k

- summarize history if long
- introduced cited_docs from SQ as those must be provided to answer generations
- limit number of docs

TODO: same for refined flow

.gitignore

@@ -7,4 +7,6 @@
 .vscode/
 *.sw?
 /backend/tests/regression/answer_quality/search_test_config.yaml
-/web/test-results/
+/web/test-results/
+backend/onyx/agent_search/main/test_data.json
+backend/tests/regression/answer_quality/test_data.json

.vscode/env_template.txt

@@ -52,3 +52,9 @@ BING_API_KEY=<REPLACE THIS>
 # Enable the full set of Danswer Enterprise Edition features
 # NOTE: DO NOT ENABLE THIS UNLESS YOU HAVE A PAID ENTERPRISE LICENSE (or if you are using this for local testing/development)
 ENABLE_PAID_ENTERPRISE_EDITION_FEATURES=False
+
+# Agent Search configs  # TODO: Remove give proper namings
+AGENT_RETRIEVAL_STATS=False   # Note: This setting will incur substantial re-ranking effort
+AGENT_RERANKING_STATS=True
+AGENT_MAX_QUERY_RETRIEVAL_RESULTS=20
+AGENT_RERANKING_MAX_QUERY_RETRIEVAL_RESULTS=20

backend/alembic/versions/1adf5ea20d2b_agent_doc_result_col.py

@@ -0,0 +1,29 @@
+"""agent_doc_result_col
+
+Revision ID: 1adf5ea20d2b
+Revises: e9cf2bd7baed
+Create Date: 2025-01-05 13:14:58.344316
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = "1adf5ea20d2b"
+down_revision = "e9cf2bd7baed"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Add the new column with JSONB type
+    op.add_column(
+        "sub_question",
+        sa.Column("sub_question_doc_results", postgresql.JSONB(), nullable=True),
+    )
+
+
+def downgrade() -> None:
+    # Drop the column
+    op.drop_column("sub_question", "sub_question_doc_results")

backend/alembic/versions/211b14ab5a91_refined_answer_improvement.py

@@ -0,0 +1,31 @@
+"""refined answer improvement
+
+Revision ID: 211b14ab5a91
+Revises: 925b58bd75b6
+Create Date: 2025-01-24 14:05:03.334309
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "211b14ab5a91"
+down_revision = "925b58bd75b6"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "chat_message",
+        sa.Column(
+            "refined_answer_improvement",
+            sa.Boolean(),
+            nullable=True,
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("chat_message", "refined_answer_improvement")

backend/alembic/versions/33ea50e88f24_foreign_key_input_prompts.py

@@ -1,80 +0,0 @@
-"""foreign key input prompts
-
-Revision ID: 33ea50e88f24
-Revises: a6df6b88ef81
-Create Date: 2025-01-29 10:54:22.141765
-
-"""
-from alembic import op
-
-
-# revision identifiers, used by Alembic.
-revision = "33ea50e88f24"
-down_revision = "a6df6b88ef81"
-branch_labels = None
-depends_on = None
-
-
-def upgrade() -> None:
-    # Safely drop constraints if exists
-    op.execute(
-        """
-        ALTER TABLE inputprompt__user
-        DROP CONSTRAINT IF EXISTS inputprompt__user_input_prompt_id_fkey
-        """
-    )
-    op.execute(
-        """
-        ALTER TABLE inputprompt__user
-        DROP CONSTRAINT IF EXISTS inputprompt__user_user_id_fkey
-        """
-    )
-
-    # Recreate with ON DELETE CASCADE
-    op.create_foreign_key(
-        "inputprompt__user_input_prompt_id_fkey",
-        "inputprompt__user",
-        "inputprompt",
-        ["input_prompt_id"],
-        ["id"],
-        ondelete="CASCADE",
-    )
-
-    op.create_foreign_key(
-        "inputprompt__user_user_id_fkey",
-        "inputprompt__user",
-        "user",
-        ["user_id"],
-        ["id"],
-        ondelete="CASCADE",
-    )
-
-
-def downgrade() -> None:
-    # Drop the new FKs with ondelete
-    op.drop_constraint(
-        "inputprompt__user_input_prompt_id_fkey",
-        "inputprompt__user",
-        type_="foreignkey",
-    )
-    op.drop_constraint(
-        "inputprompt__user_user_id_fkey",
-        "inputprompt__user",
-        type_="foreignkey",
-    )
-
-    # Recreate them without cascading
-    op.create_foreign_key(
-        "inputprompt__user_input_prompt_id_fkey",
-        "inputprompt__user",
-        "inputprompt",
-        ["input_prompt_id"],
-        ["id"],
-    )
-    op.create_foreign_key(
-        "inputprompt__user_user_id_fkey",
-        "inputprompt__user",
-        "user",
-        ["user_id"],
-        ["id"],
-    )

backend/alembic/versions/925b58bd75b6_agent_metric_col_rename__s.py

@@ -0,0 +1,35 @@
+"""agent_metric_col_rename__s
+
+Revision ID: 925b58bd75b6
+Revises: 9787be927e58
+Create Date: 2025-01-06 11:20:26.752441
+
+"""
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision = "925b58bd75b6"
+down_revision = "9787be927e58"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Rename columns using PostgreSQL syntax
+    op.alter_column(
+        "agent__search_metrics", "base_duration_s", new_column_name="base_duration__s"
+    )
+    op.alter_column(
+        "agent__search_metrics", "full_duration_s", new_column_name="full_duration__s"
+    )
+
+
+def downgrade() -> None:
+    # Revert the column renames
+    op.alter_column(
+        "agent__search_metrics", "base_duration__s", new_column_name="base_duration_s"
+    )
+    op.alter_column(
+        "agent__search_metrics", "full_duration__s", new_column_name="full_duration_s"
+    )

backend/alembic/versions/9787be927e58_agent_metric_table_renames__agent__.py

@@ -0,0 +1,25 @@
+"""agent_metric_table_renames__agent__
+
+Revision ID: 9787be927e58
+Revises: bceb76d618ec
+Create Date: 2025-01-06 11:01:44.210160
+
+"""
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision = "9787be927e58"
+down_revision = "bceb76d618ec"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Rename table from agent_search_metrics to agent__search_metrics
+    op.rename_table("agent_search_metrics", "agent__search_metrics")
+
+
+def downgrade() -> None:
+    # Rename table back from agent__search_metrics to agent_search_metrics
+    op.rename_table("agent__search_metrics", "agent_search_metrics")

backend/alembic/versions/98a5008d8711_agent_tracking.py

@@ -0,0 +1,42 @@
+"""agent_tracking
+
+Revision ID: 98a5008d8711
+Revises: 4d58345da04a
+Create Date: 2025-01-04 14:41:52.732238
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = "98a5008d8711"
+down_revision = "4d58345da04a"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "agent_search_metrics",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("user_id", postgresql.UUID(as_uuid=True), nullable=True),
+        sa.Column("persona_id", sa.Integer(), nullable=True),
+        sa.Column("agent_type", sa.String(), nullable=False),
+        sa.Column("start_time", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("base_duration_s", sa.Float(), nullable=False),
+        sa.Column("full_duration_s", sa.Float(), nullable=False),
+        sa.Column("base_metrics", postgresql.JSONB(), nullable=True),
+        sa.Column("refined_metrics", postgresql.JSONB(), nullable=True),
+        sa.Column("all_metrics", postgresql.JSONB(), nullable=True),
+        sa.ForeignKeyConstraint(
+            ["persona_id"],
+            ["persona.id"],
+        ),
+        sa.ForeignKeyConstraint(["user_id"], ["user.id"], ondelete="CASCADE"),
+        sa.PrimaryKeyConstraint("id"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("agent_search_metrics")

backend/alembic/versions/a6df6b88ef81_remove_recent_assistants.py

@@ -1,29 +0,0 @@
-"""remove recent assistants
-
-Revision ID: a6df6b88ef81
-Revises: 4d58345da04a
-Create Date: 2025-01-29 10:25:52.790407
-
-"""
-from alembic import op
-import sqlalchemy as sa
-from sqlalchemy.dialects import postgresql
-
-# revision identifiers, used by Alembic.
-revision = "a6df6b88ef81"
-down_revision = "4d58345da04a"
-branch_labels = None
-depends_on = None
-
-
-def upgrade() -> None:
-    op.drop_column("user", "recent_assistants")
-
-
-def downgrade() -> None:
-    op.add_column(
-        "user",
-        sa.Column(
-            "recent_assistants", postgresql.JSONB(), server_default="[]", nullable=False
-        ),
-    )

backend/alembic/versions/bceb76d618ec_agent_table_renames__agent__.py

@@ -0,0 +1,84 @@
+"""agent_table_renames__agent__
+
+Revision ID: bceb76d618ec
+Revises: c0132518a25b
+Create Date: 2025-01-06 10:50:48.109285
+
+"""
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision = "bceb76d618ec"
+down_revision = "c0132518a25b"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.drop_constraint(
+        "sub_query__search_doc_sub_query_id_fkey",
+        "sub_query__search_doc",
+        type_="foreignkey",
+    )
+    op.drop_constraint(
+        "sub_query__search_doc_search_doc_id_fkey",
+        "sub_query__search_doc",
+        type_="foreignkey",
+    )
+    # Rename tables
+    op.rename_table("sub_query", "agent__sub_query")
+    op.rename_table("sub_question", "agent__sub_question")
+    op.rename_table("sub_query__search_doc", "agent__sub_query__search_doc")
+
+    # Update both foreign key constraints for agent__sub_query__search_doc
+
+    # Create new foreign keys with updated names
+    op.create_foreign_key(
+        "agent__sub_query__search_doc_sub_query_id_fkey",
+        "agent__sub_query__search_doc",
+        "agent__sub_query",
+        ["sub_query_id"],
+        ["id"],
+    )
+    op.create_foreign_key(
+        "agent__sub_query__search_doc_search_doc_id_fkey",
+        "agent__sub_query__search_doc",
+        "search_doc",  # This table name doesn't change
+        ["search_doc_id"],
+        ["id"],
+    )
+
+
+def downgrade() -> None:
+    # Update foreign key constraints for sub_query__search_doc
+    op.drop_constraint(
+        "agent__sub_query__search_doc_sub_query_id_fkey",
+        "agent__sub_query__search_doc",
+        type_="foreignkey",
+    )
+    op.drop_constraint(
+        "agent__sub_query__search_doc_search_doc_id_fkey",
+        "agent__sub_query__search_doc",
+        type_="foreignkey",
+    )
+
+    # Rename tables back
+    op.rename_table("agent__sub_query__search_doc", "sub_query__search_doc")
+    op.rename_table("agent__sub_question", "sub_question")
+    op.rename_table("agent__sub_query", "sub_query")
+
+    op.create_foreign_key(
+        "sub_query__search_doc_sub_query_id_fkey",
+        "sub_query__search_doc",
+        "sub_query",
+        ["sub_query_id"],
+        ["id"],
+    )
+    op.create_foreign_key(
+        "sub_query__search_doc_search_doc_id_fkey",
+        "sub_query__search_doc",
+        "search_doc",  # This table name doesn't change
+        ["search_doc_id"],
+        ["id"],
+    )

backend/alembic/versions/c0132518a25b_agent_table_changes_rename_level.py

@@ -0,0 +1,40 @@
+"""agent_table_changes_rename_level
+
+Revision ID: c0132518a25b
+Revises: 1adf5ea20d2b
+Create Date: 2025-01-05 16:38:37.660152
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "c0132518a25b"
+down_revision = "1adf5ea20d2b"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Add level and level_question_nr columns with NOT NULL constraint
+    op.add_column(
+        "sub_question",
+        sa.Column("level", sa.Integer(), nullable=False, server_default="0"),
+    )
+    op.add_column(
+        "sub_question",
+        sa.Column(
+            "level_question_nr", sa.Integer(), nullable=False, server_default="0"
+        ),
+    )
+
+    # Remove the server_default after the columns are created
+    op.alter_column("sub_question", "level", server_default=None)
+    op.alter_column("sub_question", "level_question_nr", server_default=None)
+
+
+def downgrade() -> None:
+    # Remove the columns
+    op.drop_column("sub_question", "level_question_nr")
+    op.drop_column("sub_question", "level")

backend/alembic/versions/e9cf2bd7baed_create_pro_search_persistence_tables.py

@@ -0,0 +1,68 @@
+"""create pro search persistence tables
+
+Revision ID: e9cf2bd7baed
+Revises: 98a5008d8711
+Create Date: 2025-01-02 17:55:56.544246
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import UUID
+
+
+# revision identifiers, used by Alembic.
+revision = "e9cf2bd7baed"
+down_revision = "98a5008d8711"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Create sub_question table
+    op.create_table(
+        "sub_question",
+        sa.Column("id", sa.Integer, primary_key=True),
+        sa.Column("primary_question_id", sa.Integer, sa.ForeignKey("chat_message.id")),
+        sa.Column(
+            "chat_session_id", UUID(as_uuid=True), sa.ForeignKey("chat_session.id")
+        ),
+        sa.Column("sub_question", sa.Text),
+        sa.Column(
+            "time_created", sa.DateTime(timezone=True), server_default=sa.func.now()
+        ),
+        sa.Column("sub_answer", sa.Text),
+    )
+
+    # Create sub_query table
+    op.create_table(
+        "sub_query",
+        sa.Column("id", sa.Integer, primary_key=True),
+        sa.Column("parent_question_id", sa.Integer, sa.ForeignKey("sub_question.id")),
+        sa.Column(
+            "chat_session_id", UUID(as_uuid=True), sa.ForeignKey("chat_session.id")
+        ),
+        sa.Column("sub_query", sa.Text),
+        sa.Column(
+            "time_created", sa.DateTime(timezone=True), server_default=sa.func.now()
+        ),
+    )
+
+    # Create sub_query__search_doc association table
+    op.create_table(
+        "sub_query__search_doc",
+        sa.Column(
+            "sub_query_id", sa.Integer, sa.ForeignKey("sub_query.id"), primary_key=True
+        ),
+        sa.Column(
+            "search_doc_id",
+            sa.Integer,
+            sa.ForeignKey("search_doc.id"),
+            primary_key=True,
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("sub_query__search_doc")
+    op.drop_table("sub_query")
+    op.drop_table("sub_question")

backend/ee/onyx/server/query_and_chat/chat_backend.py

@@ -179,6 +179,7 @@ def handle_simplified_chat_message(
         chunks_below=0,
         full_doc=chat_message_req.full_doc,
         structured_response_format=chat_message_req.structured_response_format,
+        use_agentic_search=chat_message_req.use_agentic_search,
     )
 
     packets = stream_chat_message_objects(
@@ -301,6 +302,7 @@ def handle_send_message_simple_with_history(
         chunks_below=0,
         full_doc=req.full_doc,
         structured_response_format=req.structured_response_format,
+        use_agentic_search=req.use_agentic_search,
     )
 
     packets = stream_chat_message_objects(

backend/ee/onyx/server/query_and_chat/models.py

@@ -57,6 +57,9 @@ class BasicCreateChatMessageRequest(ChunkContext):
     # https://platform.openai.com/docs/guides/structured-outputs/introduction
     structured_response_format: dict | None = None
 
+    # If True, uses agentic search instead of basic search
+    use_agentic_search: bool = False
+
 
 class BasicCreateChatMessageWithHistoryRequest(ChunkContext):
     # Last element is the new query. All previous elements are historical context
@@ -71,6 +74,8 @@ class BasicCreateChatMessageWithHistoryRequest(ChunkContext):
     # only works if using an OpenAI model. See the following for more details:
     # https://platform.openai.com/docs/guides/structured-outputs/introduction
     structured_response_format: dict | None = None
+    # If True, uses agentic search instead of basic search
+    use_agentic_search: bool = False
 
 
 class SimpleDoc(BaseModel):
@@ -123,6 +128,9 @@ class OneShotQARequest(ChunkContext):
     # If True, skips generative an AI response to the search query
     skip_gen_ai_answer_generation: bool = False
 
+    # If True, uses pro search instead of basic search
+    use_agentic_search: bool = False
+
     @model_validator(mode="after")
     def check_persona_fields(self) -> "OneShotQARequest":
         if self.persona_override_config is None and self.persona_id is None:

backend/ee/onyx/server/query_and_chat/query_backend.py

@@ -196,6 +196,8 @@ def get_answer_stream(
         retrieval_details=query_request.retrieval_options,
         rerank_settings=query_request.rerank_settings,
         db_session=db_session,
+        use_agentic_search=query_request.use_agentic_search,
+        skip_gen_ai_answer_generation=query_request.skip_gen_ai_answer_generation,
     )
 
     packets = stream_chat_message_objects(

backend/onyx/agents/agent_search/basic/graph_builder.py

@@ -0,0 +1,98 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.basic.states import BasicInput
+from onyx.agents.agent_search.basic.states import BasicOutput
+from onyx.agents.agent_search.basic.states import BasicState
+from onyx.agents.agent_search.orchestration.nodes.basic_use_tool_response import (
+    basic_use_tool_response,
+)
+from onyx.agents.agent_search.orchestration.nodes.llm_tool_choice import llm_tool_choice
+from onyx.agents.agent_search.orchestration.nodes.prepare_tool_input import (
+    prepare_tool_input,
+)
+from onyx.agents.agent_search.orchestration.nodes.tool_call import tool_call
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def basic_graph_builder() -> StateGraph:
+    graph = StateGraph(
+        state_schema=BasicState,
+        input=BasicInput,
+        output=BasicOutput,
+    )
+
+    ### Add nodes ###
+
+    graph.add_node(
+        node="prepare_tool_input",
+        action=prepare_tool_input,
+    )
+
+    graph.add_node(
+        node="llm_tool_choice",
+        action=llm_tool_choice,
+    )
+
+    graph.add_node(
+        node="tool_call",
+        action=tool_call,
+    )
+
+    graph.add_node(
+        node="basic_use_tool_response",
+        action=basic_use_tool_response,
+    )
+
+    ### Add edges ###
+
+    graph.add_edge(start_key=START, end_key="prepare_tool_input")
+
+    graph.add_edge(start_key="prepare_tool_input", end_key="llm_tool_choice")
+
+    graph.add_conditional_edges("llm_tool_choice", should_continue, ["tool_call", END])
+
+    graph.add_edge(
+        start_key="tool_call",
+        end_key="basic_use_tool_response",
+    )
+
+    graph.add_edge(
+        start_key="basic_use_tool_response",
+        end_key=END,
+    )
+
+    return graph
+
+
+def should_continue(state: BasicState) -> str:
+    return (
+        # If there are no tool calls, basic graph already streamed the answer
+        END
+        if state.tool_choice is None
+        else "tool_call"
+    )
+
+
+if __name__ == "__main__":
+    from onyx.db.engine import get_session_context_manager
+    from onyx.context.search.models import SearchRequest
+    from onyx.llm.factory import get_default_llms
+    from onyx.agents.agent_search.shared_graph_utils.utils import get_test_config
+
+    graph = basic_graph_builder()
+    compiled_graph = graph.compile()
+    # TODO: unify basic input
+    input = BasicInput(logs="")
+    primary_llm, fast_llm = get_default_llms()
+    with get_session_context_manager() as db_session:
+        config, _ = get_test_config(
+            db_session=db_session,
+            primary_llm=primary_llm,
+            fast_llm=fast_llm,
+            search_request=SearchRequest(query="How does onyx use FastAPI?"),
+        )
+        compiled_graph.invoke(input, config={"metadata": {"config": config}})

backend/onyx/agents/agent_search/basic/states.py

@@ -0,0 +1,42 @@
+from typing import TypedDict
+
+from langchain_core.messages import AIMessageChunk
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.orchestration.states import ToolCallUpdate
+from onyx.agents.agent_search.orchestration.states import ToolChoiceInput
+from onyx.agents.agent_search.orchestration.states import ToolChoiceUpdate
+
+# States contain values that change over the course of graph execution,
+# Config is for values that are set at the start and never change.
+# If you are using a value from the config and realize it needs to change,
+# you should add it to the state and use/update the version in the state.
+
+## Graph Input State
+
+
+class BasicInput(BaseModel):
+    # TODO: subclass global log update state
+    logs: str = ""
+
+
+## Graph Output State
+
+
+class BasicOutput(TypedDict):
+    tool_call_chunk: AIMessageChunk
+
+
+## Update States
+
+
+## Graph State
+
+
+class BasicState(
+    BasicInput,
+    ToolChoiceInput,
+    ToolCallUpdate,
+    ToolChoiceUpdate,
+):
+    pass

backend/onyx/agents/agent_search/basic/utils.py

@@ -0,0 +1,69 @@
+from collections.abc import Iterator
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import AIMessageChunk
+from langchain_core.messages import BaseMessage
+
+from onyx.chat.models import LlmDoc
+from onyx.chat.stream_processing.answer_response_handler import AnswerResponseHandler
+from onyx.chat.stream_processing.answer_response_handler import CitationResponseHandler
+from onyx.chat.stream_processing.answer_response_handler import (
+    PassThroughAnswerResponseHandler,
+)
+from onyx.chat.stream_processing.utils import map_document_id_order
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+# TODO: handle citations here; below is what was previously passed in
+# see basic_use_tool_response.py for where these variables come from
+# answer_handler = CitationResponseHandler(
+#     context_docs=final_search_results,
+#     final_doc_id_to_rank_map=map_document_id_order(final_search_results),
+#     display_doc_id_to_rank_map=map_document_id_order(displayed_search_results),
+# )
+
+
+def process_llm_stream(
+    stream: Iterator[BaseMessage],
+    should_stream_answer: bool,
+    final_search_results: list[LlmDoc] | None = None,
+    displayed_search_results: list[LlmDoc] | None = None,
+) -> AIMessageChunk:
+    tool_call_chunk = AIMessageChunk(content="")
+    # for response in response_handler_manager.handle_llm_response(stream):
+
+    if final_search_results and displayed_search_results:
+        answer_handler: AnswerResponseHandler = CitationResponseHandler(
+            context_docs=final_search_results,
+            final_doc_id_to_rank_map=map_document_id_order(final_search_results),
+            display_doc_id_to_rank_map=map_document_id_order(displayed_search_results),
+        )
+    else:
+        answer_handler = PassThroughAnswerResponseHandler()
+
+    full_answer = ""
+    # This stream will be the llm answer if no tool is chosen. When a tool is chosen,
+    # the stream will contain AIMessageChunks with tool call information.
+    for response in stream:
+        answer_piece = response.content
+        if not isinstance(answer_piece, str):
+            # TODO: handle non-string content
+            logger.warning(f"Received non-string content: {type(answer_piece)}")
+            answer_piece = str(answer_piece)
+        full_answer += answer_piece
+
+        if isinstance(response, AIMessageChunk) and (
+            response.tool_call_chunks or response.tool_calls
+        ):
+            tool_call_chunk += response  # type: ignore
+        elif should_stream_answer:
+            for response_part in answer_handler.handle_response_part(response, []):
+                dispatch_custom_event(
+                    "basic_response",
+                    response_part,
+                )
+
+    logger.info(f"Full answer: {full_answer}")
+    return cast(AIMessageChunk, tool_call_chunk)

backend/onyx/agents/agent_search/core_state.py

@@ -0,0 +1,21 @@
+from operator import add
+from typing import Annotated
+
+from pydantic import BaseModel
+
+
+class CoreState(BaseModel):
+    """
+    This is the core state that is shared across all subgraphs.
+    """
+
+    base_question: str = ""
+    log_messages: Annotated[list[str], add] = []
+
+
+class SubgraphCoreState(BaseModel):
+    """
+    This is the core state that is shared across all subgraphs.
+    """
+
+    log_messages: Annotated[list[str], add]

backend/onyx/agents/agent_search/db_operations.py

@@ -0,0 +1,66 @@
+from uuid import UUID
+
+from sqlalchemy.orm import Session
+
+from onyx.db.models import AgentSubQuery
+from onyx.db.models import AgentSubQuestion
+
+
+def create_sub_question(
+    db_session: Session,
+    chat_session_id: UUID,
+    primary_message_id: int,
+    sub_question: str,
+    sub_answer: str,
+) -> AgentSubQuestion:
+    """Create a new sub-question record in the database."""
+    sub_q = AgentSubQuestion(
+        chat_session_id=chat_session_id,
+        primary_question_id=primary_message_id,
+        sub_question=sub_question,
+        sub_answer=sub_answer,
+    )
+    db_session.add(sub_q)
+    db_session.flush()
+    return sub_q
+
+
+def create_sub_query(
+    db_session: Session,
+    chat_session_id: UUID,
+    parent_question_id: int,
+    sub_query: str,
+) -> AgentSubQuery:
+    """Create a new sub-query record in the database."""
+    sub_q = AgentSubQuery(
+        chat_session_id=chat_session_id,
+        parent_question_id=parent_question_id,
+        sub_query=sub_query,
+    )
+    db_session.add(sub_q)
+    db_session.flush()
+    return sub_q
+
+
+def get_sub_questions_for_message(
+    db_session: Session,
+    primary_message_id: int,
+) -> list[AgentSubQuestion]:
+    """Get all sub-questions for a given primary message."""
+    return (
+        db_session.query(AgentSubQuestion)
+        .filter(AgentSubQuestion.primary_question_id == primary_message_id)
+        .all()
+    )
+
+
+def get_sub_queries_for_question(
+    db_session: Session,
+    sub_question_id: int,
+) -> list[AgentSubQuery]:
+    """Get all sub-queries for a given sub-question."""
+    return (
+        db_session.query(AgentSubQuery)
+        .filter(AgentSubQuery.parent_question_id == sub_question_id)
+        .all()
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__consolidate_sub_answers__subgraph/edges.py

@@ -0,0 +1,55 @@
+from collections.abc import Hashable
+from datetime import datetime
+
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import make_question_id
+
+
+def parallelize_initial_sub_question_answering(
+    state: SearchSQState,
+) -> list[Send | Hashable]:
+    now_start = datetime.now()
+    if len(state.initial_decomp_questions) > 0:
+        # sub_question_record_ids = [subq_record.id for subq_record in state["sub_question_records"]]
+        # if len(state["sub_question_records"]) == 0:
+        #     if state["config"].use_persistence:
+        #         raise ValueError("No sub-questions found for initial decompozed questions")
+        #     else:
+        #         # in this case, we are doing retrieval on the original question.
+        #         # to make all the logic consistent, we create a new sub-question
+        #         # with the same content as the original question
+        #         sub_question_record_ids = [1] * len(state["initial_decomp_questions"])
+
+        return [
+            Send(
+                "answer_query_subgraph",
+                AnswerQuestionInput(
+                    question=question,
+                    question_id=make_question_id(0, question_nr + 1),
+                    log_messages=[
+                        f"{now_start} -- Main Edge - Parallelize Initial Sub-question Answering"
+                    ],
+                ),
+            )
+            for question_nr, question in enumerate(state.initial_decomp_questions)
+        ]
+
+    else:
+        return [
+            Send(
+                "ingest_answers",
+                AnswerQuestionOutput(
+                    answer_results=[],
+                ),
+            )
+        ]

backend/onyx/agents/agent_search/deep_search_a/initial__consolidate_sub_answers__subgraph/graph_builder.py

@@ -0,0 +1,100 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.initial__consolidate_sub_answers__subgraph.edges import (
+    parallelize_initial_sub_question_answering,
+)
+from onyx.agents.agent_search.deep_search_a.initial__consolidate_sub_answers__subgraph.nodes.ingest_initial_sub_answers import (
+    ingest_initial_sub_answers,
+)
+from onyx.agents.agent_search.deep_search_a.initial__consolidate_sub_answers__subgraph.nodes.initial_decomposition import (
+    initial_sub_question_creation,
+)
+from onyx.agents.agent_search.deep_search_a.initial__consolidate_sub_answers__subgraph.states import (
+    SQInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__consolidate_sub_answers__subgraph.states import (
+    SQState,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.graph_builder import (
+    answer_query_graph_builder,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+test_mode = False
+
+
+def initial_sq_subgraph_builder(test_mode: bool = False) -> StateGraph:
+    graph = StateGraph(
+        state_schema=SQState,
+        input=SQInput,
+    )
+
+    graph.add_node(
+        node="initial_sub_question_creation",
+        action=initial_sub_question_creation,
+    )
+    answer_query_subgraph = answer_query_graph_builder().compile()
+    graph.add_node(
+        node="answer_query_subgraph",
+        action=answer_query_subgraph,
+    )
+
+    graph.add_node(
+        node="ingest_initial_sub_question_answers",
+        action=ingest_initial_sub_answers,
+    )
+
+    ### Add edges ###
+
+    # raph.add_edge(start_key=START, end_key="base_raw_search_subgraph")
+
+    # graph.add_edge(
+    #     start_key="agent_search_start",
+    #     end_key="entity_term_extraction_llm",
+    # )
+
+    graph.add_edge(
+        start_key=START,
+        end_key="initial_sub_question_creation",
+    )
+
+    # graph.add_edge(
+    #     start_key="LLM",
+    #     end_key=END,
+    # )
+
+    # graph.add_edge(
+    #     start_key=START,
+    #     end_key="initial_sub_question_creation",
+    # )
+
+    graph.add_conditional_edges(
+        source="initial_sub_question_creation",
+        path=parallelize_initial_sub_question_answering,
+        path_map=["answer_query_subgraph"],
+    )
+    graph.add_edge(
+        start_key="answer_query_subgraph",
+        end_key="ingest_initial_sub_question_answers",
+    )
+
+    graph.add_edge(
+        start_key="ingest_initial_sub_question_answers",
+        end_key=END,
+    )
+
+    # graph.add_edge(
+    #     start_key="generate_refined_answer",
+    #     end_key="check_refined_answer",
+    # )
+
+    # graph.add_edge(
+    #     start_key="check_refined_answer",
+    #     end_key=END,
+    # )
+
+    return graph

backend/onyx/agents/agent_search/deep_search_a/initial__consolidate_sub_answers__subgraph/nodes/ingest_initial_sub_answers.py

@@ -0,0 +1,45 @@
+from datetime import datetime
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    DecompAnswersUpdate,
+)
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+
+
+def ingest_initial_sub_answers(
+    state: AnswerQuestionOutput,
+) -> DecompAnswersUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------INGEST ANSWERS---")
+    documents = []
+    context_documents = []
+    cited_docs = []
+    answer_results = state.answer_results if hasattr(state, "answer_results") else []
+    for answer_result in answer_results:
+        documents.extend(answer_result.documents)
+        context_documents.extend(answer_result.context_documents)
+        cited_docs.extend(answer_result.cited_docs)
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INGEST ANSWERS END---"
+    )
+
+    return DecompAnswersUpdate(
+        # Deduping is done by the documents operator for the main graph
+        # so we might not need to dedup here
+        documents=dedup_inference_sections(documents, []),
+        context_documents=dedup_inference_sections(context_documents, []),
+        cited_docs=dedup_inference_sections(cited_docs, []),
+        decomp_answer_results=answer_results,
+        log_messages=[
+            f"{now_start} -- Main - Ingest initial processed sub questions,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__consolidate_sub_answers__subgraph/nodes/initial_decomposition.py

@@ -0,0 +1,138 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_content
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    AgentRefinedMetrics,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import (
+    dispatch_subquestion,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import BaseDecompUpdate
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    build_history_prompt,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    INITIAL_DECOMPOSITION_PROMPT_QUESTIONS,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    INITIAL_DECOMPOSITION_PROMPT_QUESTIONS_AFTER_SEARCH,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import dispatch_separated
+from onyx.chat.models import StreamStopInfo
+from onyx.chat.models import StreamStopReason
+from onyx.chat.models import SubQuestionPiece
+from onyx.configs.agent_configs import AGENT_NUM_DOCS_FOR_DECOMPOSITION
+
+
+def initial_sub_question_creation(
+    state: SearchSQState, config: RunnableConfig
+) -> BaseDecompUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------BASE DECOMP START---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    chat_session_id = agent_a_config.chat_session_id
+    primary_message_id = agent_a_config.message_id
+    perform_initial_search_decomposition = (
+        agent_a_config.perform_initial_search_decomposition
+    )
+    # Get the rewritten queries in a defined format
+    model = agent_a_config.fast_llm
+
+    history = build_history_prompt(agent_a_config, question)
+
+    # Use the initial search results to inform the decomposition
+    sample_doc_str = state.sample_doc_str if hasattr(state, "sample_doc_str") else ""
+
+    if not chat_session_id or not primary_message_id:
+        raise ValueError(
+            "chat_session_id and message_id must be provided for agent search"
+        )
+    agent_start_time = datetime.now()
+
+    # Initial search to inform decomposition. Just get top 3 fits
+
+    if perform_initial_search_decomposition:
+        sample_doc_str = "\n\n".join(
+            [
+                doc.combined_content
+                for doc in state.exploratory_search_results[
+                    :AGENT_NUM_DOCS_FOR_DECOMPOSITION
+                ]
+            ]
+        )
+
+        decomposition_prompt = (
+            INITIAL_DECOMPOSITION_PROMPT_QUESTIONS_AFTER_SEARCH.format(
+                question=question, sample_doc_str=sample_doc_str, history=history
+            )
+        )
+
+    else:
+        decomposition_prompt = INITIAL_DECOMPOSITION_PROMPT_QUESTIONS.format(
+            question=question, history=history
+        )
+
+    # Start decomposition
+
+    msg = [HumanMessage(content=decomposition_prompt)]
+
+    # Send the initial question as a subquestion with number 0
+    dispatch_custom_event(
+        "decomp_qs",
+        SubQuestionPiece(
+            sub_question=question,
+            level=0,
+            level_question_nr=0,
+        ),
+    )
+    # dispatches custom events for subquestion tokens, adding in subquestion ids.
+    streamed_tokens = dispatch_separated(model.stream(msg), dispatch_subquestion(0))
+
+    stop_event = StreamStopInfo(
+        stop_reason=StreamStopReason.FINISHED,
+        stream_type="sub_questions",
+        level=0,
+    )
+    dispatch_custom_event("stream_finished", stop_event)
+
+    deomposition_response = merge_content(*streamed_tokens)
+
+    # this call should only return strings. Commenting out for efficiency
+    # assert [type(tok) == str for tok in streamed_tokens]
+
+    # use no-op cast() instead of str() which runs code
+    # list_of_subquestions = clean_and_parse_list_string(cast(str, response))
+    list_of_subqs = cast(str, deomposition_response).split("\n")
+
+    decomp_list: list[str] = [sq.strip() for sq in list_of_subqs if sq.strip() != ""]
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- INITIAL SUBQUESTION ANSWERING - Base Decomposition,  Time taken: {now_end - now_start}"
+    )
+
+    return BaseDecompUpdate(
+        initial_decomp_questions=decomp_list,
+        agent_start_time=agent_start_time,
+        agent_refined_start_time=None,
+        agent_refined_end_time=None,
+        agent_refined_metrics=AgentRefinedMetrics(
+            refined_doc_boost_factor=None,
+            refined_question_boost_factor=None,
+            duration__s=None,
+        ),
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__consolidate_sub_answers__subgraph/states.py

@@ -0,0 +1,37 @@
+from typing import TypedDict
+
+from onyx.agents.agent_search.core_state import CoreState
+from onyx.agents.agent_search.deep_search_a.main__graph.states import BaseDecompUpdate
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    DecompAnswersUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerUpdate,
+)
+
+### States ###
+
+
+class SQInput(CoreState):
+    pass
+
+
+## Graph State
+
+
+class SQState(
+    # This includes the core state
+    SQInput,
+    BaseDecompUpdate,
+    InitialAnswerUpdate,
+    DecompAnswersUpdate,
+):
+    # expanded_retrieval_result: Annotated[list[ExpandedRetrievalResult], add]
+    pass
+
+
+## Graph Output State - presently not used
+
+
+class SQOutput(TypedDict):
+    log_messages: list[str]

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/edges.py

@@ -0,0 +1,29 @@
+from collections.abc import Hashable
+from datetime import datetime
+
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalInput,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def send_to_expanded_retrieval(state: AnswerQuestionInput) -> Send | Hashable:
+    logger.debug("sending to expanded retrieval via edge")
+    now_start = datetime.now()
+
+    return Send(
+        "initial_sub_question_expanded_retrieval",
+        ExpandedRetrievalInput(
+            question=state.question,
+            base_search=False,
+            sub_question_id=state.question_id,
+            log_messages=[f"{now_start} -- Sending to expanded retrieval"],
+        ),
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/graph_builder.py

@@ -0,0 +1,126 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.edges import (
+    send_to_expanded_retrieval,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.answer_check import (
+    answer_check,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.answer_generation import (
+    answer_generation,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.format_answer import (
+    format_answer,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.ingest_retrieval import (
+    ingest_retrieval,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionState,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.graph_builder import (
+    expanded_retrieval_graph_builder,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import get_test_config
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def answer_query_graph_builder() -> StateGraph:
+    graph = StateGraph(
+        state_schema=AnswerQuestionState,
+        input=AnswerQuestionInput,
+        output=AnswerQuestionOutput,
+    )
+
+    ### Add nodes ###
+
+    expanded_retrieval = expanded_retrieval_graph_builder().compile()
+    graph.add_node(
+        node="initial_sub_question_expanded_retrieval",
+        action=expanded_retrieval,
+    )
+    graph.add_node(
+        node="answer_check",
+        action=answer_check,
+    )
+    graph.add_node(
+        node="answer_generation",
+        action=answer_generation,
+    )
+    graph.add_node(
+        node="format_answer",
+        action=format_answer,
+    )
+    graph.add_node(
+        node="ingest_retrieval",
+        action=ingest_retrieval,
+    )
+
+    ### Add edges ###
+
+    graph.add_conditional_edges(
+        source=START,
+        path=send_to_expanded_retrieval,
+        path_map=["initial_sub_question_expanded_retrieval"],
+    )
+    graph.add_edge(
+        start_key="initial_sub_question_expanded_retrieval",
+        end_key="ingest_retrieval",
+    )
+    graph.add_edge(
+        start_key="ingest_retrieval",
+        end_key="answer_generation",
+    )
+    graph.add_edge(
+        start_key="answer_generation",
+        end_key="answer_check",
+    )
+    graph.add_edge(
+        start_key="answer_check",
+        end_key="format_answer",
+    )
+    graph.add_edge(
+        start_key="format_answer",
+        end_key=END,
+    )
+
+    return graph
+
+
+if __name__ == "__main__":
+    from onyx.db.engine import get_session_context_manager
+    from onyx.llm.factory import get_default_llms
+    from onyx.context.search.models import SearchRequest
+
+    graph = answer_query_graph_builder()
+    compiled_graph = graph.compile()
+    primary_llm, fast_llm = get_default_llms()
+    search_request = SearchRequest(
+        query="what can you do with onyx or danswer?",
+    )
+    with get_session_context_manager() as db_session:
+        agent_search_config, search_tool = get_test_config(
+            db_session, primary_llm, fast_llm, search_request
+        )
+        inputs = AnswerQuestionInput(
+            question="what can you do with onyx?",
+            question_id="0_0",
+            log_messages=[],
+        )
+        for thing in compiled_graph.stream(
+            input=inputs,
+            config={"configurable": {"config": agent_search_config}},
+            # debug=True,
+            # subgraphs=True,
+        ):
+            logger.debug(thing)

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/models.py

@@ -0,0 +1,8 @@
+from pydantic import BaseModel
+
+
+### Models ###
+
+
+class AnswerRetrievalStats(BaseModel):
+    answer_retrieval_stats: dict[str, float | int]

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/nodes/answer_check.py

@@ -0,0 +1,59 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_message_runs
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionState,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    QACheckUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.prompts import SUB_CHECK_NO
+from onyx.agents.agent_search.shared_graph_utils.prompts import SUB_CHECK_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.prompts import UNKNOWN_ANSWER
+from onyx.agents.agent_search.shared_graph_utils.utils import parse_question_id
+
+
+def answer_check(state: AnswerQuestionState, config: RunnableConfig) -> QACheckUpdate:
+    now_start = datetime.now()
+
+    level, question_num = parse_question_id(state.question_id)
+    if state.answer == UNKNOWN_ANSWER:
+        now_end = datetime.now()
+        return QACheckUpdate(
+            answer_quality=SUB_CHECK_NO,
+            log_messages=[
+                f"{now_start} -- Answer check SQ-{level}-{question_num} - unknown answer,  Time taken: {now_end - now_start}"
+            ],
+        )
+    msg = [
+        HumanMessage(
+            content=SUB_CHECK_PROMPT.format(
+                question=state.question,
+                base_answer=state.answer,
+            )
+        )
+    ]
+
+    agent_searchch_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    fast_llm = agent_searchch_config.fast_llm
+    response = list(
+        fast_llm.stream(
+            prompt=msg,
+        )
+    )
+
+    quality_str = merge_message_runs(response, chunk_separator="")[0].content
+
+    now_end = datetime.now()
+    return QACheckUpdate(
+        answer_quality=quality_str,
+        log_messages=[
+            f"""{now_start} -- Answer check SQ-{level}-{question_num} - Answer quality: {quality_str},
+ Time taken: {now_end - now_start}"""
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/nodes/answer_generation.py

@@ -0,0 +1,126 @@
+from datetime import datetime
+from typing import Any
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import merge_message_runs
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionState,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    QAGenerationUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    build_sub_question_answer_prompt,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import NO_RECOVERED_DOCS
+from onyx.agents.agent_search.shared_graph_utils.utils import get_answer_citation_ids
+from onyx.agents.agent_search.shared_graph_utils.utils import (
+    get_persona_agent_prompt_expressions,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import parse_question_id
+from onyx.chat.models import AgentAnswerPiece
+from onyx.chat.models import StreamStopInfo
+from onyx.chat.models import StreamStopReason
+from onyx.configs.agent_configs import AGENT_MAX_ANSWER_CONTEXT_DOCS
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def answer_generation(
+    state: AnswerQuestionState, config: RunnableConfig
+) -> QAGenerationUpdate:
+    now_start = datetime.now()
+    logger.info(f"--------{now_start}--------START ANSWER GENERATION---")
+
+    agent_search_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = state.question
+    state.documents
+    level, question_nr = parse_question_id(state.question_id)
+    context_docs = state.context_documents[:AGENT_MAX_ANSWER_CONTEXT_DOCS]
+    persona_contextualized_prompt = get_persona_agent_prompt_expressions(
+        agent_search_config.search_request.persona
+    ).contextualized_prompt
+
+    if len(context_docs) == 0:
+        answer_str = NO_RECOVERED_DOCS
+        dispatch_custom_event(
+            "sub_answers",
+            AgentAnswerPiece(
+                answer_piece=answer_str,
+                level=level,
+                level_question_nr=question_nr,
+                answer_type="agent_sub_answer",
+            ),
+        )
+    else:
+        logger.debug(f"Number of verified retrieval docs: {len(context_docs)}")
+
+        fast_llm = agent_search_config.fast_llm
+        msg = build_sub_question_answer_prompt(
+            question=question,
+            original_question=agent_search_config.search_request.query,
+            docs=context_docs,
+            persona_specification=persona_contextualized_prompt,
+            config=fast_llm.config,
+        )
+
+        response: list[str | list[str | dict[str, Any]]] = []
+        dispatch_timings: list[float] = []
+        for message in fast_llm.stream(
+            prompt=msg,
+        ):
+            # TODO: in principle, the answer here COULD contain images, but we don't support that yet
+            content = message.content
+            if not isinstance(content, str):
+                raise ValueError(
+                    f"Expected content to be a string, but got {type(content)}"
+                )
+            start_stream_token = datetime.now()
+            dispatch_custom_event(
+                "sub_answers",
+                AgentAnswerPiece(
+                    answer_piece=content,
+                    level=level,
+                    level_question_nr=question_nr,
+                    answer_type="agent_sub_answer",
+                ),
+            )
+            end_stream_token = datetime.now()
+            dispatch_timings.append(
+                (end_stream_token - start_stream_token).microseconds
+            )
+            response.append(content)
+
+        answer_str = merge_message_runs(response, chunk_separator="")[0].content
+        logger.info(
+            f"Average dispatch time: {sum(dispatch_timings) / len(dispatch_timings)}"
+        )
+
+    answer_citation_ids = get_answer_citation_ids(answer_str)
+    cited_docs = [context_docs[id] for id in answer_citation_ids]
+
+    stop_event = StreamStopInfo(
+        stop_reason=StreamStopReason.FINISHED,
+        stream_type="sub_answer",
+        level=level,
+        level_question_nr=question_nr,
+    )
+    dispatch_custom_event("stream_finished", stop_event)
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- Answer generation SQ-{level} - Q{question_nr} - Time taken: {now_end - now_start}"
+    )
+    return QAGenerationUpdate(
+        answer=answer_str,
+        cited_docs=cited_docs,
+        log_messages=[
+            f"{now_start} -- Answer generation SQ-{level} - Q{question_nr} - Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/nodes/format_answer.py

@@ -0,0 +1,29 @@
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionState,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    QuestionAnswerResults,
+)
+
+
+def format_answer(state: AnswerQuestionState) -> AnswerQuestionOutput:
+    return AnswerQuestionOutput(
+        answer_results=[
+            QuestionAnswerResults(
+                question=state.question,
+                question_id=state.question_id,
+                quality=state.answer_quality
+                if hasattr(state, "answer_quality")
+                else "No",
+                answer=state.answer,
+                expanded_retrieval_results=state.expanded_retrieval_results,
+                documents=state.documents,
+                context_documents=state.context_documents,
+                cited_docs=state.cited_docs,
+                sub_question_retrieval_stats=state.sub_question_retrieval_stats,
+            )
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/nodes/ingest_retrieval.py

@@ -0,0 +1,22 @@
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    RetrievalIngestionUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalOutput,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+
+
+def ingest_retrieval(state: ExpandedRetrievalOutput) -> RetrievalIngestionUpdate:
+    sub_question_retrieval_stats = (
+        state.expanded_retrieval_result.sub_question_retrieval_stats
+    )
+    if sub_question_retrieval_stats is None:
+        sub_question_retrieval_stats = [AgentChunkStats()]
+
+    return RetrievalIngestionUpdate(
+        expanded_retrieval_results=state.expanded_retrieval_result.expanded_queries_results,
+        documents=state.expanded_retrieval_result.reranked_documents,
+        context_documents=state.expanded_retrieval_result.context_documents,
+        sub_question_retrieval_stats=sub_question_retrieval_stats,
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__individual_sub_answer__subgraph/states.py

@@ -0,0 +1,72 @@
+from operator import add
+from typing import Annotated
+
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.core_state import SubgraphCoreState
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    QuestionAnswerResults,
+)
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+from onyx.context.search.models import InferenceSection
+
+
+## Update States
+class QACheckUpdate(BaseModel):
+    answer_quality: str = ""
+    log_messages: list[str] = []
+
+
+class QAGenerationUpdate(BaseModel):
+    answer: str = ""
+    log_messages: list[str] = []
+    cited_docs: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    # answer_stat: AnswerStats
+
+
+class RetrievalIngestionUpdate(BaseModel):
+    expanded_retrieval_results: list[QueryResult] = []
+    documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    context_documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    sub_question_retrieval_stats: AgentChunkStats = AgentChunkStats()
+
+
+## Graph Input State
+
+
+class AnswerQuestionInput(SubgraphCoreState):
+    question: str = ""
+    question_id: str = (
+        ""  # 0_0 is original question, everything else is <level>_<question_num>.
+    )
+    # level 0 is original question and first decomposition, level 1 is follow up, etc
+    # question_num is a unique number per original question per level.
+
+
+## Graph State
+
+
+class AnswerQuestionState(
+    AnswerQuestionInput,
+    QAGenerationUpdate,
+    QACheckUpdate,
+    RetrievalIngestionUpdate,
+):
+    pass
+
+
+## Graph Output State
+
+
+class AnswerQuestionOutput(BaseModel):
+    """
+    This is a list of results even though each call of this subgraph only returns one result.
+    This is because if we parallelize the answer query subgraph, there will be multiple
+      results in a list so the add operator is used to add them together.
+    """
+
+    answer_results: Annotated[list[QuestionAnswerResults], add] = []

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval__subgraph/graph_builder.py

@@ -0,0 +1,89 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.nodes.format_raw_search_results import (
+    format_raw_search_results,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.nodes.generate_raw_search_data import (
+    generate_raw_search_data,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.nodes.ingest_initial_base_retrieval import (
+    ingest_initial_base_retrieval,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.states import (
+    BaseRawSearchInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.states import (
+    BaseRawSearchOutput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.states import (
+    BaseRawSearchState,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.graph_builder import (
+    expanded_retrieval_graph_builder,
+)
+
+
+def base_raw_search_graph_builder() -> StateGraph:
+    graph = StateGraph(
+        state_schema=BaseRawSearchState,
+        input=BaseRawSearchInput,
+        output=BaseRawSearchOutput,
+    )
+
+    ### Add nodes ###
+
+    graph.add_node(
+        node="generate_raw_search_data",
+        action=generate_raw_search_data,
+    )
+
+    expanded_retrieval = expanded_retrieval_graph_builder().compile()
+    graph.add_node(
+        node="expanded_retrieval_base_search",
+        action=expanded_retrieval,
+    )
+    graph.add_node(
+        node="format_raw_search_results",
+        action=format_raw_search_results,
+    )
+
+    graph.add_node(
+        node="ingest_initial_base_retrieval",
+        action=ingest_initial_base_retrieval,
+    )
+
+    ### Add edges ###
+
+    graph.add_edge(start_key=START, end_key="generate_raw_search_data")
+
+    graph.add_edge(
+        start_key="generate_raw_search_data",
+        end_key="expanded_retrieval_base_search",
+    )
+    graph.add_edge(
+        start_key="expanded_retrieval_base_search",
+        end_key="format_raw_search_results",
+    )
+
+    # graph.add_edge(
+    #     start_key="expanded_retrieval_base_search",
+    #     end_key=END,
+    # )
+
+    graph.add_edge(
+        start_key="format_raw_search_results",
+        end_key="ingest_initial_base_retrieval",
+    )
+
+    graph.add_edge(
+        start_key="ingest_initial_base_retrieval",
+        end_key=END,
+    )
+
+    return graph
+
+
+if __name__ == "__main__":
+    pass

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval__subgraph/models.py

@@ -0,0 +1,20 @@
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.context.search.models import InferenceSection
+
+### Models ###
+
+
+class AnswerRetrievalStats(BaseModel):
+    answer_retrieval_stats: dict[str, float | int]
+
+
+class QuestionAnswerResults(BaseModel):
+    question: str
+    answer: str
+    quality: str
+    expanded_retrieval_results: list[QueryResult]
+    documents: list[InferenceSection]
+    sub_question_retrieval_stats: list[AgentChunkStats]

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval__subgraph/nodes/format_raw_search_results.py

@@ -0,0 +1,18 @@
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.states import (
+    BaseRawSearchOutput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalOutput,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def format_raw_search_results(state: ExpandedRetrievalOutput) -> BaseRawSearchOutput:
+    logger.debug("format_raw_search_results")
+    return BaseRawSearchOutput(
+        base_expanded_retrieval_result=state.expanded_retrieval_result,
+        # base_retrieval_results=[state.expanded_retrieval_result],
+        # base_search_documents=[],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval__subgraph/nodes/generate_raw_search_data.py

@@ -0,0 +1,25 @@
+from typing import cast
+
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.core_state import CoreState
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalInput,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def generate_raw_search_data(
+    state: CoreState, config: RunnableConfig
+) -> ExpandedRetrievalInput:
+    logger.debug("generate_raw_search_data")
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    return ExpandedRetrievalInput(
+        question=agent_a_config.search_request.query,
+        base_search=True,
+        sub_question_id=None,  # This graph is always and only used for the original question
+        log_messages=[],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval__subgraph/nodes/ingest_initial_base_retrieval.py

@@ -0,0 +1,41 @@
+from datetime import datetime
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.states import (
+    BaseRawSearchOutput,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    ExpandedRetrievalUpdate,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+
+
+def ingest_initial_base_retrieval(
+    state: BaseRawSearchOutput,
+) -> ExpandedRetrievalUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------INGEST INITIAL RETRIEVAL---")
+
+    sub_question_retrieval_stats = (
+        state.base_expanded_retrieval_result.sub_question_retrieval_stats
+    )
+    if sub_question_retrieval_stats is None:
+        sub_question_retrieval_stats = AgentChunkStats()
+    else:
+        sub_question_retrieval_stats = sub_question_retrieval_stats
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INGEST INITIAL RETRIEVAL END---"
+    )
+
+    return ExpandedRetrievalUpdate(
+        original_question_retrieval_results=state.base_expanded_retrieval_result.expanded_queries_results,
+        all_original_question_documents=state.base_expanded_retrieval_result.context_documents,
+        original_question_retrieval_stats=sub_question_retrieval_stats,
+        log_messages=[
+            f"{now_start} -- Main - Ingestion base retrieval,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval__subgraph/states.py

@@ -0,0 +1,44 @@
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    ExpandedRetrievalUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.models import (
+    ExpandedRetrievalResult,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalInput,
+)
+
+## Update States
+
+
+## Graph Input State
+
+
+class BaseRawSearchInput(ExpandedRetrievalInput):
+    pass
+
+
+## Graph Output State
+
+
+class BaseRawSearchOutput(BaseModel):
+    """
+    This is a list of results even though each call of this subgraph only returns one result.
+    This is because if we parallelize the answer query subgraph, there will be multiple
+      results in a list so the add operator is used to add them together.
+    """
+
+    # base_search_documents: Annotated[list[InferenceSection], dedup_inference_sections]
+    # base_retrieval_results: Annotated[list[ExpandedRetrievalResult], add]
+    base_expanded_retrieval_result: ExpandedRetrievalResult = ExpandedRetrievalResult()
+
+
+## Graph State
+
+
+class BaseRawSearchState(
+    BaseRawSearchInput, BaseRawSearchOutput, ExpandedRetrievalUpdate
+):
+    pass

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/edges.py

@@ -0,0 +1,55 @@
+from collections.abc import Hashable
+from datetime import datetime
+
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import make_question_id
+
+
+def parallelize_initial_sub_question_answering(
+    state: SearchSQState,
+) -> list[Send | Hashable]:
+    now_start = datetime.now()
+    if len(state.initial_decomp_questions) > 0:
+        # sub_question_record_ids = [subq_record.id for subq_record in state["sub_question_records"]]
+        # if len(state["sub_question_records"]) == 0:
+        #     if state["config"].use_persistence:
+        #         raise ValueError("No sub-questions found for initial decompozed questions")
+        #     else:
+        #         # in this case, we are doing retrieval on the original question.
+        #         # to make all the logic consistent, we create a new sub-question
+        #         # with the same content as the original question
+        #         sub_question_record_ids = [1] * len(state["initial_decomp_questions"])
+
+        return [
+            Send(
+                "answer_query_subgraph",
+                AnswerQuestionInput(
+                    question=question,
+                    question_id=make_question_id(0, question_nr + 1),
+                    log_messages=[
+                        f"{now_start} -- Main Edge - Parallelize Initial Sub-question Answering"
+                    ],
+                ),
+            )
+            for question_nr, question in enumerate(state.initial_decomp_questions)
+        ]
+
+    else:
+        return [
+            Send(
+                "ingest_answers",
+                AnswerQuestionOutput(
+                    answer_results=[],
+                ),
+            )
+        ]

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/graph_builder.py

@@ -0,0 +1,139 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.initial__consolidate_sub_answers__subgraph.graph_builder import (
+    initial_sq_subgraph_builder,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.graph_builder import (
+    base_raw_search_graph_builder,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.nodes.generate_initial_answer import (
+    generate_initial_answer,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.nodes.initial_answer_quality_check import (
+    initial_answer_quality_check,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.nodes.retrieval_consolidation import (
+    retrieval_consolidation,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def initial_search_sq_subgraph_builder(test_mode: bool = False) -> StateGraph:
+    graph = StateGraph(
+        state_schema=SearchSQState,
+        input=SearchSQInput,
+    )
+
+    # graph.add_node(
+    #     node="initial_sub_question_creation",
+    #     action=initial_sub_question_creation,
+    # )
+
+    sub_question_answering_subgraph = initial_sq_subgraph_builder().compile()
+    graph.add_node(
+        node="sub_question_answering_subgraph",
+        action=sub_question_answering_subgraph,
+    )
+
+    # answer_query_subgraph = answer_query_graph_builder().compile()
+    # graph.add_node(
+    #     node="answer_query_subgraph",
+    #     action=answer_query_subgraph,
+    # )
+
+    base_raw_search_subgraph = base_raw_search_graph_builder().compile()
+    graph.add_node(
+        node="base_raw_search_subgraph",
+        action=base_raw_search_subgraph,
+    )
+
+    graph.add_node(
+        node="retrieval_consolidation",
+        action=retrieval_consolidation,
+    )
+
+    graph.add_node(
+        node="generate_initial_answer",
+        action=generate_initial_answer,
+    )
+
+    graph.add_node(
+        node="initial_answer_quality_check",
+        action=initial_answer_quality_check,
+    )
+
+    ### Add edges ###
+
+    # raph.add_edge(start_key=START, end_key="base_raw_search_subgraph")
+
+    graph.add_edge(
+        start_key=START,
+        end_key="base_raw_search_subgraph",
+    )
+
+    # graph.add_edge(
+    #     start_key="agent_search_start",
+    #     end_key="entity_term_extraction_llm",
+    # )
+
+    graph.add_edge(
+        start_key=START,
+        end_key="sub_question_answering_subgraph",
+    )
+
+    graph.add_edge(
+        start_key=["base_raw_search_subgraph", "sub_question_answering_subgraph"],
+        end_key="retrieval_consolidation",
+    )
+
+    graph.add_edge(
+        start_key="retrieval_consolidation",
+        end_key="generate_initial_answer",
+    )
+
+    # graph.add_edge(
+    #     start_key="LLM",
+    #     end_key=END,
+    # )
+
+    # graph.add_edge(
+    #     start_key=START,
+    #     end_key="initial_sub_question_creation",
+    # )
+
+    graph.add_edge(
+        start_key="retrieval_consolidation",
+        end_key="generate_initial_answer",
+    )
+
+    graph.add_edge(
+        start_key="generate_initial_answer",
+        end_key="initial_answer_quality_check",
+    )
+
+    graph.add_edge(
+        start_key="initial_answer_quality_check",
+        end_key=END,
+    )
+
+    # graph.add_edge(
+    #     start_key="generate_refined_answer",
+    #     end_key="check_refined_answer",
+    # )
+
+    # graph.add_edge(
+    #     start_key="check_refined_answer",
+    #     end_key=END,
+    # )
+
+    return graph

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/nodes/generate_initial_answer.py

@@ -0,0 +1,276 @@
+from datetime import datetime
+from typing import Any
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_content
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.models import AgentBaseMetrics
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import (
+    calculate_initial_agent_stats,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import get_query_info
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import (
+    remove_document_citations,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    get_prompt_enrichment_components,
+)
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    trim_prompt_piece,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import InitialAgentResultStats
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import INITIAL_RAG_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    INITIAL_RAG_PROMPT_NO_SUB_QUESTIONS,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    SUB_QUESTION_ANSWER_TEMPLATE,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import UNKNOWN_ANSWER
+from onyx.agents.agent_search.shared_graph_utils.utils import (
+    dispatch_main_answer_stop_info,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import format_docs
+from onyx.agents.agent_search.shared_graph_utils.utils import parse_question_id
+from onyx.chat.models import AgentAnswerPiece
+from onyx.chat.models import ExtendedToolResponse
+from onyx.configs.agent_configs import AGENT_MAX_ANSWER_CONTEXT_DOCS
+from onyx.configs.agent_configs import AGENT_MIN_ORIG_QUESTION_DOCS
+from onyx.context.search.models import InferenceSection
+from onyx.tools.tool_implementations.search.search_tool import yield_search_responses
+
+
+def generate_initial_answer(
+    state: SearchSQState, config: RunnableConfig
+) -> InitialAnswerUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------GENERATE INITIAL---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    prompt_enrichment_components = get_prompt_enrichment_components(agent_a_config)
+
+    sub_questions_cited_docs = state.cited_docs
+    all_original_question_documents = state.all_original_question_documents
+
+    consolidated_context_docs: list[InferenceSection] = sub_questions_cited_docs
+    counter = 0
+    for original_doc_number, original_doc in enumerate(all_original_question_documents):
+        if original_doc_number not in sub_questions_cited_docs:
+            if (
+                counter <= AGENT_MIN_ORIG_QUESTION_DOCS
+                or len(consolidated_context_docs) < AGENT_MAX_ANSWER_CONTEXT_DOCS
+            ):
+                consolidated_context_docs.append(original_doc)
+                counter += 1
+
+    # sort docs by their scores - though the scores refer to different questions
+    relevant_docs = dedup_inference_sections(
+        consolidated_context_docs, consolidated_context_docs
+    )
+
+    decomp_questions = []
+
+    # Use the query info from the base document retrieval
+    query_info = get_query_info(state.original_question_retrieval_results)
+    if agent_a_config.search_tool is None:
+        raise ValueError("search_tool must be provided for agentic search")
+    for tool_response in yield_search_responses(
+        query=question,
+        reranked_sections=relevant_docs,
+        final_context_sections=relevant_docs,
+        search_query_info=query_info,
+        get_section_relevance=lambda: None,  # TODO: add relevance
+        search_tool=agent_a_config.search_tool,
+    ):
+        dispatch_custom_event(
+            "tool_response",
+            ExtendedToolResponse(
+                id=tool_response.id,
+                response=tool_response.response,
+                level=0,
+                level_question_nr=0,  # 0, 0 is the base question
+            ),
+        )
+
+    if len(relevant_docs) == 0:
+        dispatch_custom_event(
+            "initial_agent_answer",
+            AgentAnswerPiece(
+                answer_piece=UNKNOWN_ANSWER,
+                level=0,
+                level_question_nr=0,
+                answer_type="agent_level_answer",
+            ),
+        )
+        dispatch_main_answer_stop_info(0)
+
+        answer = UNKNOWN_ANSWER
+        initial_agent_stats = InitialAgentResultStats(
+            sub_questions={},
+            original_question={},
+            agent_effectiveness={},
+        )
+
+    else:
+        decomp_answer_results = state.decomp_answer_results
+
+        good_qa_list: list[str] = []
+
+        sub_question_nr = 1
+
+        for decomp_answer_result in decomp_answer_results:
+            decomp_questions.append(decomp_answer_result.question)
+            _, question_nr = parse_question_id(decomp_answer_result.question_id)
+            if (
+                decomp_answer_result.quality.lower().startswith("yes")
+                and len(decomp_answer_result.answer) > 0
+                and decomp_answer_result.answer != UNKNOWN_ANSWER
+            ):
+                good_qa_list.append(
+                    SUB_QUESTION_ANSWER_TEMPLATE.format(
+                        sub_question=decomp_answer_result.question,
+                        sub_answer=decomp_answer_result.answer,
+                        sub_question_nr=sub_question_nr,
+                    )
+                )
+            sub_question_nr += 1
+
+        if len(good_qa_list) > 0:
+            sub_question_answer_str = "\n\n------\n\n".join(good_qa_list)
+        else:
+            sub_question_answer_str = ""
+
+        # Determine which base prompt to use given the sub-question information
+        if len(good_qa_list) > 0:
+            base_prompt = INITIAL_RAG_PROMPT
+        else:
+            base_prompt = INITIAL_RAG_PROMPT_NO_SUB_QUESTIONS
+
+        model = agent_a_config.fast_llm
+
+        doc_context = format_docs(relevant_docs)
+        doc_context = trim_prompt_piece(
+            model.config,
+            doc_context,
+            base_prompt
+            + sub_question_answer_str
+            + prompt_enrichment_components.persona_prompts.contextualized_prompt
+            + prompt_enrichment_components.history
+            + prompt_enrichment_components.date_str,
+        )
+
+        msg = [
+            HumanMessage(
+                content=base_prompt.format(
+                    question=question,
+                    answered_sub_questions=remove_document_citations(
+                        sub_question_answer_str
+                    ),
+                    relevant_docs=format_docs(relevant_docs),
+                    persona_specification=prompt_enrichment_components.persona_prompts.contextualized_prompt,
+                    history=prompt_enrichment_components.history,
+                    date_prompt=prompt_enrichment_components.date_str,
+                )
+            )
+        ]
+
+        streamed_tokens: list[str | list[str | dict[str, Any]]] = [""]
+        dispatch_timings: list[float] = []
+        for message in model.stream(msg):
+            # TODO: in principle, the answer here COULD contain images, but we don't support that yet
+            content = message.content
+            if not isinstance(content, str):
+                raise ValueError(
+                    f"Expected content to be a string, but got {type(content)}"
+                )
+            start_stream_token = datetime.now()
+
+            dispatch_custom_event(
+                "initial_agent_answer",
+                AgentAnswerPiece(
+                    answer_piece=content,
+                    level=0,
+                    level_question_nr=0,
+                    answer_type="agent_level_answer",
+                ),
+            )
+            end_stream_token = datetime.now()
+            dispatch_timings.append(
+                (end_stream_token - start_stream_token).microseconds
+            )
+            streamed_tokens.append(content)
+
+        logger.info(
+            f"Average dispatch time for initial answer: {sum(dispatch_timings) / len(dispatch_timings)}"
+        )
+
+        dispatch_main_answer_stop_info(0)
+        response = merge_content(*streamed_tokens)
+        answer = cast(str, response)
+
+        initial_agent_stats = calculate_initial_agent_stats(
+            state.decomp_answer_results, state.original_question_retrieval_stats
+        )
+
+        logger.debug(
+            f"\n\nYYYYY--Sub-Questions:\n\n{sub_question_answer_str}\n\nStats:\n\n"
+        )
+
+        if initial_agent_stats:
+            logger.debug(initial_agent_stats.original_question)
+            logger.debug(initial_agent_stats.sub_questions)
+            logger.debug(initial_agent_stats.agent_effectiveness)
+
+    now_end = datetime.now()
+
+    agent_base_end_time = datetime.now()
+
+    agent_base_metrics = AgentBaseMetrics(
+        num_verified_documents_total=len(relevant_docs),
+        num_verified_documents_core=state.original_question_retrieval_stats.verified_count,
+        verified_avg_score_core=state.original_question_retrieval_stats.verified_avg_scores,
+        num_verified_documents_base=initial_agent_stats.sub_questions.get(
+            "num_verified_documents", None
+        ),
+        verified_avg_score_base=initial_agent_stats.sub_questions.get(
+            "verified_avg_score", None
+        ),
+        base_doc_boost_factor=initial_agent_stats.agent_effectiveness.get(
+            "utilized_chunk_ratio", None
+        ),
+        support_boost_factor=initial_agent_stats.agent_effectiveness.get(
+            "support_ratio", None
+        ),
+        duration__s=(agent_base_end_time - state.agent_start_time).total_seconds(),
+    )
+
+    logger.info(
+        f"{now_start} -- Main - Initial Answer generation,  Time taken: {now_end - now_start}"
+    )
+
+    return InitialAnswerUpdate(
+        initial_answer=answer,
+        initial_agent_stats=initial_agent_stats,
+        generated_sub_questions=decomp_questions,
+        agent_base_end_time=agent_base_end_time,
+        agent_base_metrics=agent_base_metrics,
+        log_messages=[
+            f"{now_start} -- Main - Initial Answer generation,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/nodes/ingest_initial_base_retrieval.py

@@ -0,0 +1,43 @@
+from datetime import datetime
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval__subgraph.states import (
+    BaseRawSearchOutput,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    ExpandedRetrievalUpdate,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+
+
+def ingest_initial_base_retrieval(
+    state: BaseRawSearchOutput,
+) -> ExpandedRetrievalUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------INGEST INITIAL RETRIEVAL---")
+
+    sub_question_retrieval_stats = (
+        state.base_expanded_retrieval_result.sub_question_retrieval_stats
+    )
+    # if sub_question_retrieval_stats is None:
+    #     sub_question_retrieval_stats = AgentChunkStats()
+    # else:
+    #     sub_question_retrieval_stats = sub_question_retrieval_stats
+
+    sub_question_retrieval_stats = sub_question_retrieval_stats or AgentChunkStats()
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INGEST INITIAL RETRIEVAL END---"
+    )
+
+    return ExpandedRetrievalUpdate(
+        original_question_retrieval_results=state.base_expanded_retrieval_result.expanded_queries_results,
+        all_original_question_documents=state.base_expanded_retrieval_result.context_documents,
+        original_question_retrieval_stats=sub_question_retrieval_stats,
+        log_messages=[
+            f"{now_start} -- Main - Ingestion base retrieval,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/nodes/initial_answer_quality_check.py

@@ -0,0 +1,42 @@
+from datetime import datetime
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerQualityUpdate,
+)
+
+
+def initial_answer_quality_check(state: SearchSQState) -> InitialAnswerQualityUpdate:
+    """
+    Check whether the final output satisfies the original user question
+
+    Args:
+        state (messages): The current state
+
+    Returns:
+        InitialAnswerQualityUpdate
+    """
+
+    now_start = datetime.now()
+
+    logger.debug(
+        f"--------{now_start}--------Checking for base answer validity - for not set True/False manually"
+    )
+
+    verdict = True
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INITIAL ANSWER QUALITY CHECK END---"
+    )
+
+    return InitialAnswerQualityUpdate(
+        initial_answer_quality_eval=verdict,
+        log_messages=[
+            f"{now_start} -- Main - Initial answer quality check,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/nodes/retrieval_consolidation.py

@@ -0,0 +1,14 @@
+from datetime import datetime
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.states import (
+    SearchSQState,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import LoggerUpdate
+
+
+def retrieval_consolidation(
+    state: SearchSQState,
+) -> LoggerUpdate:
+    now_start = datetime.now()
+
+    return LoggerUpdate(log_messages=[f"{now_start} -- Retrieval consolidation"])

backend/onyx/agents/agent_search/deep_search_a/initial__retrieval_sub_answers__subgraph/states.py

@@ -0,0 +1,54 @@
+from operator import add
+from typing import Annotated
+from typing import TypedDict
+
+from onyx.agents.agent_search.core_state import CoreState
+from onyx.agents.agent_search.deep_search_a.main__graph.states import BaseDecompUpdate
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    DecompAnswersUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    ExpandedRetrievalUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    ExploratorySearchUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerQualityUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.models import (
+    ExpandedRetrievalResult,
+)
+
+### States ###
+
+
+class SearchSQInput(CoreState):
+    pass
+
+
+## Graph State
+
+
+class SearchSQState(
+    # This includes the core state
+    SearchSQInput,
+    BaseDecompUpdate,
+    InitialAnswerUpdate,
+    DecompAnswersUpdate,
+    ExpandedRetrievalUpdate,
+    InitialAnswerQualityUpdate,
+    ExploratorySearchUpdate,
+):
+    # expanded_retrieval_result: Annotated[list[ExpandedRetrievalResult], add]
+    base_raw_search_result: Annotated[list[ExpandedRetrievalResult], add]
+
+
+## Graph Output State - presently not used
+
+
+class SearchSQOutput(TypedDict):
+    log_messages: list[str]

backend/onyx/agents/agent_search/deep_search_a/main__graph/edges.py

@@ -0,0 +1,120 @@
+from collections.abc import Hashable
+from datetime import datetime
+from typing import cast
+from typing import Literal
+
+from langchain_core.runnables import RunnableConfig
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    RequireRefinedAnswerUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.utils import make_question_id
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def route_initial_tool_choice(
+    state: MainState, config: RunnableConfig
+) -> Literal["tool_call", "agent_search_start", "logging_node"]:
+    agent_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    if state.tool_choice is not None:
+        if (
+            agent_config.use_agentic_search
+            and agent_config.search_tool is not None
+            and state.tool_choice.tool.name == agent_config.search_tool.name
+        ):
+            return "agent_search_start"
+        else:
+            return "tool_call"
+    else:
+        return "logging_node"
+
+
+def parallelize_initial_sub_question_answering(
+    state: MainState,
+) -> list[Send | Hashable]:
+    now_start = datetime.now()
+    if len(state.initial_decomp_questions) > 0:
+        # sub_question_record_ids = [subq_record.id for subq_record in state["sub_question_records"]]
+        # if len(state["sub_question_records"]) == 0:
+        #     if state["config"].use_persistence:
+        #         raise ValueError("No sub-questions found for initial decompozed questions")
+        #     else:
+        #         # in this case, we are doing retrieval on the original question.
+        #         # to make all the logic consistent, we create a new sub-question
+        #         # with the same content as the original question
+        #         sub_question_record_ids = [1] * len(state["initial_decomp_questions"])
+
+        return [
+            Send(
+                "answer_query_subgraph",
+                AnswerQuestionInput(
+                    question=question,
+                    question_id=make_question_id(0, question_nr + 1),
+                    log_messages=[
+                        f"{now_start} -- Main Edge - Parallelize Initial Sub-question Answering"
+                    ],
+                ),
+            )
+            for question_nr, question in enumerate(state.initial_decomp_questions)
+        ]
+
+    else:
+        return [
+            Send(
+                "ingest_answers",
+                AnswerQuestionOutput(
+                    answer_results=[],
+                ),
+            )
+        ]
+
+
+# Define the function that determines whether to continue or not
+def continue_to_refined_answer_or_end(
+    state: RequireRefinedAnswerUpdate,
+) -> Literal["refined_sub_question_creation", "logging_node"]:
+    if state.require_refined_answer_eval:
+        return "refined_sub_question_creation"
+    else:
+        return "logging_node"
+
+
+def parallelize_refined_sub_question_answering(
+    state: MainState,
+) -> list[Send | Hashable]:
+    now_start = datetime.now()
+    if len(state.refined_sub_questions) > 0:
+        return [
+            Send(
+                "answer_refined_question",
+                AnswerQuestionInput(
+                    question=question_data.sub_question,
+                    question_id=make_question_id(1, question_nr),
+                    log_messages=[
+                        f"{now_start} -- Main Edge - Parallelize Refined Sub-question Answering"
+                    ],
+                ),
+            )
+            for question_nr, question_data in state.refined_sub_questions.items()
+        ]
+
+    else:
+        return [
+            Send(
+                "ingest_refined_sub_answers",
+                AnswerQuestionOutput(
+                    answer_results=[],
+                ),
+            )
+        ]

backend/onyx/agents/agent_search/deep_search_a/main__graph/graph_builder.py

@@ -0,0 +1,410 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.initial__retrieval_sub_answers__subgraph.graph_builder import (
+    initial_search_sq_subgraph_builder,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.edges import (
+    continue_to_refined_answer_or_end,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.edges import (
+    parallelize_refined_sub_question_answering,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.edges import (
+    route_initial_tool_choice,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.agent_logging import (
+    agent_logging,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.agent_search_start import (
+    agent_search_start,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.answer_comparison import (
+    answer_comparison,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.entity_term_extraction_llm import (
+    entity_term_extraction_llm,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.generate_refined_answer import (
+    generate_refined_answer,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.ingest_refined_answers import (
+    ingest_refined_answers,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.refined_answer_decision import (
+    refined_answer_decision,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.nodes.refined_sub_question_creation import (
+    refined_sub_question_creation,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainInput
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.deep_search_a.refinement__consolidate_sub_answers__subgraph.graph_builder import (
+    answer_refined_query_graph_builder,
+)
+from onyx.agents.agent_search.orchestration.nodes.basic_use_tool_response import (
+    basic_use_tool_response,
+)
+from onyx.agents.agent_search.orchestration.nodes.llm_tool_choice import llm_tool_choice
+from onyx.agents.agent_search.orchestration.nodes.prepare_tool_input import (
+    prepare_tool_input,
+)
+from onyx.agents.agent_search.orchestration.nodes.tool_call import tool_call
+from onyx.agents.agent_search.shared_graph_utils.utils import get_test_config
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+test_mode = False
+
+
+def main_graph_builder(test_mode: bool = False) -> StateGraph:
+    graph = StateGraph(
+        state_schema=MainState,
+        input=MainInput,
+    )
+
+    # graph.add_node(
+    #     node="agent_path_decision",
+    #     action=agent_path_decision,
+    # )
+
+    # graph.add_node(
+    #     node="agent_path_routing",
+    #     action=agent_path_routing,
+    # )
+
+    # graph.add_node(
+    #     node="LLM",
+    #     action=direct_llm_handling,
+    # )
+    graph.add_node(
+        node="prepare_tool_input",
+        action=prepare_tool_input,
+    )
+    graph.add_node(
+        node="initial_tool_choice",
+        action=llm_tool_choice,
+    )
+    graph.add_node(
+        node="tool_call",
+        action=tool_call,
+    )
+
+    graph.add_node(
+        node="basic_use_tool_response",
+        action=basic_use_tool_response,
+    )
+    graph.add_node(
+        node="agent_search_start",
+        action=agent_search_start,
+    )
+
+    # graph.add_node(
+    #     node="initial_sub_question_creation",
+    #     action=initial_sub_question_creation,
+    # )
+
+    initial_search_sq_subgraph = initial_search_sq_subgraph_builder().compile()
+    graph.add_node(
+        node="initial_search_sq_subgraph",
+        action=initial_search_sq_subgraph,
+    )
+
+    # answer_query_subgraph = answer_query_graph_builder().compile()
+    # graph.add_node(
+    #     node="answer_query_subgraph",
+    #     action=answer_query_subgraph,
+    # )
+
+    # base_raw_search_subgraph = base_raw_search_graph_builder().compile()
+    # graph.add_node(
+    #     node="base_raw_search_subgraph",
+    #     action=base_raw_search_subgraph,
+    # )
+
+    # refined_answer_subgraph = refined_answers_graph_builder().compile()
+    # graph.add_node(
+    #     node="refined_answer_subgraph",
+    #     action=refined_answer_subgraph,
+    # )
+
+    graph.add_node(
+        node="refined_sub_question_creation",
+        action=refined_sub_question_creation,
+    )
+
+    answer_refined_question = answer_refined_query_graph_builder().compile()
+    graph.add_node(
+        node="answer_refined_question",
+        action=answer_refined_question,
+    )
+
+    graph.add_node(
+        node="ingest_refined_answers",
+        action=ingest_refined_answers,
+    )
+
+    graph.add_node(
+        node="generate_refined_answer",
+        action=generate_refined_answer,
+    )
+
+    # graph.add_node(
+    #     node="check_refined_answer",
+    #     action=check_refined_answer,
+    # )
+
+    # graph.add_node(
+    #     node="ingest_initial_retrieval",
+    #     action=ingest_initial_base_retrieval,
+    # )
+
+    # graph.add_node(
+    #     node="retrieval_consolidation",
+    #     action=retrieval_consolidation,
+    # )
+
+    # graph.add_node(
+    #     node="ingest_initial_sub_question_answers",
+    #     action=ingest_initial_sub_question_answers,
+    # )
+    # graph.add_node(
+    #     node="generate_initial_answer",
+    #     action=generate_initial_answer,
+    # )
+
+    # graph.add_node(
+    #     node="initial_answer_quality_check",
+    #     action=initial_answer_quality_check,
+    # )
+
+    graph.add_node(
+        node="entity_term_extraction_llm",
+        action=entity_term_extraction_llm,
+    )
+    graph.add_node(
+        node="refined_answer_decision",
+        action=refined_answer_decision,
+    )
+    graph.add_node(
+        node="answer_comparison",
+        action=answer_comparison,
+    )
+    graph.add_node(
+        node="logging_node",
+        action=agent_logging,
+    )
+    # if test_mode:
+    #     graph.add_node(
+    #         node="generate_initial_base_answer",
+    #         action=generate_initial_base_answer,
+    #     )
+
+    ### Add edges ###
+
+    # raph.add_edge(start_key=START, end_key="base_raw_search_subgraph")
+
+    # graph.add_edge(
+    #     start_key=START,
+    #     end_key="agent_path_decision",
+    # )
+
+    # graph.add_edge(
+    #     start_key="agent_path_decision",
+    #     end_key="agent_path_routing",
+    # )
+    graph.add_edge(start_key=START, end_key="prepare_tool_input")
+
+    graph.add_edge(
+        start_key="prepare_tool_input",
+        end_key="initial_tool_choice",
+    )
+
+    graph.add_conditional_edges(
+        "initial_tool_choice",
+        route_initial_tool_choice,
+        ["tool_call", "agent_search_start", "logging_node"],
+    )
+
+    graph.add_edge(
+        start_key="tool_call",
+        end_key="basic_use_tool_response",
+    )
+    graph.add_edge(
+        start_key="basic_use_tool_response",
+        end_key="logging_node",
+    )
+
+    graph.add_edge(
+        start_key="agent_search_start",
+        end_key="initial_search_sq_subgraph",
+    )
+    # graph.add_edge(
+    #     start_key="agent_search_start",
+    #     end_key="base_raw_search_subgraph",
+    # )
+
+    graph.add_edge(
+        start_key="agent_search_start",
+        end_key="entity_term_extraction_llm",
+    )
+
+    # graph.add_edge(
+    #     start_key="agent_search_start",
+    #     end_key="initial_sub_question_creation",
+    # )
+
+    # graph.add_edge(
+    #     start_key="base_raw_search_subgraph",
+    #     end_key="ingest_initial_retrieval",
+    # )
+
+    # graph.add_edge(
+    #     start_key=["ingest_initial_retrieval", "ingest_initial_sub_question_answers"],
+    #     end_key="retrieval_consolidation",
+    # )
+
+    # graph.add_edge(
+    #     start_key="retrieval_consolidation",
+    #     end_key="generate_initial_answer",
+    # )
+
+    # graph.add_edge(
+    #     start_key="LLM",
+    #     end_key=END,
+    # )
+
+    # graph.add_edge(
+    #     start_key=START,
+    #     end_key="initial_sub_question_creation",
+    # )
+
+    # graph.add_conditional_edges(
+    #     source="initial_sub_question_creation",
+    #     path=parallelize_initial_sub_question_answering,
+    #     path_map=["answer_query_subgraph"],
+    # )
+    # graph.add_edge(
+    #     start_key="answer_query_subgraph",
+    #     end_key="ingest_initial_sub_question_answers",
+    # )
+
+    # graph.add_edge(
+    #     start_key="retrieval_consolidation",
+    #     end_key="generate_initial_answer",
+    # )
+
+    # graph.add_edge(
+    #     start_key="generate_initial_answer",
+    #     end_key="entity_term_extraction_llm",
+    # )
+
+    # graph.add_edge(
+    #     start_key="generate_initial_answer",
+    #     end_key="initial_answer_quality_check",
+    # )
+
+    # graph.add_edge(
+    #     start_key=["initial_answer_quality_check", "entity_term_extraction_llm"],
+    #     end_key="refined_answer_decision",
+    # )
+    # graph.add_edge(
+    #     start_key="initial_answer_quality_check",
+    #     end_key="refined_answer_decision",
+    # )
+
+    graph.add_edge(
+        start_key=["initial_search_sq_subgraph", "entity_term_extraction_llm"],
+        end_key="refined_answer_decision",
+    )
+
+    graph.add_conditional_edges(
+        source="refined_answer_decision",
+        path=continue_to_refined_answer_or_end,
+        path_map=["refined_sub_question_creation", "logging_node"],
+    )
+
+    graph.add_conditional_edges(
+        source="refined_sub_question_creation",  # DONE
+        path=parallelize_refined_sub_question_answering,
+        path_map=["answer_refined_question"],
+    )
+    graph.add_edge(
+        start_key="answer_refined_question",  # HERE
+        end_key="ingest_refined_answers",
+    )
+
+    graph.add_edge(
+        start_key="ingest_refined_answers",
+        end_key="generate_refined_answer",
+    )
+
+    # graph.add_conditional_edges(
+    #     source="refined_answer_decision",
+    #     path=continue_to_refined_answer_or_end,
+    #     path_map=["refined_answer_subgraph", END],
+    # )
+
+    # graph.add_edge(
+    #     start_key="refined_answer_subgraph",
+    #     end_key="generate_refined_answer",
+    # )
+
+    graph.add_edge(
+        start_key="generate_refined_answer",
+        end_key="answer_comparison",
+    )
+    graph.add_edge(
+        start_key="answer_comparison",
+        end_key="logging_node",
+    )
+
+    graph.add_edge(
+        start_key="logging_node",
+        end_key=END,
+    )
+
+    # graph.add_edge(
+    #     start_key="generate_refined_answer",
+    #     end_key="check_refined_answer",
+    # )
+
+    # graph.add_edge(
+    #     start_key="check_refined_answer",
+    #     end_key=END,
+    # )
+
+    return graph
+
+
+if __name__ == "__main__":
+    pass
+
+    from onyx.db.engine import get_session_context_manager
+    from onyx.llm.factory import get_default_llms
+    from onyx.context.search.models import SearchRequest
+
+    graph = main_graph_builder()
+    compiled_graph = graph.compile()
+    primary_llm, fast_llm = get_default_llms()
+
+    with get_session_context_manager() as db_session:
+        search_request = SearchRequest(query="Who created Excel?")
+        agent_a_config, search_tool = get_test_config(
+            db_session, primary_llm, fast_llm, search_request
+        )
+
+        inputs = MainInput(
+            base_question=agent_a_config.search_request.query, log_messages=[]
+        )
+
+        for thing in compiled_graph.stream(
+            input=inputs,
+            config={"configurable": {"config": agent_a_config}},
+            # stream_mode="debug",
+            # debug=True,
+            subgraphs=True,
+        ):
+            logger.debug(thing)

backend/onyx/agents/agent_search/deep_search_a/main__graph/models.py

@@ -0,0 +1,36 @@
+from pydantic import BaseModel
+
+
+class FollowUpSubQuestion(BaseModel):
+    sub_question: str
+    sub_question_id: str
+    verified: bool
+    answered: bool
+    answer: str
+
+
+class AgentTimings(BaseModel):
+    base_duration__s: float | None
+    refined_duration__s: float | None
+    full_duration__s: float | None
+
+
+class AgentBaseMetrics(BaseModel):
+    num_verified_documents_total: int | None
+    num_verified_documents_core: int | None
+    verified_avg_score_core: float | None
+    num_verified_documents_base: int | float | None
+    verified_avg_score_base: float | None = None
+    base_doc_boost_factor: float | None = None
+    support_boost_factor: float | None = None
+    duration__s: float | None = None
+
+
+class AgentRefinedMetrics(BaseModel):
+    refined_doc_boost_factor: float | None = None
+    refined_question_boost_factor: float | None = None
+    duration__s: float | None = None
+
+
+class AgentAdditionalMetrics(BaseModel):
+    pass

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/agent_logging.py

@@ -0,0 +1,135 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    AgentAdditionalMetrics,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.models import AgentTimings
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainOutput
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.models import CombinedAgentMetrics
+from onyx.db.chat import log_agent_metrics
+from onyx.db.chat import log_agent_sub_question_results
+
+
+def agent_logging(state: MainState, config: RunnableConfig) -> MainOutput:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------LOGGING NODE---")
+
+    agent_start_time = state.agent_start_time
+    agent_base_end_time = state.agent_base_end_time
+    agent_refined_start_time = state.agent_refined_start_time
+    agent_refined_end_time = state.agent_refined_end_time
+    agent_end_time = agent_refined_end_time or agent_base_end_time
+
+    agent_base_duration = None
+    if agent_base_end_time:
+        agent_base_duration = (agent_base_end_time - agent_start_time).total_seconds()
+
+    agent_refined_duration = None
+    if agent_refined_start_time and agent_refined_end_time:
+        agent_refined_duration = (
+            agent_refined_end_time - agent_refined_start_time
+        ).total_seconds()
+
+    agent_full_duration = None
+    if agent_end_time:
+        agent_full_duration = (agent_end_time - agent_start_time).total_seconds()
+
+    agent_type = "refined" if agent_refined_duration else "base"
+
+    agent_base_metrics = state.agent_base_metrics
+    agent_refined_metrics = state.agent_refined_metrics
+
+    combined_agent_metrics = CombinedAgentMetrics(
+        timings=AgentTimings(
+            base_duration__s=agent_base_duration,
+            refined_duration__s=agent_refined_duration,
+            full_duration__s=agent_full_duration,
+        ),
+        base_metrics=agent_base_metrics,
+        refined_metrics=agent_refined_metrics,
+        additional_metrics=AgentAdditionalMetrics(),
+    )
+
+    persona_id = None
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    if agent_a_config.search_request.persona:
+        persona_id = agent_a_config.search_request.persona.id
+
+    user_id = None
+    if agent_a_config.search_tool is not None:
+        user = agent_a_config.search_tool.user
+        if user:
+            user_id = user.id
+
+    # log the agent metrics
+    if agent_a_config.db_session is not None:
+        if agent_base_duration is not None:
+            log_agent_metrics(
+                db_session=agent_a_config.db_session,
+                user_id=user_id,
+                persona_id=persona_id,
+                agent_type=agent_type,
+                start_time=agent_start_time,
+                agent_metrics=combined_agent_metrics,
+            )
+
+        if agent_a_config.use_agentic_persistence:
+            # Persist the sub-answer in the database
+            db_session = agent_a_config.db_session
+            chat_session_id = agent_a_config.chat_session_id
+            primary_message_id = agent_a_config.message_id
+            sub_question_answer_results = state.decomp_answer_results
+
+            log_agent_sub_question_results(
+                db_session=db_session,
+                chat_session_id=chat_session_id,
+                primary_message_id=primary_message_id,
+                sub_question_answer_results=sub_question_answer_results,
+            )
+
+        # if chat_session_id is not None and primary_message_id is not None and sub_question_id is not None:
+        #     create_sub_answer(
+        #         db_session=db_session,
+        #         chat_session_id=chat_session_id,
+        #         primary_message_id=primary_message_id,
+        #         sub_question_id=sub_question_id,
+        #         answer=answer_str,
+        # #     )
+        # pass
+
+    now_end = datetime.now()
+    main_output = MainOutput(
+        log_messages=[
+            f"{now_start} -- Main - Logging,  Time taken: {now_end - now_start}"
+        ],
+    )
+
+    logger.info(f"--------{now_end}--{now_end - now_start}--------LOGGING NODE END---")
+
+    for log_message in state.log_messages:
+        logger.info(log_message)
+
+    logger.info("")
+
+    if state.agent_base_metrics:
+        logger.info(f"Initial loop: {state.agent_base_metrics.duration__s}")
+    if state.agent_refined_metrics:
+        logger.info(f"Refined loop: {state.agent_refined_metrics.duration__s}")
+    if (
+        state.agent_base_metrics
+        and state.agent_refined_metrics
+        and state.agent_base_metrics.duration__s
+        and state.agent_refined_metrics.duration__s
+    ):
+        logger.info(
+            f"Total time: {float(state.agent_base_metrics.duration__s) + float(state.agent_refined_metrics.duration__s)}"
+        )
+
+    return main_output

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/agent_path_decision.py

@@ -0,0 +1,36 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.deep_search_a.main__graph.states import RoutingDecision
+from onyx.agents.agent_search.models import AgentSearchConfig
+
+
+def agent_path_decision(state: MainState, config: RunnableConfig) -> RoutingDecision:
+    now_start = datetime.now()
+
+    cast(AgentSearchConfig, config["metadata"]["config"])
+
+    # perform_initial_search_path_decision = (
+    #    agent_a_config.perform_initial_search_path_decision
+    # )
+
+    logger.info(f"--------{now_start}--------DECIDING TO SEARCH OR GO TO LLM---")
+
+    routing = "agent_search"
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------DECIDING TO SEARCH OR GO TO LLM END---"
+    )
+    return RoutingDecision(
+        # Decide which route to take
+        routing_decision=routing,
+        log_messages=[
+            f"{now_end} -- Path decision: {routing},  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/agent_path_routing.py

@@ -0,0 +1,31 @@
+from datetime import datetime
+from typing import Literal
+
+from langgraph.types import Command
+
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+
+
+def agent_path_routing(
+    state: MainState,
+) -> Command[Literal["agent_search_start", "LLM"]]:
+    now_start = datetime.now()
+    routing = state.routing_decision if hasattr(state, "routing") else "agent_search"
+
+    if routing == "agent_search":
+        agent_path = "agent_search_start"
+    else:
+        agent_path = "LLM"
+
+    now_end = datetime.now()
+
+    return Command(
+        # state update
+        update={
+            "log_messages": [
+                f"{now_start} -- Main - Path routing: {agent_path},  Time taken: {now_end - now_start}"
+            ]
+        },
+        # control flow
+        goto=agent_path,
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/agent_search_start.py

@@ -0,0 +1,59 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    ExploratorySearchUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    build_history_prompt,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import retrieve_search_docs
+from onyx.configs.agent_configs import AGENT_EXPLORATORY_SEARCH_RESULTS
+from onyx.context.search.models import InferenceSection
+
+
+def agent_search_start(
+    state: MainState, config: RunnableConfig
+) -> ExploratorySearchUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------EXPLORATORY SEARCH START---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    chat_session_id = agent_a_config.chat_session_id
+    primary_message_id = agent_a_config.message_id
+    agent_a_config.fast_llm
+
+    history = build_history_prompt(agent_a_config, question)
+
+    if chat_session_id is None or primary_message_id is None:
+        raise ValueError(
+            "chat_session_id and message_id must be provided for agent search"
+        )
+
+    # Initial search to inform decomposition. Just get top 3 fits
+
+    search_tool = agent_a_config.search_tool
+    if search_tool is None:
+        raise ValueError("search_tool must be provided for agentic search")
+    retrieved_docs: list[InferenceSection] = retrieve_search_docs(search_tool, question)
+
+    exploratory_search_results = retrieved_docs[:AGENT_EXPLORATORY_SEARCH_RESULTS]
+    now_end = datetime.now()
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------EXPLORATORY SEARCH END---"
+    )
+
+    return ExploratorySearchUpdate(
+        exploratory_search_results=exploratory_search_results,
+        previous_history_summary=history,
+        log_messages=[
+            f"{now_start} -- Main - Exploratory Search,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/answer_comparison.py

@@ -0,0 +1,60 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import HumanMessage
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import AnswerComparison
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.prompts import ANSWER_COMPARISON_PROMPT
+from onyx.chat.models import RefinedAnswerImprovement
+
+
+def answer_comparison(state: MainState, config: RunnableConfig) -> AnswerComparison:
+    now_start = datetime.now()
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    initial_answer = state.initial_answer
+    refined_answer = state.refined_answer
+
+    logger.info(f"--------{now_start}--------ANSWER COMPARISON STARTED--")
+
+    answer_comparison_prompt = ANSWER_COMPARISON_PROMPT.format(
+        question=question, initial_answer=initial_answer, refined_answer=refined_answer
+    )
+
+    msg = [HumanMessage(content=answer_comparison_prompt)]
+
+    # Get the rewritten queries in a defined format
+    model = agent_a_config.fast_llm
+
+    # no need to stream this
+    resp = model.invoke(msg)
+
+    refined_answer_improvement = (
+        isinstance(resp.content, str) and "yes" in resp.content.lower()
+    )
+
+    dispatch_custom_event(
+        "refined_answer_improvement",
+        RefinedAnswerImprovement(
+            refined_answer_improvement=refined_answer_improvement,
+        ),
+    )
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- MAIN - Answer comparison,  Time taken: {now_end - now_start}"
+    )
+
+    return AnswerComparison(
+        refined_answer_improvement_eval=refined_answer_improvement,
+        log_messages=[
+            f"{now_start} -- Answer comparison: {refined_answer_improvement},  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/direct_llm_handling.py

@@ -0,0 +1,83 @@
+from datetime import datetime
+from typing import Any
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_content
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.prompts import DIRECT_LLM_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.utils import (
+    get_persona_agent_prompt_expressions,
+)
+from onyx.chat.models import AgentAnswerPiece
+
+
+def direct_llm_handling(
+    state: MainState, config: RunnableConfig
+) -> InitialAnswerUpdate:
+    now_start = datetime.now()
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    persona_contextualialized_prompt = get_persona_agent_prompt_expressions(
+        agent_a_config.search_request.persona
+    ).contextualized_prompt
+
+    logger.info(f"--------{now_start}--------LLM HANDLING START---")
+
+    model = agent_a_config.fast_llm
+
+    msg = [
+        HumanMessage(
+            content=DIRECT_LLM_PROMPT.format(
+                persona_specification=persona_contextualialized_prompt,
+                question=question,
+            )
+        )
+    ]
+
+    streamed_tokens: list[str | list[str | dict[str, Any]]] = [""]
+
+    for message in model.stream(msg):
+        # TODO: in principle, the answer here COULD contain images, but we don't support that yet
+        content = message.content
+        if not isinstance(content, str):
+            raise ValueError(
+                f"Expected content to be a string, but got {type(content)}"
+            )
+        dispatch_custom_event(
+            "initial_agent_answer",
+            AgentAnswerPiece(
+                answer_piece=content,
+                level=0,
+                level_question_nr=0,
+                answer_type="agent_level_answer",
+            ),
+        )
+        streamed_tokens.append(content)
+
+    response = merge_content(*streamed_tokens)
+    answer = cast(str, response)
+
+    now_end = datetime.now()
+
+    logger.info(f"--------{now_end}--{now_end - now_start}--------LLM HANDLING END---")
+
+    return InitialAnswerUpdate(
+        initial_answer=answer,
+        initial_agent_stats=None,
+        generated_sub_questions=[],
+        agent_base_end_time=now_end,
+        agent_base_metrics=None,
+        log_messages=[
+            f"{now_start} -- Main - LLM handling: {answer},  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/entity_term_extraction_llm.py

@@ -0,0 +1,126 @@
+import json
+import re
+from datetime import datetime
+from typing import cast
+
+from langchain_core.messages import HumanMessage
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    EntityTermExtractionUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    trim_prompt_piece,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import Entity
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    EntityRelationshipTermExtraction,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import Relationship
+from onyx.agents.agent_search.shared_graph_utils.models import Term
+from onyx.agents.agent_search.shared_graph_utils.prompts import ENTITY_TERM_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.utils import format_docs
+
+
+def entity_term_extraction_llm(
+    state: MainState, config: RunnableConfig
+) -> EntityTermExtractionUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------GENERATE ENTITIES & TERMS---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    if not agent_a_config.allow_refinement:
+        now_end = datetime.now()
+        return EntityTermExtractionUpdate(
+            entity_relation_term_extractions=EntityRelationshipTermExtraction(
+                entities=[],
+                relationships=[],
+                terms=[],
+            ),
+            log_messages=[
+                f"{now_start} -- Main - ETR Extraction,  Time taken: {now_end - now_start}"
+            ],
+        )
+
+    # first four lines duplicates from generate_initial_answer
+    question = agent_a_config.search_request.query
+    initial_search_docs = state.exploratory_search_results[:15]
+
+    # start with the entity/term/extraction
+    doc_context = format_docs(initial_search_docs)
+
+    doc_context = trim_prompt_piece(
+        agent_a_config.fast_llm.config, doc_context, ENTITY_TERM_PROMPT + question
+    )
+    msg = [
+        HumanMessage(
+            content=ENTITY_TERM_PROMPT.format(question=question, context=doc_context),
+        )
+    ]
+    fast_llm = agent_a_config.fast_llm
+    # Grader
+    llm_response = fast_llm.invoke(
+        prompt=msg,
+    )
+
+    cleaned_response = re.sub(r"```json\n|\n```", "", str(llm_response.content))
+    parsed_response = json.loads(cleaned_response)
+
+    entities = []
+    relationships = []
+    terms = []
+    for entity in parsed_response.get("retrieved_entities_relationships", {}).get(
+        "entities", {}
+    ):
+        entity_name = entity.get("entity_name", "")
+        entity_type = entity.get("entity_type", "")
+        entities.append(Entity(entity_name=entity_name, entity_type=entity_type))
+
+    for relationship in parsed_response.get("retrieved_entities_relationships", {}).get(
+        "relationships", {}
+    ):
+        relationship_name = relationship.get("relationship_name", "")
+        relationship_type = relationship.get("relationship_type", "")
+        relationship_entities = relationship.get("relationship_entities", [])
+        relationships.append(
+            Relationship(
+                relationship_name=relationship_name,
+                relationship_type=relationship_type,
+                relationship_entities=relationship_entities,
+            )
+        )
+
+    for term in parsed_response.get("retrieved_entities_relationships", {}).get(
+        "terms", {}
+    ):
+        term_name = term.get("term_name", "")
+        term_type = term.get("term_type", "")
+        term_similar_to = term.get("term_similar_to", [])
+        terms.append(
+            Term(
+                term_name=term_name,
+                term_type=term_type,
+                term_similar_to=term_similar_to,
+            )
+        )
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- MAIN - Entity term extraction,  Time taken: {now_end - now_start}"
+    )
+
+    return EntityTermExtractionUpdate(
+        entity_relation_term_extractions=EntityRelationshipTermExtraction(
+            entities=entities,
+            relationships=relationships,
+            terms=terms,
+        ),
+        log_messages=[
+            f"{now_start} -- Main - ETR Extraction,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/generate_initial_base_search_only_answer.py

@@ -0,0 +1,58 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.messages import HumanMessage
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    InitialAnswerBASEUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    trim_prompt_piece,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import INITIAL_RAG_BASE_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.utils import format_docs
+
+
+def generate_initial_base_search_only_answer(
+    state: MainState,
+    config: RunnableConfig,
+) -> InitialAnswerBASEUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------GENERATE INITIAL BASE ANSWER---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    original_question_docs = state.all_original_question_documents
+
+    model = agent_a_config.fast_llm
+
+    doc_context = format_docs(original_question_docs)
+    doc_context = trim_prompt_piece(
+        model.config, doc_context, INITIAL_RAG_BASE_PROMPT + question
+    )
+
+    msg = [
+        HumanMessage(
+            content=INITIAL_RAG_BASE_PROMPT.format(
+                question=question,
+                context=doc_context,
+            )
+        )
+    ]
+
+    # Grader
+    response = model.invoke(msg)
+    answer = response.pretty_repr()
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INITIAL BASE ANSWER END---\n\n"
+    )
+
+    return InitialAnswerBASEUpdate(initial_base_answer=answer)

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/generate_refined_answer.py

@@ -0,0 +1,335 @@
+from datetime import datetime
+from typing import Any
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_content
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    AgentRefinedMetrics,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import get_query_info
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import (
+    remove_document_citations,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    RefinedAnswerUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    get_prompt_enrichment_components,
+)
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    trim_prompt_piece,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import InferenceSection
+from onyx.agents.agent_search.shared_graph_utils.models import RefinedAgentStats
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import REVISED_RAG_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    REVISED_RAG_PROMPT_NO_SUB_QUESTIONS,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    SUB_QUESTION_ANSWER_TEMPLATE,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import UNKNOWN_ANSWER
+from onyx.agents.agent_search.shared_graph_utils.utils import (
+    dispatch_main_answer_stop_info,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import format_docs
+from onyx.agents.agent_search.shared_graph_utils.utils import parse_question_id
+from onyx.chat.models import AgentAnswerPiece
+from onyx.chat.models import ExtendedToolResponse
+from onyx.configs.agent_configs import AGENT_MAX_ANSWER_CONTEXT_DOCS
+from onyx.configs.agent_configs import AGENT_MIN_ORIG_QUESTION_DOCS
+from onyx.tools.tool_implementations.search.search_tool import yield_search_responses
+
+
+def generate_refined_answer(
+    state: MainState, config: RunnableConfig
+) -> RefinedAnswerUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------GENERATE REFINED ANSWER---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = agent_a_config.search_request.query
+    prompt_enrichment_components = get_prompt_enrichment_components(agent_a_config)
+
+    persona_contextualized_prompt = (
+        prompt_enrichment_components.persona_prompts.contextualized_prompt
+    )
+
+    initial_documents = state.documents
+    refined_documents = state.refined_documents
+    sub_questions_cited_docs = state.cited_docs
+    all_original_question_documents = state.all_original_question_documents
+
+    consolidated_context_docs: list[InferenceSection] = sub_questions_cited_docs
+
+    counter = 0
+    for original_doc_number, original_doc in enumerate(all_original_question_documents):
+        if original_doc_number not in sub_questions_cited_docs:
+            if (
+                counter <= AGENT_MIN_ORIG_QUESTION_DOCS
+                or len(consolidated_context_docs)
+                < 1.5
+                * AGENT_MAX_ANSWER_CONTEXT_DOCS  # allow for larger context in refinement
+            ):
+                consolidated_context_docs.append(original_doc)
+                counter += 1
+
+    # sort docs by their scores - though the scores refer to different questions
+    relevant_docs = dedup_inference_sections(
+        consolidated_context_docs, consolidated_context_docs
+    )
+
+    query_info = get_query_info(state.original_question_retrieval_results)
+    if agent_a_config.search_tool is None:
+        raise ValueError("search_tool must be provided for agentic search")
+    # stream refined answer docs
+    for tool_response in yield_search_responses(
+        query=question,
+        reranked_sections=relevant_docs,
+        final_context_sections=relevant_docs,
+        search_query_info=query_info,
+        get_section_relevance=lambda: None,  # TODO: add relevance
+        search_tool=agent_a_config.search_tool,
+    ):
+        dispatch_custom_event(
+            "tool_response",
+            ExtendedToolResponse(
+                id=tool_response.id,
+                response=tool_response.response,
+                level=1,
+                level_question_nr=0,  # 0, 0 is the base question
+            ),
+        )
+
+    if len(initial_documents) > 0:
+        revision_doc_effectiveness = len(relevant_docs) / len(initial_documents)
+    elif len(refined_documents) == 0:
+        revision_doc_effectiveness = 0.0
+    else:
+        revision_doc_effectiveness = 10.0
+
+    decomp_answer_results = state.decomp_answer_results
+    # revised_answer_results = state.refined_decomp_answer_results
+
+    answered_qa_list: list[str] = []
+    decomp_questions = []
+
+    initial_good_sub_questions: list[str] = []
+    new_revised_good_sub_questions: list[str] = []
+
+    sub_question_nr = 1
+
+    for decomp_answer_result in decomp_answer_results:
+        question_level, question_nr = parse_question_id(
+            decomp_answer_result.question_id
+        )
+
+        decomp_questions.append(decomp_answer_result.question)
+        if (
+            decomp_answer_result.quality.lower().startswith("yes")
+            and len(decomp_answer_result.answer) > 0
+            and decomp_answer_result.answer != UNKNOWN_ANSWER
+        ):
+            answered_qa_list.append(
+                SUB_QUESTION_ANSWER_TEMPLATE.format(
+                    sub_question=decomp_answer_result.question,
+                    sub_answer=decomp_answer_result.answer,
+                    sub_question_nr=sub_question_nr,
+                )
+            )
+            if question_level == 0:
+                initial_good_sub_questions.append(decomp_answer_result.question)
+            else:
+                new_revised_good_sub_questions.append(decomp_answer_result.question)
+
+        sub_question_nr += 1
+
+    initial_good_sub_questions = list(set(initial_good_sub_questions))
+    new_revised_good_sub_questions = list(set(new_revised_good_sub_questions))
+    total_good_sub_questions = list(
+        set(initial_good_sub_questions + new_revised_good_sub_questions)
+    )
+    if len(initial_good_sub_questions) > 0:
+        revision_question_efficiency: float = len(total_good_sub_questions) / len(
+            initial_good_sub_questions
+        )
+    elif len(new_revised_good_sub_questions) > 0:
+        revision_question_efficiency = 10.0
+    else:
+        revision_question_efficiency = 1.0
+
+    sub_question_answer_str = "\n\n------\n\n".join(list(set(answered_qa_list)))
+
+    # original answer
+
+    initial_answer = state.initial_answer
+
+    # Determine which persona-specification prompt to use
+
+    # Determine which base prompt to use given the sub-question information
+    if len(answered_qa_list) > 0:
+        base_prompt = REVISED_RAG_PROMPT
+    else:
+        base_prompt = REVISED_RAG_PROMPT_NO_SUB_QUESTIONS
+
+    model = agent_a_config.fast_llm
+    relevant_docs_str = format_docs(relevant_docs)
+    relevant_docs_str = trim_prompt_piece(
+        model.config,
+        relevant_docs_str,
+        base_prompt
+        + question
+        + sub_question_answer_str
+        + initial_answer
+        + persona_contextualized_prompt
+        + prompt_enrichment_components.history,
+    )
+
+    msg = [
+        HumanMessage(
+            content=base_prompt.format(
+                question=question,
+                history=prompt_enrichment_components.history,
+                answered_sub_questions=remove_document_citations(
+                    sub_question_answer_str
+                ),
+                relevant_docs=relevant_docs,
+                initial_answer=remove_document_citations(initial_answer),
+                persona_specification=persona_contextualized_prompt,
+                date_prompt=prompt_enrichment_components.date_str,
+            )
+        )
+    ]
+
+    # Grader
+
+    streamed_tokens: list[str | list[str | dict[str, Any]]] = [""]
+    dispatch_timings: list[float] = []
+    for message in model.stream(msg):
+        # TODO: in principle, the answer here COULD contain images, but we don't support that yet
+        content = message.content
+        if not isinstance(content, str):
+            raise ValueError(
+                f"Expected content to be a string, but got {type(content)}"
+            )
+
+        start_stream_token = datetime.now()
+        dispatch_custom_event(
+            "refined_agent_answer",
+            AgentAnswerPiece(
+                answer_piece=content,
+                level=1,
+                level_question_nr=0,
+                answer_type="agent_level_answer",
+            ),
+        )
+        end_stream_token = datetime.now()
+        dispatch_timings.append((end_stream_token - start_stream_token).microseconds)
+        streamed_tokens.append(content)
+
+    logger.info(
+        f"Average dispatch time for refined answer: {sum(dispatch_timings) / len(dispatch_timings)}"
+    )
+    dispatch_main_answer_stop_info(1)
+    response = merge_content(*streamed_tokens)
+    answer = cast(str, response)
+
+    # refined_agent_stats = _calculate_refined_agent_stats(
+    #     state.decomp_answer_results, state.original_question_retrieval_stats
+    # )
+
+    refined_agent_stats = RefinedAgentStats(
+        revision_doc_efficiency=revision_doc_effectiveness,
+        revision_question_efficiency=revision_question_efficiency,
+    )
+
+    logger.debug(f"\n\n---INITIAL ANSWER ---\n\n Answer:\n Agent: {initial_answer}")
+    logger.debug("-" * 10)
+    logger.debug(f"\n\n---REVISED AGENT ANSWER ---\n\n Answer:\n Agent: {answer}")
+
+    logger.debug("-" * 100)
+
+    if state.initial_agent_stats:
+        initial_doc_boost_factor = state.initial_agent_stats.agent_effectiveness.get(
+            "utilized_chunk_ratio", "--"
+        )
+        initial_support_boost_factor = (
+            state.initial_agent_stats.agent_effectiveness.get("support_ratio", "--")
+        )
+        num_initial_verified_docs = state.initial_agent_stats.original_question.get(
+            "num_verified_documents", "--"
+        )
+        initial_verified_docs_avg_score = (
+            state.initial_agent_stats.original_question.get("verified_avg_score", "--")
+        )
+        initial_sub_questions_verified_docs = (
+            state.initial_agent_stats.sub_questions.get("num_verified_documents", "--")
+        )
+
+        logger.debug("INITIAL AGENT STATS")
+        logger.debug(f"Document Boost Factor: {initial_doc_boost_factor}")
+        logger.debug(f"Support Boost Factor: {initial_support_boost_factor}")
+        logger.debug(f"Originally Verified Docs: {num_initial_verified_docs}")
+        logger.debug(
+            f"Originally Verified Docs Avg Score: {initial_verified_docs_avg_score}"
+        )
+        logger.debug(
+            f"Sub-Questions Verified Docs: {initial_sub_questions_verified_docs}"
+        )
+    if refined_agent_stats:
+        logger.debug("-" * 10)
+        logger.debug("REFINED AGENT STATS")
+        logger.debug(
+            f"Revision Doc Factor: {refined_agent_stats.revision_doc_efficiency}"
+        )
+        logger.debug(
+            f"Revision Question Factor: {refined_agent_stats.revision_question_efficiency}"
+        )
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INITIAL AGENT ANSWER  END---\n\n"
+    )
+
+    agent_refined_end_time = datetime.now()
+    if state.agent_refined_start_time:
+        agent_refined_duration = (
+            agent_refined_end_time - state.agent_refined_start_time
+        ).total_seconds()
+    else:
+        agent_refined_duration = None
+
+    agent_refined_metrics = AgentRefinedMetrics(
+        refined_doc_boost_factor=refined_agent_stats.revision_doc_efficiency,
+        refined_question_boost_factor=refined_agent_stats.revision_question_efficiency,
+        duration__s=agent_refined_duration,
+    )
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- MAIN - Generate refined answer,  Time taken: {now_end - now_start}"
+    )
+
+    return RefinedAnswerUpdate(
+        refined_answer=answer,
+        refined_answer_quality=True,  # TODO: replace this with the actual check value
+        refined_agent_stats=refined_agent_stats,
+        agent_refined_end_time=agent_refined_end_time,
+        agent_refined_metrics=agent_refined_metrics,
+        log_messages=[
+            f"{now_start} -- MAIN - Generate refined answer,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/ingest_refined_answers.py

@@ -0,0 +1,41 @@
+from datetime import datetime
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    DecompAnswersUpdate,
+)
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+
+
+def ingest_refined_answers(
+    state: AnswerQuestionOutput,
+) -> DecompAnswersUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------INGEST FOLLOW UP ANSWERS---")
+
+    documents = []
+    answer_results = state.answer_results if hasattr(state, "answer_results") else []
+    for answer_result in answer_results:
+        documents.extend(answer_result.documents)
+
+    now_end = datetime.now()
+
+    logger.debug(
+        f"--------{now_end}--{now_end - now_start}--------INGEST FOLLOW UP ANSWERS END---"
+    )
+
+    return DecompAnswersUpdate(
+        # Deduping is done by the documents operator for the main graph
+        # so we might not need to dedup here
+        documents=dedup_inference_sections(documents, []),
+        decomp_answer_results=answer_results,
+        log_messages=[
+            f"{now_start} -- Main - Ingest refined answers,  Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/refined_answer_decision.py

@@ -0,0 +1,47 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    RequireRefinedAnswerUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+
+
+def refined_answer_decision(
+    state: MainState, config: RunnableConfig
+) -> RequireRefinedAnswerUpdate:
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------REFINED ANSWER DECISION---")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    if "?" in agent_a_config.search_request.query:
+        decision = False
+    else:
+        decision = True
+
+    decision = True
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- MAIN - Refined answer decision,  Time taken: {now_end - now_start}"
+    )
+    log_messages = [
+        f"{now_start} -- Main - Refined answer decision: {decision},  Time taken: {now_end - now_start}"
+    ]
+    if agent_a_config.allow_refinement:
+        return RequireRefinedAnswerUpdate(
+            require_refined_answer_eval=decision,
+            log_messages=log_messages,
+        )
+
+    else:
+        return RequireRefinedAnswerUpdate(
+            require_refined_answer_eval=False,
+            log_messages=log_messages,
+        )

backend/onyx/agents/agent_search/deep_search_a/main__graph/nodes/refined_sub_question_creation.py

@@ -0,0 +1,122 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_content
+from langchain_core.runnables import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    FollowUpSubQuestion,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import (
+    dispatch_subquestion,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.operations import logger
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    FollowUpSubQuestionsUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import MainState
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    build_history_prompt,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    DEEP_DECOMPOSE_PROMPT_WITH_ENTITIES,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import dispatch_separated
+from onyx.agents.agent_search.shared_graph_utils.utils import (
+    format_entity_term_extraction,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import make_question_id
+from onyx.tools.models import ToolCallKickoff
+
+
+def refined_sub_question_creation(
+    state: MainState, config: RunnableConfig
+) -> FollowUpSubQuestionsUpdate:
+    """ """
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    dispatch_custom_event(
+        "start_refined_answer_creation",
+        ToolCallKickoff(
+            tool_name="agent_search_1",
+            tool_args={
+                "query": agent_a_config.search_request.query,
+                "answer": state.initial_answer,
+            },
+        ),
+    )
+
+    now_start = datetime.now()
+
+    logger.info(f"--------{now_start}--------FOLLOW UP DECOMPOSE---")
+
+    agent_refined_start_time = datetime.now()
+
+    question = agent_a_config.search_request.query
+    base_answer = state.initial_answer
+    history = build_history_prompt(agent_a_config, question)
+    # get the entity term extraction dict and properly format it
+    entity_retlation_term_extractions = state.entity_relation_term_extractions
+
+    entity_term_extraction_str = format_entity_term_extraction(
+        entity_retlation_term_extractions
+    )
+
+    initial_question_answers = state.decomp_answer_results
+
+    addressed_question_list = [
+        x.question for x in initial_question_answers if "yes" in x.quality.lower()
+    ]
+
+    failed_question_list = [
+        x.question for x in initial_question_answers if "no" in x.quality.lower()
+    ]
+
+    msg = [
+        HumanMessage(
+            content=DEEP_DECOMPOSE_PROMPT_WITH_ENTITIES.format(
+                question=question,
+                history=history,
+                entity_term_extraction_str=entity_term_extraction_str,
+                base_answer=base_answer,
+                answered_sub_questions="\n - ".join(addressed_question_list),
+                failed_sub_questions="\n - ".join(failed_question_list),
+            ),
+        )
+    ]
+
+    # Grader
+    model = agent_a_config.fast_llm
+
+    streamed_tokens = dispatch_separated(model.stream(msg), dispatch_subquestion(1))
+    response = merge_content(*streamed_tokens)
+
+    if isinstance(response, str):
+        parsed_response = [q for q in response.split("\n") if q.strip() != ""]
+    else:
+        raise ValueError("LLM response is not a string")
+
+    refined_sub_question_dict = {}
+    for sub_question_nr, sub_question in enumerate(parsed_response):
+        refined_sub_question = FollowUpSubQuestion(
+            sub_question=sub_question,
+            sub_question_id=make_question_id(1, sub_question_nr + 1),
+            verified=False,
+            answered=False,
+            answer="",
+        )
+
+        refined_sub_question_dict[sub_question_nr + 1] = refined_sub_question
+
+    now_end = datetime.now()
+
+    logger.info(
+        f"{now_start} -- MAIN - Refined sub question creation,  Time taken: {now_end - now_start}"
+    )
+
+    return FollowUpSubQuestionsUpdate(
+        refined_sub_questions=refined_sub_question_dict,
+        agent_refined_start_time=agent_refined_start_time,
+    )

backend/onyx/agents/agent_search/deep_search_a/main__graph/operations.py

@@ -0,0 +1,145 @@
+import re
+from collections.abc import Callable
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.models import InitialAgentResultStats
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    QuestionAnswerResults,
+)
+from onyx.chat.models import SubQuestionPiece
+from onyx.tools.models import SearchQueryInfo
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def remove_document_citations(text: str) -> str:
+    """
+    Removes citation expressions of format '[[D1]]()' from text.
+    The number after D can vary.
+
+    Args:
+        text: Input text containing citations
+
+    Returns:
+        Text with citations removed
+    """
+    # Pattern explanation:
+    # \[\[D\d+\]\]\(\)  matches:
+    #   \[\[ - literal [[ characters
+    #   D    - literal D character
+    #   \d+  - one or more digits
+    #   \]\] - literal ]] characters
+    #   \(\) - literal () characters
+    return re.sub(r"\[\[(?:D|Q)\d+\]\]\(\)", "", text)
+
+
+def dispatch_subquestion(level: int) -> Callable[[str, int], None]:
+    def _helper(sub_question_part: str, num: int) -> None:
+        dispatch_custom_event(
+            "decomp_qs",
+            SubQuestionPiece(
+                sub_question=sub_question_part,
+                level=level,
+                level_question_nr=num,
+            ),
+        )
+
+    return _helper
+
+
+def calculate_initial_agent_stats(
+    decomp_answer_results: list[QuestionAnswerResults],
+    original_question_stats: AgentChunkStats,
+) -> InitialAgentResultStats:
+    initial_agent_result_stats: InitialAgentResultStats = InitialAgentResultStats(
+        sub_questions={},
+        original_question={},
+        agent_effectiveness={},
+    )
+
+    orig_verified = original_question_stats.verified_count
+    orig_support_score = original_question_stats.verified_avg_scores
+
+    verified_document_chunk_ids = []
+    support_scores = 0.0
+
+    for decomp_answer_result in decomp_answer_results:
+        verified_document_chunk_ids += (
+            decomp_answer_result.sub_question_retrieval_stats.verified_doc_chunk_ids
+        )
+        if (
+            decomp_answer_result.sub_question_retrieval_stats.verified_avg_scores
+            is not None
+        ):
+            support_scores += (
+                decomp_answer_result.sub_question_retrieval_stats.verified_avg_scores
+            )
+
+    verified_document_chunk_ids = list(set(verified_document_chunk_ids))
+
+    # Calculate sub-question stats
+    if (
+        verified_document_chunk_ids
+        and len(verified_document_chunk_ids) > 0
+        and support_scores is not None
+    ):
+        sub_question_stats: dict[str, float | int | None] = {
+            "num_verified_documents": len(verified_document_chunk_ids),
+            "verified_avg_score": float(support_scores / len(decomp_answer_results)),
+        }
+    else:
+        sub_question_stats = {"num_verified_documents": 0, "verified_avg_score": None}
+
+    initial_agent_result_stats.sub_questions.update(sub_question_stats)
+
+    # Get original question stats
+    initial_agent_result_stats.original_question.update(
+        {
+            "num_verified_documents": original_question_stats.verified_count,
+            "verified_avg_score": original_question_stats.verified_avg_scores,
+        }
+    )
+
+    # Calculate chunk utilization ratio
+    sub_verified = initial_agent_result_stats.sub_questions["num_verified_documents"]
+
+    chunk_ratio: float | None = None
+    if sub_verified is not None and orig_verified is not None and orig_verified > 0:
+        chunk_ratio = (float(sub_verified) / orig_verified) if sub_verified > 0 else 0.0
+    elif sub_verified is not None and sub_verified > 0:
+        chunk_ratio = 10.0
+
+    initial_agent_result_stats.agent_effectiveness["utilized_chunk_ratio"] = chunk_ratio
+
+    if (
+        orig_support_score is None
+        or orig_support_score == 0.0
+        and initial_agent_result_stats.sub_questions["verified_avg_score"] is None
+    ):
+        initial_agent_result_stats.agent_effectiveness["support_ratio"] = None
+    elif orig_support_score is None or orig_support_score == 0.0:
+        initial_agent_result_stats.agent_effectiveness["support_ratio"] = 10
+    elif initial_agent_result_stats.sub_questions["verified_avg_score"] is None:
+        initial_agent_result_stats.agent_effectiveness["support_ratio"] = 0
+    else:
+        initial_agent_result_stats.agent_effectiveness["support_ratio"] = (
+            initial_agent_result_stats.sub_questions["verified_avg_score"]
+            / orig_support_score
+        )
+
+    return initial_agent_result_stats
+
+
+def get_query_info(results: list[QueryResult]) -> SearchQueryInfo:
+    # Use the query info from the base document retrieval
+    # TODO: see if this is the right way to do this
+    query_infos = [
+        result.query_info for result in results if result.query_info is not None
+    ]
+    if len(query_infos) == 0:
+        raise ValueError("No query info found")
+    return query_infos[0]

backend/onyx/agents/agent_search/deep_search_a/main__graph/states.py

@@ -0,0 +1,180 @@
+from datetime import datetime
+from operator import add
+from typing import Annotated
+from typing import TypedDict
+
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.core_state import CoreState
+from onyx.agents.agent_search.deep_search_a.main__graph.models import AgentBaseMetrics
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    AgentRefinedMetrics,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    FollowUpSubQuestion,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.models import (
+    ExpandedRetrievalResult,
+)
+from onyx.agents.agent_search.orchestration.states import ToolCallUpdate
+from onyx.agents.agent_search.orchestration.states import ToolChoiceInput
+from onyx.agents.agent_search.orchestration.states import ToolChoiceUpdate
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    EntityRelationshipTermExtraction,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import InitialAgentResultStats
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    QuestionAnswerResults,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import RefinedAgentStats
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_question_answer_results,
+)
+from onyx.context.search.models import InferenceSection
+
+### States ###
+
+## Update States
+
+
+class LoggerUpdate(BaseModel):
+    log_messages: Annotated[list[str], add] = []
+
+
+class RefinedAgentStartStats(BaseModel):
+    agent_refined_start_time: datetime | None = None
+
+
+class RefinedAgentEndStats(BaseModel):
+    agent_refined_end_time: datetime | None = None
+    agent_refined_metrics: AgentRefinedMetrics = AgentRefinedMetrics()
+
+
+class BaseDecompUpdate(RefinedAgentStartStats, RefinedAgentEndStats):
+    agent_start_time: datetime = datetime.now()
+    previous_history: str = ""
+    initial_decomp_questions: list[str] = []
+
+
+class ExploratorySearchUpdate(LoggerUpdate):
+    exploratory_search_results: list[InferenceSection] = []
+    previous_history_summary: str = ""
+
+
+class AnswerComparison(LoggerUpdate):
+    refined_answer_improvement_eval: bool = False
+
+
+class RoutingDecision(LoggerUpdate):
+    routing_decision: str = ""
+
+
+# Not used in current graph
+class InitialAnswerBASEUpdate(BaseModel):
+    initial_base_answer: str = ""
+
+
+class InitialAnswerUpdate(LoggerUpdate):
+    initial_answer: str = ""
+    initial_agent_stats: InitialAgentResultStats | None = None
+    generated_sub_questions: list[str] = []
+    agent_base_end_time: datetime | None = None
+    agent_base_metrics: AgentBaseMetrics | None = None
+
+
+class RefinedAnswerUpdate(RefinedAgentEndStats, LoggerUpdate):
+    refined_answer: str = ""
+    refined_agent_stats: RefinedAgentStats | None = None
+    refined_answer_quality: bool = False
+
+
+class InitialAnswerQualityUpdate(LoggerUpdate):
+    initial_answer_quality_eval: bool = False
+
+
+class RequireRefinedAnswerUpdate(LoggerUpdate):
+    require_refined_answer_eval: bool = True
+
+
+class DecompAnswersUpdate(LoggerUpdate):
+    documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    context_documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    cited_docs: Annotated[
+        list[InferenceSection], dedup_inference_sections
+    ] = []  # cited docs from sub-answers are used for answer context
+    decomp_answer_results: Annotated[
+        list[QuestionAnswerResults], dedup_question_answer_results
+    ] = []
+
+
+class FollowUpDecompAnswersUpdate(LoggerUpdate):
+    refined_documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    refined_decomp_answer_results: Annotated[list[QuestionAnswerResults], add] = []
+
+
+class ExpandedRetrievalUpdate(LoggerUpdate):
+    all_original_question_documents: Annotated[
+        list[InferenceSection], dedup_inference_sections
+    ]
+    original_question_retrieval_results: list[QueryResult] = []
+    original_question_retrieval_stats: AgentChunkStats = AgentChunkStats()
+
+
+class EntityTermExtractionUpdate(LoggerUpdate):
+    entity_relation_term_extractions: EntityRelationshipTermExtraction = (
+        EntityRelationshipTermExtraction()
+    )
+
+
+class FollowUpSubQuestionsUpdate(RefinedAgentStartStats):
+    refined_sub_questions: dict[int, FollowUpSubQuestion] = {}
+
+
+## Graph Input State
+## Graph Input State
+
+
+class MainInput(CoreState):
+    pass
+
+
+## Graph State
+
+
+class MainState(
+    # This includes the core state
+    MainInput,
+    ToolChoiceInput,
+    ToolCallUpdate,
+    ToolChoiceUpdate,
+    BaseDecompUpdate,
+    InitialAnswerUpdate,
+    InitialAnswerBASEUpdate,
+    DecompAnswersUpdate,
+    ExpandedRetrievalUpdate,
+    EntityTermExtractionUpdate,
+    InitialAnswerQualityUpdate,
+    RequireRefinedAnswerUpdate,
+    FollowUpSubQuestionsUpdate,
+    FollowUpDecompAnswersUpdate,
+    RefinedAnswerUpdate,
+    RefinedAgentStartStats,
+    RefinedAgentEndStats,
+    RoutingDecision,
+    AnswerComparison,
+    ExploratorySearchUpdate,
+):
+    # expanded_retrieval_result: Annotated[list[ExpandedRetrievalResult], add]
+    base_raw_search_result: Annotated[list[ExpandedRetrievalResult], add]
+
+
+## Graph Output State - presently not used
+
+
+class MainOutput(TypedDict):
+    log_messages: list[str]

backend/onyx/agents/agent_search/deep_search_a/refinement__consolidate_sub_answers__subgraph/edges.py

@@ -0,0 +1,28 @@
+from collections.abc import Hashable
+from datetime import datetime
+
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalInput,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def send_to_expanded_refined_retrieval(state: AnswerQuestionInput) -> Send | Hashable:
+    logger.debug("sending to expanded retrieval for follow up question via edge")
+    datetime.now()
+    return Send(
+        "refined_sub_question_expanded_retrieval",
+        ExpandedRetrievalInput(
+            question=state.question,
+            sub_question_id=state.question_id,
+            base_search=False,
+            log_messages=[f"{datetime.now()} -- Sending to expanded retrieval"],
+        ),
+    )

backend/onyx/agents/agent_search/deep_search_a/refinement__consolidate_sub_answers__subgraph/graph_builder.py

@@ -0,0 +1,123 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.answer_check import (
+    answer_check,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.answer_generation import (
+    answer_generation,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.format_answer import (
+    format_answer,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.nodes.ingest_retrieval import (
+    ingest_retrieval,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionInput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionOutput,
+)
+from onyx.agents.agent_search.deep_search_a.initial__individual_sub_answer__subgraph.states import (
+    AnswerQuestionState,
+)
+from onyx.agents.agent_search.deep_search_a.refinement__consolidate_sub_answers__subgraph.edges import (
+    send_to_expanded_refined_retrieval,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.graph_builder import (
+    expanded_retrieval_graph_builder,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def answer_refined_query_graph_builder() -> StateGraph:
+    graph = StateGraph(
+        state_schema=AnswerQuestionState,
+        input=AnswerQuestionInput,
+        output=AnswerQuestionOutput,
+    )
+
+    ### Add nodes ###
+
+    expanded_retrieval = expanded_retrieval_graph_builder().compile()
+    graph.add_node(
+        node="refined_sub_question_expanded_retrieval",
+        action=expanded_retrieval,
+    )
+    graph.add_node(
+        node="refined_sub_answer_check",
+        action=answer_check,
+    )
+    graph.add_node(
+        node="refined_sub_answer_generation",
+        action=answer_generation,
+    )
+    graph.add_node(
+        node="format_refined_sub_answer",
+        action=format_answer,
+    )
+    graph.add_node(
+        node="ingest_refined_retrieval",
+        action=ingest_retrieval,
+    )
+
+    ### Add edges ###
+
+    graph.add_conditional_edges(
+        source=START,
+        path=send_to_expanded_refined_retrieval,
+        path_map=["refined_sub_question_expanded_retrieval"],
+    )
+    graph.add_edge(
+        start_key="refined_sub_question_expanded_retrieval",
+        end_key="ingest_refined_retrieval",
+    )
+    graph.add_edge(
+        start_key="ingest_refined_retrieval",
+        end_key="refined_sub_answer_generation",
+    )
+    graph.add_edge(
+        start_key="refined_sub_answer_generation",
+        end_key="refined_sub_answer_check",
+    )
+    graph.add_edge(
+        start_key="refined_sub_answer_check",
+        end_key="format_refined_sub_answer",
+    )
+    graph.add_edge(
+        start_key="format_refined_sub_answer",
+        end_key=END,
+    )
+
+    return graph
+
+
+if __name__ == "__main__":
+    from onyx.db.engine import get_session_context_manager
+    from onyx.llm.factory import get_default_llms
+    from onyx.context.search.models import SearchRequest
+
+    graph = answer_refined_query_graph_builder()
+    compiled_graph = graph.compile()
+    primary_llm, fast_llm = get_default_llms()
+    search_request = SearchRequest(
+        query="what can you do with onyx or danswer?",
+    )
+    with get_session_context_manager() as db_session:
+        inputs = AnswerQuestionInput(
+            question="what can you do with onyx?",
+            question_id="0_0",
+            log_messages=[],
+        )
+        for thing in compiled_graph.stream(
+            input=inputs,
+            # debug=True,
+            # subgraphs=True,
+        ):
+            logger.debug(thing)
+        # output = compiled_graph.invoke(inputs)
+        #  logger.debug(output)

backend/onyx/agents/agent_search/deep_search_a/refinement__consolidate_sub_answers__subgraph/models.py

@@ -0,0 +1,19 @@
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.context.search.models import InferenceSection
+
+### Models ###
+
+
+class AnswerRetrievalStats(BaseModel):
+    answer_retrieval_stats: dict[str, float | int]
+
+
+class QuestionAnswerResults(BaseModel):
+    question: str
+    answer: str
+    quality: str
+    # expanded_retrieval_results: list[QueryResult]
+    documents: list[InferenceSection]
+    sub_question_retrieval_stats: AgentChunkStats

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/edges.py

@@ -0,0 +1,37 @@
+from collections.abc import Hashable
+from typing import cast
+
+from langchain_core.runnables.config import RunnableConfig
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalState,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    RetrievalInput,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+
+
+def parallel_retrieval_edge(
+    state: ExpandedRetrievalState, config: RunnableConfig
+) -> list[Send | Hashable]:
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = state.question if state.question else agent_a_config.search_request.query
+
+    query_expansions = (
+        state.expanded_queries if state.expanded_queries else [] + [question]
+    )
+    return [
+        Send(
+            "doc_retrieval",
+            RetrievalInput(
+                query_to_retrieve=query,
+                question=question,
+                base_search=False,
+                sub_question_id=state.sub_question_id,
+                log_messages=[],
+            ),
+        )
+        for query in query_expansions
+    ]

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/graph_builder.py

@@ -0,0 +1,147 @@
+from langgraph.graph import END
+from langgraph.graph import START
+from langgraph.graph import StateGraph
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.edges import (
+    parallel_retrieval_edge,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.doc_reranking import (
+    doc_reranking,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.doc_retrieval import (
+    doc_retrieval,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.doc_verification import (
+    doc_verification,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.dummy import (
+    dummy,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.expand_queries import (
+    expand_queries,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.format_results import (
+    format_results,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.nodes.verification_kickoff import (
+    verification_kickoff,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalInput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalOutput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalState,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import get_test_config
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def expanded_retrieval_graph_builder() -> StateGraph:
+    graph = StateGraph(
+        state_schema=ExpandedRetrievalState,
+        input=ExpandedRetrievalInput,
+        output=ExpandedRetrievalOutput,
+    )
+
+    ### Add nodes ###
+
+    graph.add_node(
+        node="expand_queries",
+        action=expand_queries,
+    )
+
+    graph.add_node(
+        node="dummy",
+        action=dummy,
+    )
+
+    graph.add_node(
+        node="doc_retrieval",
+        action=doc_retrieval,
+    )
+    graph.add_node(
+        node="verification_kickoff",
+        action=verification_kickoff,
+    )
+    graph.add_node(
+        node="doc_verification",
+        action=doc_verification,
+    )
+    graph.add_node(
+        node="doc_reranking",
+        action=doc_reranking,
+    )
+    graph.add_node(
+        node="format_results",
+        action=format_results,
+    )
+
+    ### Add edges ###
+    graph.add_edge(
+        start_key=START,
+        end_key="expand_queries",
+    )
+    graph.add_edge(
+        start_key="expand_queries",
+        end_key="dummy",
+    )
+
+    graph.add_conditional_edges(
+        source="dummy",
+        path=parallel_retrieval_edge,
+        path_map=["doc_retrieval"],
+    )
+    graph.add_edge(
+        start_key="doc_retrieval",
+        end_key="verification_kickoff",
+    )
+    graph.add_edge(
+        start_key="doc_verification",
+        end_key="doc_reranking",
+    )
+    graph.add_edge(
+        start_key="doc_reranking",
+        end_key="format_results",
+    )
+    graph.add_edge(
+        start_key="format_results",
+        end_key=END,
+    )
+
+    return graph
+
+
+if __name__ == "__main__":
+    from onyx.db.engine import get_session_context_manager
+    from onyx.llm.factory import get_default_llms
+    from onyx.context.search.models import SearchRequest
+
+    graph = expanded_retrieval_graph_builder()
+    compiled_graph = graph.compile()
+    primary_llm, fast_llm = get_default_llms()
+    search_request = SearchRequest(
+        query="what can you do with onyx or danswer?",
+    )
+
+    with get_session_context_manager() as db_session:
+        agent_a_config, search_tool = get_test_config(
+            db_session, primary_llm, fast_llm, search_request
+        )
+        inputs = ExpandedRetrievalInput(
+            question="what can you do with onyx?",
+            base_search=False,
+            sub_question_id=None,
+            log_messages=[],
+        )
+        for thing in compiled_graph.stream(
+            input=inputs,
+            config={"configurable": {"config": agent_a_config}},
+            # debug=True,
+            subgraphs=True,
+        ):
+            logger.debug(thing)

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/models.py

@@ -0,0 +1,12 @@
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.context.search.models import InferenceSection
+
+
+class ExpandedRetrievalResult(BaseModel):
+    expanded_queries_results: list[QueryResult] = []
+    reranked_documents: list[InferenceSection] = []
+    context_documents: list[InferenceSection] = []
+    sub_question_retrieval_stats: AgentChunkStats = AgentChunkStats()

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/doc_reranking.py

@@ -0,0 +1,96 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.operations import (
+    logger,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    DocRerankingUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalState,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.calculations import get_fit_scores
+from onyx.agents.agent_search.shared_graph_utils.models import RetrievalFitStats
+from onyx.configs.agent_configs import AGENT_RERANKING_MAX_QUERY_RETRIEVAL_RESULTS
+from onyx.configs.agent_configs import AGENT_RERANKING_STATS
+from onyx.context.search.models import InferenceSection
+from onyx.context.search.models import SearchRequest
+from onyx.context.search.pipeline import retrieval_preprocessing
+from onyx.context.search.postprocessing.postprocessing import rerank_sections
+from onyx.db.engine import get_session_context_manager
+
+
+def doc_reranking(
+    state: ExpandedRetrievalState, config: RunnableConfig
+) -> DocRerankingUpdate:
+    now_start = datetime.now()
+    verified_documents = state.verified_documents
+
+    # Rerank post retrieval and verification. First, create a search query
+    # then create the list of reranked sections
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    question = state.question if state.question else agent_a_config.search_request.query
+    if agent_a_config.search_tool is None:
+        raise ValueError("search_tool must be provided for agentic search")
+    with get_session_context_manager() as db_session:
+        # we ignore some of the user specified fields since this search is
+        # internal to agentic search, but we still want to pass through
+        # persona (for stuff like document sets) and rerank settings
+        # (to not make an unnecessary db call).
+        search_request = SearchRequest(
+            query=question,
+            persona=agent_a_config.search_request.persona,
+            rerank_settings=agent_a_config.search_request.rerank_settings,
+        )
+        _search_query = retrieval_preprocessing(
+            search_request=search_request,
+            user=agent_a_config.search_tool.user,  # bit of a hack
+            llm=agent_a_config.fast_llm,
+            db_session=db_session,
+        )
+
+    # skip section filtering
+
+    if (
+        _search_query.rerank_settings
+        and _search_query.rerank_settings.rerank_model_name
+        and _search_query.rerank_settings.num_rerank > 0
+        and len(verified_documents) > 0
+    ):
+        if len(verified_documents) > 1:
+            reranked_documents = rerank_sections(
+                _search_query,
+                verified_documents,
+            )
+        else:
+            num = "No" if len(verified_documents) == 0 else "One"
+            logger.warning(f"{num} verified document(s) found, skipping reranking")
+            reranked_documents = verified_documents
+    else:
+        logger.warning("No reranking settings found, using unranked documents")
+        reranked_documents = verified_documents
+
+    if AGENT_RERANKING_STATS:
+        fit_scores = get_fit_scores(verified_documents, reranked_documents)
+    else:
+        fit_scores = RetrievalFitStats(fit_score_lift=0, rerank_effect=0, fit_scores={})
+
+    # TODO: stream deduped docs here, or decide to use search tool ranking/verification
+    now_end = datetime.now()
+    logger.info(
+        f"{now_start} -- Expanded Retrieval - Reranking - Time taken: {now_end - now_start}"
+    )
+    return DocRerankingUpdate(
+        reranked_documents=[
+            doc for doc in reranked_documents if type(doc) == InferenceSection
+        ][:AGENT_RERANKING_MAX_QUERY_RETRIEVAL_RESULTS],
+        sub_question_retrieval_stats=fit_scores,
+        log_messages=[
+            f"{now_start} -- Expanded Retrieval - Reranking - Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/doc_retrieval.py

@@ -0,0 +1,110 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.operations import (
+    logger,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    DocRetrievalUpdate,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    RetrievalInput,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.calculations import get_fit_scores
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.configs.agent_configs import AGENT_MAX_QUERY_RETRIEVAL_RESULTS
+from onyx.configs.agent_configs import AGENT_RETRIEVAL_STATS
+from onyx.context.search.models import InferenceSection
+from onyx.db.engine import get_session_context_manager
+from onyx.tools.models import SearchQueryInfo
+from onyx.tools.tool_implementations.search.search_tool import (
+    SEARCH_RESPONSE_SUMMARY_ID,
+)
+from onyx.tools.tool_implementations.search.search_tool import SearchResponseSummary
+
+
+def doc_retrieval(state: RetrievalInput, config: RunnableConfig) -> DocRetrievalUpdate:
+    """
+    Retrieve documents
+
+    Args:
+        state (RetrievalInput): Primary state + the query to retrieve
+        config (RunnableConfig): Configuration containing ProSearchConfig
+
+    Updates:
+        expanded_retrieval_results: list[ExpandedRetrievalResult]
+        retrieved_documents: list[InferenceSection]
+    """
+    now_start = datetime.now()
+    query_to_retrieve = state.query_to_retrieve
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    search_tool = agent_a_config.search_tool
+
+    retrieved_docs: list[InferenceSection] = []
+    if not query_to_retrieve.strip():
+        logger.warning("Empty query, skipping retrieval")
+        now_end = datetime.now()
+        return DocRetrievalUpdate(
+            expanded_retrieval_results=[],
+            retrieved_documents=[],
+            log_messages=[
+                f"{now_start} -- Expanded Retrieval - Retrieval - Empty Query - Time taken: {now_end - now_start}"
+            ],
+        )
+
+    query_info = None
+    if search_tool is None:
+        raise ValueError("search_tool must be provided for agentic search")
+    # new db session to avoid concurrency issues
+    with get_session_context_manager() as db_session:
+        for tool_response in search_tool.run(
+            query=query_to_retrieve,
+            force_no_rerank=True,
+            alternate_db_session=db_session,
+        ):
+            # get retrieved docs to send to the rest of the graph
+            if tool_response.id == SEARCH_RESPONSE_SUMMARY_ID:
+                response = cast(SearchResponseSummary, tool_response.response)
+                retrieved_docs = response.top_sections
+                query_info = SearchQueryInfo(
+                    predicted_search=response.predicted_search,
+                    final_filters=response.final_filters,
+                    recency_bias_multiplier=response.recency_bias_multiplier,
+                )
+                break
+
+    retrieved_docs = retrieved_docs[:AGENT_MAX_QUERY_RETRIEVAL_RESULTS]
+    pre_rerank_docs = retrieved_docs
+    if search_tool.search_pipeline is not None:
+        pre_rerank_docs = (
+            search_tool.search_pipeline._retrieved_sections or retrieved_docs
+        )
+
+    if AGENT_RETRIEVAL_STATS:
+        fit_scores = get_fit_scores(
+            pre_rerank_docs,
+            retrieved_docs,
+        )
+    else:
+        fit_scores = None
+
+    expanded_retrieval_result = QueryResult(
+        query=query_to_retrieve,
+        search_results=retrieved_docs,
+        stats=fit_scores,
+        query_info=query_info,
+    )
+    now_end = datetime.now()
+    logger.info(
+        f"{now_start} -- Expanded Retrieval - Retrieval - Time taken: {now_end - now_start}"
+    )
+    return DocRetrievalUpdate(
+        expanded_retrieval_results=[expanded_retrieval_result],
+        retrieved_documents=retrieved_docs,
+        log_messages=[
+            f"{now_start} -- Expanded Retrieval - Retrieval - Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/doc_verification.py

@@ -0,0 +1,60 @@
+from typing import cast
+
+from langchain_core.messages import HumanMessage
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    DocVerificationInput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    DocVerificationUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.agent_prompt_ops import (
+    trim_prompt_piece,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import VERIFIER_PROMPT
+
+
+def doc_verification(
+    state: DocVerificationInput, config: RunnableConfig
+) -> DocVerificationUpdate:
+    """
+    Check whether the document is relevant for the original user question
+
+    Args:
+        state (DocVerificationInput): The current state
+        config (RunnableConfig): Configuration containing ProSearchConfig
+
+    Updates:
+        verified_documents: list[InferenceSection]
+    """
+
+    question = state.question
+    doc_to_verify = state.doc_to_verify
+    document_content = doc_to_verify.combined_content
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    fast_llm = agent_a_config.fast_llm
+
+    document_content = trim_prompt_piece(
+        fast_llm.config, document_content, VERIFIER_PROMPT + question
+    )
+
+    msg = [
+        HumanMessage(
+            content=VERIFIER_PROMPT.format(
+                question=question, document_content=document_content
+            )
+        )
+    ]
+
+    response = fast_llm.invoke(msg)
+
+    verified_documents = []
+    if isinstance(response.content, str) and "yes" in response.content.lower():
+        verified_documents.append(doc_to_verify)
+
+    return DocVerificationUpdate(
+        verified_documents=verified_documents,
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/dummy.py

@@ -0,0 +1,16 @@
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalState,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    QueryExpansionUpdate,
+)
+
+
+def dummy(
+    state: ExpandedRetrievalState, config: RunnableConfig
+) -> QueryExpansionUpdate:
+    return QueryExpansionUpdate(
+        expanded_queries=state.expanded_queries,
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/expand_queries.py

@@ -0,0 +1,74 @@
+from datetime import datetime
+from typing import cast
+
+from langchain_core.messages import HumanMessage
+from langchain_core.messages import merge_message_runs
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.operations import (
+    dispatch_subquery,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.operations import (
+    logger,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalInput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    QueryExpansionUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    REWRITE_PROMPT_MULTI_ORIGINAL,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import dispatch_separated
+from onyx.agents.agent_search.shared_graph_utils.utils import parse_question_id
+
+
+def expand_queries(
+    state: ExpandedRetrievalInput, config: RunnableConfig
+) -> QueryExpansionUpdate:
+    # Sometimes we want to expand the original question, sometimes we want to expand a sub-question.
+    # When we are running this node on the original question, no question is explictly passed in.
+    # Instead, we use the original question from the search request.
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    now_start = datetime.now()
+    question = (
+        state.question
+        if hasattr(state, "question")
+        else agent_a_config.search_request.query
+    )
+    llm = agent_a_config.fast_llm
+    chat_session_id = agent_a_config.chat_session_id
+    sub_question_id = state.sub_question_id
+    if sub_question_id is None:
+        level, question_nr = 0, 0
+    else:
+        level, question_nr = parse_question_id(sub_question_id)
+
+    if chat_session_id is None:
+        raise ValueError("chat_session_id must be provided for agent search")
+
+    msg = [
+        HumanMessage(
+            content=REWRITE_PROMPT_MULTI_ORIGINAL.format(question=question),
+        )
+    ]
+
+    llm_response_list = dispatch_separated(
+        llm.stream(prompt=msg), dispatch_subquery(level, question_nr)
+    )
+
+    llm_response = merge_message_runs(llm_response_list, chunk_separator="")[0].content
+
+    rewritten_queries = llm_response.split("\n")
+    now_end = datetime.now()
+    logger.info(
+        f"{now_start} -- Expanded Retrieval - Query Expansion - Time taken: {now_end - now_start}"
+    )
+    return QueryExpansionUpdate(
+        expanded_queries=rewritten_queries,
+        log_messages=[
+            f"{now_start} -- Expanded Retrieval - Query Expansion - Time taken: {now_end - now_start}"
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/format_results.py

@@ -0,0 +1,84 @@
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.models import (
+    ExpandedRetrievalResult,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.operations import (
+    calculate_sub_question_retrieval_stats,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalState,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalUpdate,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.utils import parse_question_id
+from onyx.chat.models import ExtendedToolResponse
+from onyx.tools.tool_implementations.search.search_tool import yield_search_responses
+
+
+def format_results(
+    state: ExpandedRetrievalState, config: RunnableConfig
+) -> ExpandedRetrievalUpdate:
+    level, question_nr = parse_question_id(state.sub_question_id or "0_0")
+    query_infos = [
+        result.query_info
+        for result in state.expanded_retrieval_results
+        if result.query_info is not None
+    ]
+    if len(query_infos) == 0:
+        raise ValueError("No query info found")
+
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    # main question docs will be sent later after aggregation and deduping with sub-question docs
+
+    reranked_documents = state.reranked_documents
+
+    if not (level == 0 and question_nr == 0):
+        if len(reranked_documents) == 0:
+            # The sub-question is used as the last query. If no verified documents are found, stream
+            # the top 3 for that one. We may want to revisit this.
+            reranked_documents = state.expanded_retrieval_results[-1].search_results[:3]
+
+        if agent_a_config.search_tool is None:
+            raise ValueError("search_tool must be provided for agentic search")
+        for tool_response in yield_search_responses(
+            query=state.question,
+            reranked_sections=state.retrieved_documents,  # TODO: rename params. (sections pre-merging here.)
+            final_context_sections=reranked_documents,
+            search_query_info=query_infos[0],  # TODO: handle differing query infos?
+            get_section_relevance=lambda: None,  # TODO: add relevance
+            search_tool=agent_a_config.search_tool,
+        ):
+            dispatch_custom_event(
+                "tool_response",
+                ExtendedToolResponse(
+                    id=tool_response.id,
+                    response=tool_response.response,
+                    level=level,
+                    level_question_nr=question_nr,
+                ),
+            )
+    sub_question_retrieval_stats = calculate_sub_question_retrieval_stats(
+        verified_documents=state.verified_documents,
+        expanded_retrieval_results=state.expanded_retrieval_results,
+    )
+
+    if sub_question_retrieval_stats is None:
+        sub_question_retrieval_stats = AgentChunkStats()
+    # else:
+    #    sub_question_retrieval_stats = [sub_question_retrieval_stats]
+
+    return ExpandedRetrievalUpdate(
+        expanded_retrieval_result=ExpandedRetrievalResult(
+            expanded_queries_results=state.expanded_retrieval_results,
+            reranked_documents=reranked_documents,
+            context_documents=state.reranked_documents,
+            sub_question_retrieval_stats=sub_question_retrieval_stats,
+        ),
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/nodes/verification_kickoff.py

@@ -0,0 +1,44 @@
+from typing import cast
+from typing import Literal
+
+from langchain_core.runnables.config import RunnableConfig
+from langgraph.types import Command
+from langgraph.types import Send
+
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    DocVerificationInput,
+)
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.states import (
+    ExpandedRetrievalState,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+
+
+def verification_kickoff(
+    state: ExpandedRetrievalState,
+    config: RunnableConfig,
+) -> Command[Literal["doc_verification"]]:
+    documents = state.retrieved_documents
+    agent_a_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    verification_question = (
+        state.question
+        if hasattr(state, "question")
+        else agent_a_config.search_request.query
+    )
+    sub_question_id = state.sub_question_id
+    return Command(
+        update={},
+        goto=[
+            Send(
+                node="doc_verification",
+                arg=DocVerificationInput(
+                    doc_to_verify=doc,
+                    question=verification_question,
+                    base_search=False,
+                    sub_question_id=sub_question_id,
+                    log_messages=[],
+                ),
+            )
+            for doc in documents
+        ],
+    )

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/operations.py

@@ -0,0 +1,97 @@
+from collections import defaultdict
+from collections.abc import Callable
+
+import numpy as np
+from langchain_core.callbacks.manager import dispatch_custom_event
+
+from onyx.agents.agent_search.shared_graph_utils.models import AgentChunkStats
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.chat.models import SubQueryPiece
+from onyx.context.search.models import InferenceSection
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def dispatch_subquery(level: int, question_nr: int) -> Callable[[str, int], None]:
+    def helper(token: str, num: int) -> None:
+        dispatch_custom_event(
+            "subqueries",
+            SubQueryPiece(
+                sub_query=token,
+                level=level,
+                level_question_nr=question_nr,
+                query_id=num,
+            ),
+        )
+
+    return helper
+
+
+def calculate_sub_question_retrieval_stats(
+    verified_documents: list[InferenceSection],
+    expanded_retrieval_results: list[QueryResult],
+) -> AgentChunkStats:
+    chunk_scores: dict[str, dict[str, list[int | float]]] = defaultdict(
+        lambda: defaultdict(list)
+    )
+
+    for expanded_retrieval_result in expanded_retrieval_results:
+        for doc in expanded_retrieval_result.search_results:
+            doc_chunk_id = f"{doc.center_chunk.document_id}_{doc.center_chunk.chunk_id}"
+            if doc.center_chunk.score is not None:
+                chunk_scores[doc_chunk_id]["score"].append(doc.center_chunk.score)
+
+    verified_doc_chunk_ids = [
+        f"{verified_document.center_chunk.document_id}_{verified_document.center_chunk.chunk_id}"
+        for verified_document in verified_documents
+    ]
+    dismissed_doc_chunk_ids = []
+
+    raw_chunk_stats_counts: dict[str, int] = defaultdict(int)
+    raw_chunk_stats_scores: dict[str, float] = defaultdict(float)
+    for doc_chunk_id, chunk_data in chunk_scores.items():
+        if doc_chunk_id in verified_doc_chunk_ids:
+            raw_chunk_stats_counts["verified_count"] += 1
+
+            valid_chunk_scores = [
+                score for score in chunk_data["score"] if score is not None
+            ]
+            raw_chunk_stats_scores["verified_scores"] += float(
+                np.mean(valid_chunk_scores)
+            )
+        else:
+            raw_chunk_stats_counts["rejected_count"] += 1
+            valid_chunk_scores = [
+                score for score in chunk_data["score"] if score is not None
+            ]
+            raw_chunk_stats_scores["rejected_scores"] += float(
+                np.mean(valid_chunk_scores)
+            )
+            dismissed_doc_chunk_ids.append(doc_chunk_id)
+
+    if raw_chunk_stats_counts["verified_count"] == 0:
+        verified_avg_scores = 0.0
+    else:
+        verified_avg_scores = raw_chunk_stats_scores["verified_scores"] / float(
+            raw_chunk_stats_counts["verified_count"]
+        )
+
+    rejected_scores = raw_chunk_stats_scores.get("rejected_scores", None)
+    if rejected_scores is not None:
+        rejected_avg_scores = rejected_scores / float(
+            raw_chunk_stats_counts["rejected_count"]
+        )
+    else:
+        rejected_avg_scores = None
+
+    chunk_stats = AgentChunkStats(
+        verified_count=raw_chunk_stats_counts["verified_count"],
+        verified_avg_scores=verified_avg_scores,
+        rejected_count=raw_chunk_stats_counts["rejected_count"],
+        rejected_avg_scores=rejected_avg_scores,
+        verified_doc_chunk_ids=verified_doc_chunk_ids,
+        dismissed_doc_chunk_ids=dismissed_doc_chunk_ids,
+    )
+
+    return chunk_stats

backend/onyx/agents/agent_search/deep_search_a/util__expanded_retrieval__subgraph/states.py

@@ -0,0 +1,91 @@
+from operator import add
+from typing import Annotated
+
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.core_state import SubgraphCoreState
+from onyx.agents.agent_search.deep_search_a.util__expanded_retrieval__subgraph.models import (
+    ExpandedRetrievalResult,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import QueryResult
+from onyx.agents.agent_search.shared_graph_utils.models import RetrievalFitStats
+from onyx.agents.agent_search.shared_graph_utils.operators import (
+    dedup_inference_sections,
+)
+from onyx.context.search.models import InferenceSection
+
+
+### States ###
+
+## Graph Input State
+
+
+class ExpandedRetrievalInput(SubgraphCoreState):
+    question: str = ""
+    base_search: bool = False
+    sub_question_id: str | None = None
+
+
+## Update/Return States
+
+
+class QueryExpansionUpdate(BaseModel):
+    expanded_queries: list[str] = ["aaa", "bbb"]
+    log_messages: list[str] = []
+
+
+class DocVerificationUpdate(BaseModel):
+    verified_documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+
+
+class DocRetrievalUpdate(BaseModel):
+    expanded_retrieval_results: Annotated[list[QueryResult], add] = []
+    retrieved_documents: Annotated[
+        list[InferenceSection], dedup_inference_sections
+    ] = []
+    log_messages: list[str] = []
+
+
+class DocRerankingUpdate(BaseModel):
+    reranked_documents: Annotated[list[InferenceSection], dedup_inference_sections] = []
+    sub_question_retrieval_stats: RetrievalFitStats | None = None
+    log_messages: list[str] = []
+
+
+class ExpandedRetrievalUpdate(BaseModel):
+    expanded_retrieval_result: ExpandedRetrievalResult
+
+
+## Graph Output State
+
+
+class ExpandedRetrievalOutput(BaseModel):
+    expanded_retrieval_result: ExpandedRetrievalResult = ExpandedRetrievalResult()
+    base_expanded_retrieval_result: ExpandedRetrievalResult = ExpandedRetrievalResult()
+    log_messages: list[str] = []
+
+
+## Graph State
+
+
+class ExpandedRetrievalState(
+    # This includes the core state
+    ExpandedRetrievalInput,
+    QueryExpansionUpdate,
+    DocRetrievalUpdate,
+    DocVerificationUpdate,
+    DocRerankingUpdate,
+    ExpandedRetrievalOutput,
+):
+    pass
+
+
+## Conditional Input States
+
+
+class DocVerificationInput(ExpandedRetrievalInput):
+    doc_to_verify: InferenceSection
+
+
+class RetrievalInput(ExpandedRetrievalInput):
+    query_to_retrieve: str = ""

backend/onyx/agents/agent_search/models.py

@@ -0,0 +1,101 @@
+from uuid import UUID
+
+from pydantic import BaseModel
+from pydantic import model_validator
+from sqlalchemy.orm import Session
+
+from onyx.agents.agent_search.shared_graph_utils.models import PersonaExpressions
+from onyx.chat.prompt_builder.answer_prompt_builder import AnswerPromptBuilder
+from onyx.context.search.models import SearchRequest
+from onyx.file_store.utils import InMemoryChatFile
+from onyx.llm.interfaces import LLM
+from onyx.tools.force import ForceUseTool
+from onyx.tools.tool import Tool
+from onyx.tools.tool_implementations.search.search_tool import SearchTool
+
+
+class AgentSearchConfig(BaseModel):
+    """
+    Configuration for the Agent Search feature.
+    """
+
+    # The search request that was used to generate the Pro Search
+    search_request: SearchRequest
+
+    primary_llm: LLM
+    fast_llm: LLM
+
+    # Whether to force use of a tool, or to
+    # force tool args IF the tool is used
+    force_use_tool: ForceUseTool
+
+    # contains message history for the current chat session
+    # has the following (at most one is non-None)
+    # message_history: list[PreviousMessage] | None = None
+    # single_message_history: str | None = None
+    prompt_builder: AnswerPromptBuilder
+
+    search_tool: SearchTool | None = None
+
+    use_agentic_search: bool = False
+
+    # For persisting agent search data
+    chat_session_id: UUID | None = None
+
+    # The message ID of the user message that triggered the Pro Search
+    message_id: int | None = None
+
+    # Whether to persistence data for Agentic Search (turned off for testing)
+    use_agentic_persistence: bool = True
+
+    # The database session for Agentic Search
+    db_session: Session | None = None
+
+    # Whether to perform initial search to inform decomposition
+    # perform_initial_search_path_decision: bool = True
+
+    # Whether to perform initial search to inform decomposition
+    perform_initial_search_decomposition: bool = True
+
+    # Whether to allow creation of refinement questions (and entity extraction, etc.)
+    allow_refinement: bool = True
+
+    # Tools available for use
+    tools: list[Tool] | None = None
+
+    using_tool_calling_llm: bool = False
+
+    files: list[InMemoryChatFile] | None = None
+
+    structured_response_format: dict | None = None
+
+    skip_gen_ai_answer_generation: bool = False
+
+    @model_validator(mode="after")
+    def validate_db_session(self) -> "AgentSearchConfig":
+        if self.use_agentic_persistence and self.db_session is None:
+            raise ValueError(
+                "db_session must be provided for pro search when using persistence"
+            )
+        return self
+
+    @model_validator(mode="after")
+    def validate_search_tool(self) -> "AgentSearchConfig":
+        if self.use_agentic_search and self.search_tool is None:
+            raise ValueError("search_tool must be provided for agentic search")
+        return self
+
+    class Config:
+        arbitrary_types_allowed = True
+
+
+class AgentDocumentCitations(BaseModel):
+    document_id: str
+    document_title: str
+    link: str
+
+
+class AgentPromptEnrichmentComponents(BaseModel):
+    persona_prompts: PersonaExpressions
+    history: str
+    date_str: str

backend/onyx/agents/agent_search/orchestration/nodes/basic_use_tool_response.py

@@ -0,0 +1,72 @@
+from typing import cast
+
+from langchain_core.messages import AIMessageChunk
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.basic.states import BasicOutput
+from onyx.agents.agent_search.basic.states import BasicState
+from onyx.agents.agent_search.basic.utils import process_llm_stream
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.chat.models import LlmDoc
+from onyx.tools.tool_implementations.search.search_tool import (
+    SEARCH_DOC_CONTENT_ID,
+)
+from onyx.tools.tool_implementations.search_like_tool_utils import (
+    FINAL_CONTEXT_DOCUMENTS_ID,
+)
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def basic_use_tool_response(state: BasicState, config: RunnableConfig) -> BasicOutput:
+    agent_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    structured_response_format = agent_config.structured_response_format
+    llm = agent_config.primary_llm
+    tool_choice = state.tool_choice
+    if tool_choice is None:
+        raise ValueError("Tool choice is None")
+    tool = tool_choice.tool
+    prompt_builder = agent_config.prompt_builder
+    if state.tool_call_output is None:
+        raise ValueError("Tool call output is None")
+    tool_call_output = state.tool_call_output
+    tool_call_summary = tool_call_output.tool_call_summary
+    tool_call_responses = tool_call_output.tool_call_responses
+
+    new_prompt_builder = tool.build_next_prompt(
+        prompt_builder=prompt_builder,
+        tool_call_summary=tool_call_summary,
+        tool_responses=tool_call_responses,
+        using_tool_calling_llm=agent_config.using_tool_calling_llm,
+    )
+
+    final_search_results = []
+    initial_search_results = []
+    for yield_item in tool_call_responses:
+        if yield_item.id == FINAL_CONTEXT_DOCUMENTS_ID:
+            final_search_results = cast(list[LlmDoc], yield_item.response)
+        elif yield_item.id == SEARCH_DOC_CONTENT_ID:
+            search_contexts = yield_item.response.contexts
+            for doc in search_contexts:
+                if doc.document_id not in initial_search_results:
+                    initial_search_results.append(doc)
+
+            initial_search_results = cast(list[LlmDoc], initial_search_results)
+
+    new_tool_call_chunk = AIMessageChunk(content="")
+    if not agent_config.skip_gen_ai_answer_generation:
+        stream = llm.stream(
+            prompt=new_prompt_builder.build(),
+            structured_response_format=structured_response_format,
+        )
+
+        # For now, we don't do multiple tool calls, so we ignore the tool_message
+        new_tool_call_chunk = process_llm_stream(
+            stream,
+            True,
+            final_search_results=final_search_results,
+            displayed_search_results=initial_search_results,
+        )
+
+    return BasicOutput(tool_call_chunk=new_tool_call_chunk)

backend/onyx/agents/agent_search/orchestration/nodes/llm_tool_choice.py

@@ -0,0 +1,144 @@
+from typing import cast
+from uuid import uuid4
+
+from langchain_core.messages import ToolCall
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.basic.utils import process_llm_stream
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.orchestration.states import ToolChoice
+from onyx.agents.agent_search.orchestration.states import ToolChoiceState
+from onyx.agents.agent_search.orchestration.states import ToolChoiceUpdate
+from onyx.chat.prompt_builder.answer_prompt_builder import AnswerPromptBuilder
+from onyx.chat.tool_handling.tool_response_handler import get_tool_by_name
+from onyx.chat.tool_handling.tool_response_handler import (
+    get_tool_call_for_non_tool_calling_llm_impl,
+)
+from onyx.tools.tool import Tool
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+# TODO: break this out into an implementation function
+# and a function that handles extracting the necessary fields
+# from the state and config
+# TODO: fan-out to multiple tool call nodes? Make this configurable?
+def llm_tool_choice(state: ToolChoiceState, config: RunnableConfig) -> ToolChoiceUpdate:
+    """
+    This node is responsible for calling the LLM to choose a tool. If no tool is chosen,
+    The node MAY emit an answer, depending on whether state["should_stream_answer"] is set.
+    """
+    should_stream_answer = state.should_stream_answer
+
+    agent_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    using_tool_calling_llm = agent_config.using_tool_calling_llm
+    prompt_builder = state.prompt_snapshot or agent_config.prompt_builder
+
+    llm = agent_config.primary_llm
+    skip_gen_ai_answer_generation = agent_config.skip_gen_ai_answer_generation
+
+    structured_response_format = agent_config.structured_response_format
+    tools = [tool for tool in (agent_config.tools or []) if tool.name in state.tools]
+    force_use_tool = agent_config.force_use_tool
+
+    tool, tool_args = None, None
+    if force_use_tool.force_use and force_use_tool.args is not None:
+        tool_name, tool_args = (
+            force_use_tool.tool_name,
+            force_use_tool.args,
+        )
+        tool = get_tool_by_name(tools, tool_name)
+
+    # special pre-logic for non-tool calling LLM case
+    elif not using_tool_calling_llm and tools:
+        chosen_tool_and_args = get_tool_call_for_non_tool_calling_llm_impl(
+            force_use_tool=force_use_tool,
+            tools=tools,
+            prompt_builder=prompt_builder,
+            llm=llm,
+        )
+        if chosen_tool_and_args:
+            tool, tool_args = chosen_tool_and_args
+
+    # If we have a tool and tool args, we are redy to request a tool call.
+    # This only happens if the tool call was forced or we are using a non-tool calling LLM.
+    if tool and tool_args:
+        return ToolChoiceUpdate(
+            tool_choice=ToolChoice(
+                tool=tool,
+                tool_args=tool_args,
+                id=str(uuid4()),
+            ),
+        )
+
+    # if we're skipping gen ai answer generation, we should only
+    # continue if we're forcing a tool call (which will be emitted by
+    # the tool calling llm in the stream() below)
+    if skip_gen_ai_answer_generation and not force_use_tool.force_use:
+        return ToolChoiceUpdate(
+            tool_choice=None,
+        )
+
+    built_prompt = (
+        prompt_builder.build()
+        if isinstance(prompt_builder, AnswerPromptBuilder)
+        else prompt_builder.built_prompt
+    )
+    # At this point, we are either using a tool calling LLM or we are skipping the tool call.
+    # DEBUG: good breakpoint
+    stream = llm.stream(
+        # For tool calling LLMs, we want to insert the task prompt as part of this flow, this is because the LLM
+        # may choose to not call any tools and just generate the answer, in which case the task prompt is needed.
+        prompt=built_prompt,
+        tools=[tool.tool_definition() for tool in tools] or None,
+        tool_choice=("required" if tools and force_use_tool.force_use else None),
+        structured_response_format=structured_response_format,
+    )
+
+    tool_message = process_llm_stream(
+        stream, should_stream_answer and not agent_config.skip_gen_ai_answer_generation
+    )
+
+    # If no tool calls are emitted by the LLM, we should not choose a tool
+    if len(tool_message.tool_calls) == 0:
+        logger.info("No tool calls emitted by LLM")
+        return ToolChoiceUpdate(
+            tool_choice=None,
+        )
+
+    # TODO: here we could handle parallel tool calls. Right now
+    # we just pick the first one that matches.
+    selected_tool: Tool | None = None
+    selected_tool_call_request: ToolCall | None = None
+    for tool_call_request in tool_message.tool_calls:
+        known_tools_by_name = [
+            tool for tool in tools if tool.name == tool_call_request["name"]
+        ]
+
+        if known_tools_by_name:
+            selected_tool = known_tools_by_name[0]
+            selected_tool_call_request = tool_call_request
+            break
+
+        logger.error(
+            "Tool call requested with unknown name field. \n"
+            f"tools: {tools}"
+            f"tool_call_request: {tool_call_request}"
+        )
+
+    if not selected_tool or not selected_tool_call_request:
+        raise ValueError(
+            f"Tool call attempted with tool {selected_tool}, request {selected_tool_call_request}"
+        )
+
+    logger.info(f"Selected tool: {selected_tool.name}")
+    logger.debug(f"Selected tool call request: {selected_tool_call_request}")
+
+    return ToolChoiceUpdate(
+        tool_choice=ToolChoice(
+            tool=selected_tool,
+            tool_args=selected_tool_call_request["args"],
+            id=selected_tool_call_request["id"],
+        ),
+    )

backend/onyx/agents/agent_search/orchestration/nodes/prepare_tool_input.py

@@ -0,0 +1,17 @@
+from typing import Any
+from typing import cast
+
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.orchestration.states import ToolChoiceInput
+
+
+def prepare_tool_input(state: Any, config: RunnableConfig) -> ToolChoiceInput:
+    agent_config = cast(AgentSearchConfig, config["metadata"]["config"])
+    return ToolChoiceInput(
+        # NOTE: this node is used at the top level of the agent, so we always stream
+        should_stream_answer=True,
+        prompt_snapshot=None,  # uses default prompt builder
+        tools=[tool.name for tool in (agent_config.tools or [])],
+    )

backend/onyx/agents/agent_search/orchestration/nodes/tool_call.py

@@ -0,0 +1,65 @@
+from typing import cast
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import AIMessageChunk
+from langchain_core.messages.tool import ToolCall
+from langchain_core.runnables.config import RunnableConfig
+
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.orchestration.states import ToolCallOutput
+from onyx.agents.agent_search.orchestration.states import ToolCallUpdate
+from onyx.agents.agent_search.orchestration.states import ToolChoiceUpdate
+from onyx.chat.models import AnswerPacket
+from onyx.tools.message import build_tool_message
+from onyx.tools.message import ToolCallSummary
+from onyx.tools.tool_runner import ToolRunner
+from onyx.utils.logger import setup_logger
+
+
+logger = setup_logger()
+
+
+def emit_packet(packet: AnswerPacket) -> None:
+    dispatch_custom_event("basic_response", packet)
+
+
+def tool_call(state: ToolChoiceUpdate, config: RunnableConfig) -> ToolCallUpdate:
+    """Calls the tool specified in the state and updates the state with the result"""
+
+    cast(AgentSearchConfig, config["metadata"]["config"])
+
+    tool_choice = state.tool_choice
+    if tool_choice is None:
+        raise ValueError("Cannot invoke tool call node without a tool choice")
+
+    tool = tool_choice.tool
+    tool_args = tool_choice.tool_args
+    tool_id = tool_choice.id
+    tool_runner = ToolRunner(tool, tool_args)
+    tool_kickoff = tool_runner.kickoff()
+
+    emit_packet(tool_kickoff)
+
+    tool_responses = []
+    for response in tool_runner.tool_responses():
+        tool_responses.append(response)
+        emit_packet(response)
+
+    tool_final_result = tool_runner.tool_final_result()
+    emit_packet(tool_final_result)
+
+    tool_call = ToolCall(name=tool.name, args=tool_args, id=tool_id)
+    tool_call_summary = ToolCallSummary(
+        tool_call_request=AIMessageChunk(content="", tool_calls=[tool_call]),
+        tool_call_result=build_tool_message(
+            tool_call, tool_runner.tool_message_content()
+        ),
+    )
+
+    tool_call_output = ToolCallOutput(
+        tool_call_summary=tool_call_summary,
+        tool_call_kickoff=tool_kickoff,
+        tool_call_responses=tool_responses,
+        tool_call_final_result=tool_final_result,
+    )
+    return ToolCallUpdate(tool_call_output=tool_call_output)

backend/onyx/agents/agent_search/orchestration/states.py

@@ -0,0 +1,48 @@
+from pydantic import BaseModel
+
+from onyx.chat.prompt_builder.answer_prompt_builder import PromptSnapshot
+from onyx.tools.message import ToolCallSummary
+from onyx.tools.models import ToolCallFinalResult
+from onyx.tools.models import ToolCallKickoff
+from onyx.tools.models import ToolResponse
+from onyx.tools.tool import Tool
+
+
+# TODO: adapt the tool choice/tool call to allow for parallel tool calls by
+# creating a subgraph that can be invoked in parallel via Send/Command APIs
+class ToolChoiceInput(BaseModel):
+    should_stream_answer: bool = True
+    # default to the prompt builder from the config, but
+    # allow overrides for arbitrary tool calls
+    prompt_snapshot: PromptSnapshot | None = None
+
+    # names of tools to use for tool calling. Filters the tools available in the config
+    tools: list[str] = []
+
+
+class ToolCallOutput(BaseModel):
+    tool_call_summary: ToolCallSummary
+    tool_call_kickoff: ToolCallKickoff
+    tool_call_responses: list[ToolResponse]
+    tool_call_final_result: ToolCallFinalResult
+
+
+class ToolCallUpdate(BaseModel):
+    tool_call_output: ToolCallOutput | None = None
+
+
+class ToolChoice(BaseModel):
+    tool: Tool
+    tool_args: dict
+    id: str | None
+
+    class Config:
+        arbitrary_types_allowed = True
+
+
+class ToolChoiceUpdate(BaseModel):
+    tool_choice: ToolChoice | None = None
+
+
+class ToolChoiceState(ToolChoiceUpdate, ToolChoiceInput):
+    pass

backend/onyx/agents/agent_search/run_graph.py

@@ -0,0 +1,261 @@
+import asyncio
+from collections.abc import AsyncIterable
+from collections.abc import Iterable
+from datetime import datetime
+from typing import cast
+
+from langchain_core.runnables.schema import StreamEvent
+from langgraph.graph.state import CompiledStateGraph
+
+from onyx.agents.agent_search.basic.graph_builder import basic_graph_builder
+from onyx.agents.agent_search.basic.states import BasicInput
+from onyx.agents.agent_search.deep_search_a.main__graph.graph_builder import (
+    main_graph_builder as main_graph_builder_a,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.states import (
+    MainInput as MainInput_a,
+)
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.utils import get_test_config
+from onyx.chat.models import AgentAnswerPiece
+from onyx.chat.models import AnswerPacket
+from onyx.chat.models import AnswerStream
+from onyx.chat.models import ExtendedToolResponse
+from onyx.chat.models import RefinedAnswerImprovement
+from onyx.chat.models import StreamStopInfo
+from onyx.chat.models import SubQueryPiece
+from onyx.chat.models import SubQuestionPiece
+from onyx.chat.models import ToolResponse
+from onyx.context.search.models import SearchRequest
+from onyx.db.engine import get_session_context_manager
+from onyx.tools.tool_runner import ToolCallKickoff
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+_COMPILED_GRAPH: CompiledStateGraph | None = None
+
+
+def _set_combined_token_value(
+    combined_token: str, parsed_object: AgentAnswerPiece
+) -> AgentAnswerPiece:
+    parsed_object.answer_piece = combined_token
+
+    return parsed_object
+
+
+def _parse_agent_event(
+    event: StreamEvent,
+) -> AnswerPacket | None:
+    """
+    Parse the event into a typed object.
+    Return None if we are not interested in the event.
+    """
+
+    event_type = event["event"]
+
+    # We always just yield the event data, but this piece is useful for two development reasons:
+    # 1. It's a list of the names of every place we dispatch a custom event
+    # 2. We maintain the intended types yielded by each event
+    if event_type == "on_custom_event":
+        # TODO: different AnswerStream types for different events
+        if event["name"] == "decomp_qs":
+            return cast(SubQuestionPiece, event["data"])
+        elif event["name"] == "subqueries":
+            return cast(SubQueryPiece, event["data"])
+        elif event["name"] == "sub_answers":
+            return cast(AgentAnswerPiece, event["data"])
+        elif event["name"] == "stream_finished":
+            return cast(StreamStopInfo, event["data"])
+        elif event["name"] == "initial_agent_answer":
+            return cast(AgentAnswerPiece, event["data"])
+        elif event["name"] == "refined_agent_answer":
+            return cast(AgentAnswerPiece, event["data"])
+        elif event["name"] == "start_refined_answer_creation":
+            return cast(ToolCallKickoff, event["data"])
+        elif event["name"] == "tool_response":
+            return cast(ToolResponse, event["data"])
+        elif event["name"] == "basic_response":
+            return cast(AnswerPacket, event["data"])
+        elif event["name"] == "refined_answer_improvement":
+            return cast(RefinedAnswerImprovement, event["data"])
+    return None
+
+
+# https://stackoverflow.com/questions/60226557/how-to-forcefully-close-an-async-generator
+# https://stackoverflow.com/questions/40897428/please-explain-task-was-destroyed-but-it-is-pending-after-cancelling-tasks
+task_references: set[asyncio.Task[StreamEvent]] = set()
+
+
+def _manage_async_event_streaming(
+    compiled_graph: CompiledStateGraph,
+    config: AgentSearchConfig | None,
+    graph_input: MainInput_a | BasicInput,
+) -> Iterable[StreamEvent]:
+    async def _run_async_event_stream() -> AsyncIterable[StreamEvent]:
+        message_id = config.message_id if config else None
+        async for event in compiled_graph.astream_events(
+            input=graph_input,
+            config={"metadata": {"config": config, "thread_id": str(message_id)}},
+            # debug=True,
+            # indicating v2 here deserves further scrutiny
+            version="v2",
+        ):
+            yield event
+
+    # This might be able to be simplified
+    def _yield_async_to_sync() -> Iterable[StreamEvent]:
+        loop = asyncio.new_event_loop()
+        try:
+            # Get the async generator
+            async_gen = _run_async_event_stream()
+            # Convert to AsyncIterator
+            async_iter = async_gen.__aiter__()
+            while True:
+                try:
+                    # Create a coroutine by calling anext with the async iterator
+                    next_coro = anext(async_iter)
+                    task = asyncio.ensure_future(next_coro, loop=loop)
+                    task_references.add(task)
+                    # Run the coroutine to get the next event
+                    event = loop.run_until_complete(task)
+                    yield event
+                except (StopAsyncIteration, GeneratorExit):
+                    break
+        finally:
+            try:
+                for task in task_references.pop():
+                    task.cancel()
+            except StopAsyncIteration:
+                pass
+            loop.close()
+
+    return _yield_async_to_sync()
+
+
+def run_graph(
+    compiled_graph: CompiledStateGraph,
+    config: AgentSearchConfig,
+    input: BasicInput | MainInput_a,
+) -> AnswerStream:
+    # TODO: add these to the environment
+    # config.perform_initial_search_path_decision = False
+    config.perform_initial_search_decomposition = True
+    config.allow_refinement = True
+
+    for event in _manage_async_event_streaming(
+        compiled_graph=compiled_graph, config=config, graph_input=input
+    ):
+        if not (parsed_object := _parse_agent_event(event)):
+            continue
+
+        yield parsed_object
+
+
+# TODO: call this once on startup, TBD where and if it should be gated based
+# on dev mode or not
+def load_compiled_graph() -> CompiledStateGraph:
+    global _COMPILED_GRAPH
+    if _COMPILED_GRAPH is None:
+        graph = main_graph_builder_a()
+        _COMPILED_GRAPH = graph.compile()
+    return _COMPILED_GRAPH
+
+
+def run_main_graph(
+    config: AgentSearchConfig,
+) -> AnswerStream:
+    compiled_graph = load_compiled_graph()
+    input = MainInput_a(base_question=config.search_request.query, log_messages=[])
+
+    # Agent search is not a Tool per se, but this is helpful for the frontend
+    yield ToolCallKickoff(
+        tool_name="agent_search_0",
+        tool_args={"query": config.search_request.query},
+    )
+    yield from run_graph(compiled_graph, config, input)
+
+
+# TODO: unify input types, especially prosearchconfig
+def run_basic_graph(
+    config: AgentSearchConfig,
+) -> AnswerStream:
+    graph = basic_graph_builder()
+    compiled_graph = graph.compile()
+    # TODO: unify basic input
+    input = BasicInput()
+    return run_graph(compiled_graph, config, input)
+
+
+if __name__ == "__main__":
+    from onyx.llm.factory import get_default_llms
+
+    for _ in range(1):
+        now_start = datetime.now()
+        logger.debug(f"Start at {now_start}")
+        graph = main_graph_builder_a()
+        compiled_graph = graph.compile()
+        now_end = datetime.now()
+        logger.debug(f"Graph compiled in {now_end - now_start} seconds")
+        primary_llm, fast_llm = get_default_llms()
+        search_request = SearchRequest(
+            # query="what can you do with gitlab?",
+            # query="What are the guiding principles behind the development of cockroachDB",
+            # query="What are the temperatures in Munich, Hawaii, and New York?",
+            # query="When was Washington born?",
+            # query="What is Onyx?",
+            # query="What is the difference between astronomy and astrology?",
+            query="Do a search to tell me what is the difference between astronomy and astrology?",
+        )
+        # Joachim custom persona
+
+        with get_session_context_manager() as db_session:
+            config, search_tool = get_test_config(
+                db_session, primary_llm, fast_llm, search_request
+            )
+            # search_request.persona = get_persona_by_id(1, None, db_session)
+            config.use_agentic_persistence = True
+            # config.perform_initial_search_path_decision = False
+            config.perform_initial_search_decomposition = True
+            input = MainInput_a(
+                base_question=config.search_request.query, log_messages=[]
+            )
+
+            # with open("output.txt", "w") as f:
+            tool_responses: list = []
+            for output in run_graph(compiled_graph, config, input):
+                # pass
+
+                if isinstance(output, ToolCallKickoff):
+                    pass
+                elif isinstance(output, ExtendedToolResponse):
+                    tool_responses.append(output.response)
+                    logger.info(
+                        f"   ---- ET {output.level} - {output.level_question_nr} |  "
+                    )
+                elif isinstance(output, SubQueryPiece):
+                    logger.info(
+                        f"Sq {output.level} - {output.level_question_nr} - {output.sub_query} | "
+                    )
+                elif isinstance(output, SubQuestionPiece):
+                    logger.info(
+                        f"SQ {output.level} - {output.level_question_nr} - {output.sub_question} | "
+                    )
+                elif (
+                    isinstance(output, AgentAnswerPiece)
+                    and output.answer_type == "agent_sub_answer"
+                ):
+                    logger.info(
+                        f"   ---- SA {output.level} - {output.level_question_nr} {output.answer_piece} | "
+                    )
+                elif (
+                    isinstance(output, AgentAnswerPiece)
+                    and output.answer_type == "agent_level_answer"
+                ):
+                    logger.info(
+                        f"   ---------- FA {output.level} - {output.level_question_nr}  {output.answer_piece} | "
+                    )
+                elif isinstance(output, RefinedAnswerImprovement):
+                    logger.info(
+                        f"   ---------- RE {output.refined_answer_improvement} | "
+                    )

backend/onyx/agents/agent_search/shared_graph_utils/agent_prompt_ops.py

@@ -0,0 +1,134 @@
+from langchain.schema import AIMessage
+from langchain.schema import HumanMessage
+from langchain.schema import SystemMessage
+from langchain_core.messages.tool import ToolMessage
+
+from onyx.agents.agent_search.models import AgentPromptEnrichmentComponents
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.prompts import BASE_RAG_PROMPT_v2
+from onyx.agents.agent_search.shared_graph_utils.prompts import HISTORY_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.utils import (
+    get_persona_agent_prompt_expressions,
+)
+from onyx.agents.agent_search.shared_graph_utils.utils import get_today_prompt
+from onyx.agents.agent_search.shared_graph_utils.utils import summarize_history
+from onyx.configs.agent_configs import AGENT_MAX_STATIC_HISTORY_CHAR_LENGTH
+from onyx.context.search.models import InferenceSection
+from onyx.llm.interfaces import LLMConfig
+from onyx.llm.utils import get_max_input_tokens
+from onyx.natural_language_processing.utils import get_tokenizer
+from onyx.natural_language_processing.utils import tokenizer_trim_content
+
+
+def build_sub_question_answer_prompt(
+    question: str,
+    original_question: str,
+    docs: list[InferenceSection],
+    persona_specification: str,
+    config: LLMConfig,
+) -> list[SystemMessage | HumanMessage | AIMessage | ToolMessage]:
+    system_message = SystemMessage(
+        content=persona_specification,
+    )
+
+    date_str = get_today_prompt()
+
+    docs_format_list = [
+        f"""Document Number: [D{doc_nr + 1}]\n
+                             Content: {doc.combined_content}\n\n"""
+        for doc_nr, doc in enumerate(docs)
+    ]
+
+    docs_str = "\n\n".join(docs_format_list)
+
+    docs_str = trim_prompt_piece(
+        config, docs_str, BASE_RAG_PROMPT_v2 + question + original_question + date_str
+    )
+    human_message = HumanMessage(
+        content=BASE_RAG_PROMPT_v2.format(
+            question=question,
+            original_question=original_question,
+            context=docs_str,
+            date_prompt=date_str,
+        )
+    )
+
+    return [system_message, human_message]
+
+
+def trim_prompt_piece(config: LLMConfig, prompt_piece: str, reserved_str: str) -> str:
+    # TODO: this truncating might add latency. We could do a rougher + faster check
+    # first to determine whether truncation is needed
+
+    # TODO: maybe save the tokenizer and max input tokens if this is getting called multiple times?
+    llm_tokenizer = get_tokenizer(
+        provider_type=config.model_provider,
+        model_name=config.model_name,
+    )
+
+    max_tokens = get_max_input_tokens(
+        model_provider=config.model_provider,
+        model_name=config.model_name,
+    )
+
+    # slightly conservative trimming
+    return tokenizer_trim_content(
+        content=prompt_piece,
+        desired_length=max_tokens - len(llm_tokenizer.encode(reserved_str)),
+        tokenizer=llm_tokenizer,
+    )
+
+
+def build_history_prompt(config: AgentSearchConfig, question: str) -> str:
+    prompt_builder = config.prompt_builder
+    model = config.fast_llm
+    persona_base = get_persona_agent_prompt_expressions(
+        config.search_request.persona
+    ).base_prompt
+
+    if prompt_builder is None:
+        return ""
+
+    if prompt_builder.single_message_history is not None:
+        history = prompt_builder.single_message_history
+    else:
+        history_components = []
+        previous_message_type = None
+        for message in prompt_builder.raw_message_history:
+            if "user" in message.message_type:
+                history_components.append(f"User: {message.message}\n")
+                previous_message_type = "user"
+            elif "assistant" in message.message_type:
+                # only use the last agent answer for the history
+                if previous_message_type != "assistant":
+                    history_components.append(f"You/Agent: {message.message}\n")
+                else:
+                    history_components = history_components[:-1]
+                    history_components.append(f"You/Agent: {message.message}\n")
+                previous_message_type = "assistant"
+            else:
+                continue
+        history = "\n".join(history_components)
+
+        if len(history) > AGENT_MAX_STATIC_HISTORY_CHAR_LENGTH:
+            history = summarize_history(history, question, persona_base, model)
+
+    return HISTORY_PROMPT.format(history=history) if history else ""
+
+
+def get_prompt_enrichment_components(
+    config: AgentSearchConfig,
+) -> AgentPromptEnrichmentComponents:
+    persona_prompts = get_persona_agent_prompt_expressions(
+        config.search_request.persona
+    )
+
+    history = build_history_prompt(config, config.search_request.query)
+
+    date_str = get_today_prompt()
+
+    return AgentPromptEnrichmentComponents(
+        persona_prompts=persona_prompts,
+        history=history,
+        date_str=date_str,
+    )

backend/onyx/agents/agent_search/shared_graph_utils/calculations.py

@@ -0,0 +1,98 @@
+import numpy as np
+
+from onyx.agents.agent_search.shared_graph_utils.models import RetrievalFitScoreMetrics
+from onyx.agents.agent_search.shared_graph_utils.models import RetrievalFitStats
+from onyx.chat.models import SectionRelevancePiece
+from onyx.context.search.models import InferenceSection
+from onyx.utils.logger import setup_logger
+
+logger = setup_logger()
+
+
+def unique_chunk_id(doc: InferenceSection) -> str:
+    return f"{doc.center_chunk.document_id}_{doc.center_chunk.chunk_id}"
+
+
+def calculate_rank_shift(list1: list, list2: list, top_n: int = 20) -> float:
+    shift = 0
+    for rank_first, doc_id in enumerate(list1[:top_n], 1):
+        try:
+            rank_second = list2.index(doc_id) + 1
+        except ValueError:
+            rank_second = len(list2)  # Document not found in second list
+
+        shift += np.abs(rank_first - rank_second) / np.log(1 + rank_first * rank_second)
+
+    return shift / top_n
+
+
+def get_fit_scores(
+    pre_reranked_results: list[InferenceSection],
+    post_reranked_results: list[InferenceSection] | list[SectionRelevancePiece],
+) -> RetrievalFitStats | None:
+    """
+    Calculate retrieval metrics for search purposes
+    """
+
+    if len(pre_reranked_results) == 0 or len(post_reranked_results) == 0:
+        return None
+
+    ranked_sections = {
+        "initial": pre_reranked_results,
+        "reranked": post_reranked_results,
+    }
+
+    fit_eval: RetrievalFitStats = RetrievalFitStats(
+        fit_score_lift=0,
+        rerank_effect=0,
+        fit_scores={
+            "initial": RetrievalFitScoreMetrics(scores={}, chunk_ids=[]),
+            "reranked": RetrievalFitScoreMetrics(scores={}, chunk_ids=[]),
+        },
+    )
+
+    for rank_type, docs in ranked_sections.items():
+        logger.debug(f"rank_type: {rank_type}")
+
+        for i in [1, 5, 10]:
+            fit_eval.fit_scores[rank_type].scores[str(i)] = (
+                sum(
+                    [
+                        float(doc.center_chunk.score)
+                        for doc in docs[:i]
+                        if type(doc) == InferenceSection
+                        and doc.center_chunk.score is not None
+                    ]
+                )
+                / i
+            )
+
+        fit_eval.fit_scores[rank_type].scores["fit_score"] = (
+            1
+            / 3
+            * (
+                fit_eval.fit_scores[rank_type].scores["1"]
+                + fit_eval.fit_scores[rank_type].scores["5"]
+                + fit_eval.fit_scores[rank_type].scores["10"]
+            )
+        )
+
+        fit_eval.fit_scores[rank_type].scores["fit_score"] = fit_eval.fit_scores[
+            rank_type
+        ].scores["1"]
+
+        fit_eval.fit_scores[rank_type].chunk_ids = [
+            unique_chunk_id(doc) for doc in docs if type(doc) == InferenceSection
+        ]
+
+    fit_eval.fit_score_lift = (
+        fit_eval.fit_scores["reranked"].scores["fit_score"]
+        / fit_eval.fit_scores["initial"].scores["fit_score"]
+    )
+
+    fit_eval.rerank_effect = calculate_rank_shift(
+        fit_eval.fit_scores["initial"].chunk_ids,
+        fit_eval.fit_scores["reranked"].chunk_ids,
+    )
+
+    return fit_eval

backend/onyx/agents/agent_search/shared_graph_utils/models.py

@@ -0,0 +1,123 @@
+from typing import Literal
+
+from pydantic import BaseModel
+
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    AgentAdditionalMetrics,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.models import AgentBaseMetrics
+from onyx.agents.agent_search.deep_search_a.main__graph.models import (
+    AgentRefinedMetrics,
+)
+from onyx.agents.agent_search.deep_search_a.main__graph.models import AgentTimings
+from onyx.context.search.models import InferenceSection
+from onyx.tools.models import SearchQueryInfo
+
+
+# Pydantic models for structured outputs
+class RewrittenQueries(BaseModel):
+    rewritten_queries: list[str]
+
+
+class BinaryDecision(BaseModel):
+    decision: Literal["yes", "no"]
+
+
+class BinaryDecisionWithReasoning(BaseModel):
+    reasoning: str
+    decision: Literal["yes", "no"]
+
+
+class RetrievalFitScoreMetrics(BaseModel):
+    scores: dict[str, float]
+    chunk_ids: list[str]
+
+
+class RetrievalFitStats(BaseModel):
+    fit_score_lift: float
+    rerank_effect: float
+    fit_scores: dict[str, RetrievalFitScoreMetrics]
+
+
+class AgentChunkScores(BaseModel):
+    scores: dict[str, dict[str, list[int | float]]]
+
+
+class AgentChunkStats(BaseModel):
+    verified_count: int | None = None
+    verified_avg_scores: float | None = None
+    rejected_count: int | None = None
+    rejected_avg_scores: float | None = None
+    verified_doc_chunk_ids: list[str] = []
+    dismissed_doc_chunk_ids: list[str] = []
+
+
+class InitialAgentResultStats(BaseModel):
+    sub_questions: dict[str, float | int | None]
+    original_question: dict[str, float | int | None]
+    agent_effectiveness: dict[str, float | int | None]
+
+
+class RefinedAgentStats(BaseModel):
+    revision_doc_efficiency: float | None
+    revision_question_efficiency: float | None
+
+
+class Term(BaseModel):
+    term_name: str = ""
+    term_type: str = ""
+    term_similar_to: list[str] = []
+
+
+### Models ###
+
+
+class Entity(BaseModel):
+    entity_name: str = ""
+    entity_type: str = ""
+
+
+class Relationship(BaseModel):
+    relationship_name: str = ""
+    relationship_type: str = ""
+    relationship_entities: list[str] = []
+
+
+class EntityRelationshipTermExtraction(BaseModel):
+    entities: list[Entity] = []
+    relationships: list[Relationship] = []
+    terms: list[Term] = []
+
+
+### Models ###
+
+
+class QueryResult(BaseModel):
+    query: str
+    search_results: list[InferenceSection]
+    stats: RetrievalFitStats | None
+    query_info: SearchQueryInfo | None
+
+
+class QuestionAnswerResults(BaseModel):
+    question: str
+    question_id: str
+    answer: str
+    quality: str
+    expanded_retrieval_results: list[QueryResult]
+    documents: list[InferenceSection]
+    context_documents: list[InferenceSection]
+    cited_docs: list[InferenceSection]
+    sub_question_retrieval_stats: AgentChunkStats
+
+
+class CombinedAgentMetrics(BaseModel):
+    timings: AgentTimings
+    base_metrics: AgentBaseMetrics | None
+    refined_metrics: AgentRefinedMetrics
+    additional_metrics: AgentAdditionalMetrics
+
+
+class PersonaExpressions(BaseModel):
+    contextualized_prompt: str
+    base_prompt: str

backend/onyx/agents/agent_search/shared_graph_utils/operators.py

@@ -0,0 +1,31 @@
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    QuestionAnswerResults,
+)
+from onyx.chat.prune_and_merge import _merge_sections
+from onyx.context.search.models import InferenceSection
+
+
+def dedup_inference_sections(
+    list1: list[InferenceSection], list2: list[InferenceSection]
+) -> list[InferenceSection]:
+    deduped = _merge_sections(list1 + list2)
+    return deduped
+
+
+def dedup_question_answer_results(
+    question_answer_results_1: list[QuestionAnswerResults],
+    question_answer_results_2: list[QuestionAnswerResults],
+) -> list[QuestionAnswerResults]:
+    deduped_question_answer_results: list[
+        QuestionAnswerResults
+    ] = question_answer_results_1
+    utilized_question_ids: set[str] = set(
+        [x.question_id for x in question_answer_results_1]
+    )
+
+    for question_answer_result in question_answer_results_2:
+        if question_answer_result.question_id not in utilized_question_ids:
+            deduped_question_answer_results.append(question_answer_result)
+            utilized_question_ids.add(question_answer_result.question_id)
+
+    return deduped_question_answer_results

backend/onyx/agents/agent_search/shared_graph_utils/utils.py

@@ -0,0 +1,367 @@
+import ast
+import json
+import re
+from collections.abc import Callable
+from collections.abc import Iterator
+from collections.abc import Sequence
+from datetime import datetime
+from datetime import timedelta
+from typing import Any
+from typing import cast
+from uuid import UUID
+
+from langchain_core.callbacks.manager import dispatch_custom_event
+from langchain_core.messages import BaseMessage
+from langchain_core.messages import HumanMessage
+from sqlalchemy.orm import Session
+
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.shared_graph_utils.models import (
+    EntityRelationshipTermExtraction,
+)
+from onyx.agents.agent_search.shared_graph_utils.models import PersonaExpressions
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    ASSISTANT_SYSTEM_PROMPT_DEFAULT,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    ASSISTANT_SYSTEM_PROMPT_PERSONA,
+)
+from onyx.agents.agent_search.shared_graph_utils.prompts import DATE_PROMPT
+from onyx.agents.agent_search.shared_graph_utils.prompts import (
+    HISTORY_CONTEXT_SUMMARY_PROMPT,
+)
+from onyx.chat.models import AnswerStyleConfig
+from onyx.chat.models import CitationConfig
+from onyx.chat.models import DocumentPruningConfig
+from onyx.chat.models import PromptConfig
+from onyx.chat.models import StreamStopInfo
+from onyx.chat.models import StreamStopReason
+from onyx.chat.prompt_builder.answer_prompt_builder import AnswerPromptBuilder
+from onyx.configs.chat_configs import CHAT_TARGET_CHUNK_PERCENTAGE
+from onyx.configs.chat_configs import MAX_CHUNKS_FED_TO_CHAT
+from onyx.configs.constants import DEFAULT_PERSONA_ID
+from onyx.context.search.enums import LLMEvaluationType
+from onyx.context.search.models import InferenceSection
+from onyx.context.search.models import RetrievalDetails
+from onyx.context.search.models import SearchRequest
+from onyx.db.engine import get_session_context_manager
+from onyx.db.persona import get_persona_by_id
+from onyx.db.persona import Persona
+from onyx.llm.interfaces import LLM
+from onyx.tools.force import ForceUseTool
+from onyx.tools.tool_constructor import SearchToolConfig
+from onyx.tools.tool_implementations.search.search_tool import (
+    SEARCH_RESPONSE_SUMMARY_ID,
+)
+from onyx.tools.tool_implementations.search.search_tool import SearchResponseSummary
+from onyx.tools.tool_implementations.search.search_tool import SearchTool
+
+
+def normalize_whitespace(text: str) -> str:
+    """Normalize whitespace in text to single spaces and strip leading/trailing whitespace."""
+    import re
+
+    return re.sub(r"\s+", " ", text.strip())
+
+
+# Post-processing
+def format_docs(docs: Sequence[InferenceSection]) -> str:
+    formatted_doc_list = []
+
+    for doc_nr, doc in enumerate(docs):
+        formatted_doc_list.append(f"Document D{doc_nr + 1}:\n{doc.combined_content}")
+
+    return "\n\n".join(formatted_doc_list)
+
+
+def format_docs_content_flat(docs: Sequence[InferenceSection]) -> str:
+    formatted_doc_list = []
+
+    for _, doc in enumerate(docs):
+        formatted_doc_list.append(f"\n...{doc.combined_content}\n")
+
+    return "\n\n".join(formatted_doc_list)
+
+
+def clean_and_parse_list_string(json_string: str) -> list[dict]:
+    # Remove any prefixes/labels before the actual JSON content
+    json_string = re.sub(r"^.*?(?=\[)", "", json_string, flags=re.DOTALL)
+
+    # Remove markdown code block markers and any newline prefixes
+    cleaned_string = re.sub(r"```json\n|\n```", "", json_string)
+    cleaned_string = cleaned_string.replace("\\n", " ").replace("\n", " ")
+    cleaned_string = " ".join(cleaned_string.split())
+
+    # Try parsing with json.loads first, fall back to ast.literal_eval
+    try:
+        return json.loads(cleaned_string)
+    except json.JSONDecodeError:
+        try:
+            return ast.literal_eval(cleaned_string)
+        except (ValueError, SyntaxError) as e:
+            raise ValueError(f"Failed to parse JSON string: {cleaned_string}") from e
+
+
+def clean_and_parse_json_string(json_string: str) -> dict[str, Any]:
+    # Remove markdown code block markers and any newline prefixes
+    cleaned_string = re.sub(r"```json\n|\n```", "", json_string)
+    cleaned_string = cleaned_string.replace("\\n", " ").replace("\n", " ")
+    cleaned_string = " ".join(cleaned_string.split())
+    # Parse the cleaned string into a Python dictionary
+    return json.loads(cleaned_string)
+
+
+def format_entity_term_extraction(
+    entity_term_extraction_dict: EntityRelationshipTermExtraction,
+) -> str:
+    entities = entity_term_extraction_dict.entities
+    terms = entity_term_extraction_dict.terms
+    relationships = entity_term_extraction_dict.relationships
+
+    entity_strs = ["\nEntities:\n"]
+    for entity in entities:
+        entity_str = f"{entity.entity_name} ({entity.entity_type})"
+        entity_strs.append(entity_str)
+
+    entity_str = "\n - ".join(entity_strs)
+
+    relationship_strs = ["\n\nRelationships:\n"]
+    for relationship in relationships:
+        relationship_name = relationship.relationship_name
+        relationship_type = relationship.relationship_type
+        relationship_entities = relationship.relationship_entities
+        relationship_str = (
+            f"""{relationship_name} ({relationship_type}): {relationship_entities}"""
+        )
+        relationship_strs.append(relationship_str)
+
+    relationship_str = "\n - ".join(relationship_strs)
+
+    term_strs = ["\n\nTerms:\n"]
+    for term in terms:
+        term_str = f"{term.term_name} ({term.term_type}): similar to {', '.join(term.term_similar_to)}"
+        term_strs.append(term_str)
+
+    term_str = "\n - ".join(term_strs)
+
+    return "\n".join(entity_strs + relationship_strs + term_strs)
+
+
+def _format_time_delta(time: timedelta) -> str:
+    seconds_from_start = f"{((time).seconds):03d}"
+    microseconds_from_start = f"{((time).microseconds):06d}"
+    return f"{seconds_from_start}.{microseconds_from_start}"
+
+
+def generate_log_message(
+    message: str,
+    node_start_time: datetime,
+    graph_start_time: datetime | None = None,
+) -> str:
+    current_time = datetime.now()
+
+    if graph_start_time is not None:
+        graph_time_str = _format_time_delta(current_time - graph_start_time)
+    else:
+        graph_time_str = "N/A"
+
+    node_time_str = _format_time_delta(current_time - node_start_time)
+
+    return f"{graph_time_str} ({node_time_str} s): {message}"
+
+
+def get_test_config(
+    db_session: Session,
+    primary_llm: LLM,
+    fast_llm: LLM,
+    search_request: SearchRequest,
+    use_agentic_search: bool = True,
+) -> tuple[AgentSearchConfig, SearchTool]:
+    persona = get_persona_by_id(DEFAULT_PERSONA_ID, None, db_session)
+    document_pruning_config = DocumentPruningConfig(
+        max_chunks=int(
+            persona.num_chunks
+            if persona.num_chunks is not None
+            else MAX_CHUNKS_FED_TO_CHAT
+        ),
+        max_window_percentage=CHAT_TARGET_CHUNK_PERCENTAGE,
+    )
+
+    answer_style_config = AnswerStyleConfig(
+        citation_config=CitationConfig(
+            # The docs retrieved by this flow are already relevance-filtered
+            all_docs_useful=True
+        ),
+        document_pruning_config=document_pruning_config,
+        structured_response_format=None,
+    )
+
+    search_tool_config = SearchToolConfig(
+        answer_style_config=answer_style_config,
+        document_pruning_config=document_pruning_config,
+        retrieval_options=RetrievalDetails(),  # may want to set dedupe_docs=True
+        rerank_settings=None,  # Can use this to change reranking model
+        selected_sections=None,
+        latest_query_files=None,
+        bypass_acl=False,
+    )
+
+    prompt_config = PromptConfig.from_model(persona.prompts[0])
+
+    search_tool = SearchTool(
+        db_session=db_session,
+        user=None,
+        persona=persona,
+        retrieval_options=search_tool_config.retrieval_options,
+        prompt_config=prompt_config,
+        llm=primary_llm,
+        fast_llm=fast_llm,
+        pruning_config=search_tool_config.document_pruning_config,
+        answer_style_config=search_tool_config.answer_style_config,
+        selected_sections=search_tool_config.selected_sections,
+        chunks_above=search_tool_config.chunks_above,
+        chunks_below=search_tool_config.chunks_below,
+        full_doc=search_tool_config.full_doc,
+        evaluation_type=(
+            LLMEvaluationType.BASIC
+            if persona.llm_relevance_filter
+            else LLMEvaluationType.SKIP
+        ),
+        rerank_settings=search_tool_config.rerank_settings,
+        bypass_acl=search_tool_config.bypass_acl,
+    )
+
+    config = AgentSearchConfig(
+        search_request=search_request,
+        primary_llm=primary_llm,
+        fast_llm=fast_llm,
+        search_tool=search_tool,
+        force_use_tool=ForceUseTool(force_use=False, tool_name=""),
+        prompt_builder=AnswerPromptBuilder(
+            user_message=HumanMessage(content=search_request.query),
+            message_history=[],
+            llm_config=primary_llm.config,
+            raw_user_query=search_request.query,
+            raw_user_uploaded_files=[],
+        ),
+        # chat_session_id=UUID("123e4567-e89b-12d3-a456-426614174000"),
+        chat_session_id=UUID("edda10d5-6cef-45d8-acfb-39317552a1f4"),  # Joachim
+        # chat_session_id=UUID("d1acd613-2692-4bc3-9d65-c6d3da62e58e"),  # Evan
+        message_id=1,
+        use_agentic_persistence=True,
+        db_session=db_session,
+        tools=[search_tool],
+        use_agentic_search=use_agentic_search,
+    )
+
+    return config, search_tool
+
+
+def get_persona_agent_prompt_expressions(persona: Persona | None) -> PersonaExpressions:
+    if persona is None:
+        persona_prompt = ASSISTANT_SYSTEM_PROMPT_DEFAULT
+        persona_base = ""
+    else:
+        persona_base = "\n".join([x.system_prompt for x in persona.prompts])
+
+        persona_prompt = ASSISTANT_SYSTEM_PROMPT_PERSONA.format(
+            persona_prompt=persona_base
+        )
+    return PersonaExpressions(
+        contextualized_prompt=persona_prompt, base_prompt=persona_base
+    )
+
+
+def make_question_id(level: int, question_nr: int) -> str:
+    return f"{level}_{question_nr}"
+
+
+def parse_question_id(question_id: str) -> tuple[int, int]:
+    level, question_nr = question_id.split("_")
+    return int(level), int(question_nr)
+
+
+def _dispatch_nonempty(
+    content: str, dispatch_event: Callable[[str, int], None], num: int
+) -> None:
+    if content != "":
+        dispatch_event(content, num)
+
+
+def dispatch_separated(
+    token_itr: Iterator[BaseMessage],
+    dispatch_event: Callable[[str, int], None],
+    sep: str = "\n",
+) -> list[str | list[str | dict[str, Any]]]:
+    num = 1
+    streamed_tokens: list[str | list[str | dict[str, Any]]] = [""]
+    for message in token_itr:
+        content = cast(str, message.content)
+        if sep in content:
+            sub_question_parts = content.split(sep)
+            _dispatch_nonempty(sub_question_parts[0], dispatch_event, num)
+            num += 1
+            _dispatch_nonempty(
+                "".join(sub_question_parts[1:]).strip(), dispatch_event, num
+            )
+        else:
+            _dispatch_nonempty(content, dispatch_event, num)
+        streamed_tokens.append(content)
+
+    return streamed_tokens
+
+
+def dispatch_main_answer_stop_info(level: int) -> None:
+    stop_event = StreamStopInfo(
+        stop_reason=StreamStopReason.FINISHED,
+        stream_type="main_answer",
+        level=level,
+    )
+    dispatch_custom_event("stream_finished", stop_event)
+
+
+def get_today_prompt() -> str:
+    return DATE_PROMPT.format(date=datetime.now().strftime("%A, %B %d, %Y"))
+
+
+def retrieve_search_docs(
+    search_tool: SearchTool, question: str
+) -> list[InferenceSection]:
+    retrieved_docs: list[InferenceSection] = []
+
+    # new db session to avoid concurrency issues
+    with get_session_context_manager() as db_session:
+        for tool_response in search_tool.run(
+            query=question,
+            force_no_rerank=True,
+            alternate_db_session=db_session,
+        ):
+            # get retrieved docs to send to the rest of the graph
+            if tool_response.id == SEARCH_RESPONSE_SUMMARY_ID:
+                response = cast(SearchResponseSummary, tool_response.response)
+                retrieved_docs = response.top_sections
+                break
+
+    return retrieved_docs
+
+
+def get_answer_citation_ids(answer_str: str) -> list[int]:
+    citation_ids = re.findall(r"\[\[D(\d+)\]\]", answer_str)
+    return list(set([(int(id) - 1) for id in citation_ids]))
+
+
+def summarize_history(
+    history: str, question: str, persona_specification: str, model: LLM
+) -> str:
+    history_context_prompt = HISTORY_CONTEXT_SUMMARY_PROMPT.format(
+        persona_specification=persona_specification, question=question, history=history
+    )
+
+    history_response = model.invoke(history_context_prompt)
+
+    if isinstance(history_response.content, str):
+        history_context_response_str = history_response.content
+    else:
+        history_context_response_str = ""
+
+    return history_context_response_str

backend/onyx/chat/answer.py

@@ -1,110 +1,81 @@
+from collections import defaultdict
 from collections.abc import Callable
-from collections.abc import Iterator
-from uuid import uuid4
+from uuid import UUID
 
-from langchain.schema.messages import BaseMessage
-from langchain_core.messages import AIMessageChunk
-from langchain_core.messages import ToolCall
+from sqlalchemy.orm import Session
 
-from onyx.chat.llm_response_handler import LLMResponseHandlerManager
-from onyx.chat.models import AnswerQuestionPossibleReturn
+from onyx.agents.agent_search.models import AgentSearchConfig
+from onyx.agents.agent_search.run_graph import run_basic_graph
+from onyx.agents.agent_search.run_graph import run_main_graph
+from onyx.chat.models import AgentAnswerPiece
+from onyx.chat.models import AnswerPacket
+from onyx.chat.models import AnswerStream
 from onyx.chat.models import AnswerStyleConfig
 from onyx.chat.models import CitationInfo
 from onyx.chat.models import OnyxAnswerPiece
-from onyx.chat.models import PromptConfig
+from onyx.chat.models import StreamStopInfo
+from onyx.chat.models import StreamStopReason
 from onyx.chat.prompt_builder.answer_prompt_builder import AnswerPromptBuilder
-from onyx.chat.prompt_builder.answer_prompt_builder import default_build_system_message
-from onyx.chat.prompt_builder.answer_prompt_builder import default_build_user_message
-from onyx.chat.prompt_builder.answer_prompt_builder import LLMCall
-from onyx.chat.stream_processing.answer_response_handler import (
-    CitationResponseHandler,
-)
-from onyx.chat.stream_processing.answer_response_handler import (
-    DummyAnswerResponseHandler,
-)
-from onyx.chat.stream_processing.utils import (
-    map_document_id_order,
-)
-from onyx.chat.tool_handling.tool_response_handler import ToolResponseHandler
+from onyx.chat.tool_handling.tool_response_handler import get_tool_by_name
+from onyx.configs.constants import BASIC_KEY
+from onyx.context.search.models import SearchRequest
 from onyx.file_store.utils import InMemoryChatFile
 from onyx.llm.interfaces import LLM
-from onyx.llm.models import PreviousMessage
 from onyx.natural_language_processing.utils import get_tokenizer
 from onyx.tools.force import ForceUseTool
-from onyx.tools.models import ToolResponse
 from onyx.tools.tool import Tool
 from onyx.tools.tool_implementations.search.search_tool import SearchTool
-from onyx.tools.tool_runner import ToolCallKickoff
 from onyx.tools.utils import explicit_tool_calling_supported
 from onyx.utils.logger import setup_logger
 
-
 logger = setup_logger()
 
 
-AnswerStream = Iterator[AnswerQuestionPossibleReturn | ToolCallKickoff | ToolResponse]
-
-
 class Answer:
     def __init__(
         self,
-        question: str,
+        prompt_builder: AnswerPromptBuilder,
         answer_style_config: AnswerStyleConfig,
         llm: LLM,
-        prompt_config: PromptConfig,
+        fast_llm: LLM,
         force_use_tool: ForceUseTool,
-        # must be the same length as `docs`. If None, all docs are considered "relevant"
-        message_history: list[PreviousMessage] | None = None,
-        single_message_history: str | None = None,
+        search_request: SearchRequest,
+        chat_session_id: UUID,
+        current_agent_message_id: int,
         # newly passed in files to include as part of this question
         # TODO THIS NEEDS TO BE HANDLED
         latest_query_files: list[InMemoryChatFile] | None = None,
-        files: list[InMemoryChatFile] | None = None,
         tools: list[Tool] | None = None,
         # NOTE: for native tool-calling, this is only supported by OpenAI atm,
         #       but we only support them anyways
         # if set to True, then never use the LLMs provided tool-calling functonality
         skip_explicit_tool_calling: bool = False,
-        # Returns the full document sections text from the search tool
-        return_contexts: bool = False,
         skip_gen_ai_answer_generation: bool = False,
         is_connected: Callable[[], bool] | None = None,
+        db_session: Session | None = None,
+        use_agentic_search: bool = False,
+        use_agentic_persistence: bool = True,
     ) -> None:
-        if single_message_history and message_history:
-            raise ValueError(
-                "Cannot provide both `message_history` and `single_message_history`"
-            )
-
-        self.question = question
         self.is_connected: Callable[[], bool] | None = is_connected
 
         self.latest_query_files = latest_query_files or []
-        self.file_id_to_file = {file.file_id: file for file in (files or [])}
 
         self.tools = tools or []
         self.force_use_tool = force_use_tool
-
-        self.message_history = message_history or []
         # used for QA flow where we only want to send a single message
-        self.single_message_history = single_message_history
 
         self.answer_style_config = answer_style_config
-        self.prompt_config = prompt_config
 
         self.llm = llm
+        self.fast_llm = fast_llm
         self.llm_tokenizer = get_tokenizer(
             provider_type=llm.config.model_provider,
             model_name=llm.config.model_name,
         )
 
-        self._final_prompt: list[BaseMessage] | None = None
-
         self._streamed_output: list[str] | None = None
-        self._processed_stream: (
-            list[AnswerQuestionPossibleReturn | ToolResponse | ToolCallKickoff] | None
-        ) = None
+        self._processed_stream: (list[AnswerPacket] | None) = None
 
-        self._return_contexts = return_contexts
         self.skip_gen_ai_answer_generation = skip_gen_ai_answer_generation
         self._is_cancelled = False
 
@@ -115,167 +86,76 @@ class Answer:
             and not skip_explicit_tool_calling
         )
 
+        search_tools = [tool for tool in (tools or []) if isinstance(tool, SearchTool)]
+        search_tool: SearchTool | None = None
+
+        if len(search_tools) > 1:
+            # TODO: handle multiple search tools
+            raise ValueError("Multiple search tools found")
+        elif len(search_tools) == 1:
+            search_tool = search_tools[0]
+
+        using_tool_calling_llm = explicit_tool_calling_supported(
+            llm.config.model_provider, llm.config.model_name
+        )
+        self.agent_search_config = AgentSearchConfig(
+            search_request=search_request,
+            primary_llm=llm,
+            fast_llm=fast_llm,
+            search_tool=search_tool,
+            force_use_tool=force_use_tool,
+            use_agentic_search=use_agentic_search,
+            chat_session_id=chat_session_id,
+            message_id=current_agent_message_id,
+            use_agentic_persistence=use_agentic_persistence,
+            allow_refinement=True,
+            db_session=db_session,
+            prompt_builder=prompt_builder,
+            tools=tools,
+            using_tool_calling_llm=using_tool_calling_llm,
+            files=latest_query_files,
+            structured_response_format=answer_style_config.structured_response_format,
+            skip_gen_ai_answer_generation=skip_gen_ai_answer_generation,
+        )
+        self.db_session = db_session
+
     def _get_tools_list(self) -> list[Tool]:
         if not self.force_use_tool.force_use:
             return self.tools
 
-        tool = next(
-            (t for t in self.tools if t.name == self.force_use_tool.tool_name), None
-        )
-        if tool is None:
-            raise RuntimeError(f"Tool '{self.force_use_tool.tool_name}' not found")
+        tool = get_tool_by_name(self.tools, self.force_use_tool.tool_name)
 
-        logger.info(
-            f"Forcefully using tool='{tool.name}'"
-            + (
-                f" with args='{self.force_use_tool.args}'"
-                if self.force_use_tool.args is not None
-                else ""
-            )
+        args_str = (
+            f" with args='{self.force_use_tool.args}'"
+            if self.force_use_tool.args
+            else ""
         )
+        logger.info(f"Forcefully using tool='{tool.name}'{args_str}")
         return [tool]
 
-    def _handle_specified_tool_call(
-        self, llm_calls: list[LLMCall], tool: Tool, tool_args: dict
-    ) -> AnswerStream:
-        current_llm_call = llm_calls[-1]
-
-        # make a dummy tool handler
-        tool_handler = ToolResponseHandler([tool])
-
-        dummy_tool_call_chunk = AIMessageChunk(content="")
-        dummy_tool_call_chunk.tool_calls = [
-            ToolCall(name=tool.name, args=tool_args, id=str(uuid4()))
-        ]
-
-        response_handler_manager = LLMResponseHandlerManager(
-            tool_handler, DummyAnswerResponseHandler(), self.is_cancelled
-        )
-        yield from response_handler_manager.handle_llm_response(
-            iter([dummy_tool_call_chunk])
-        )
-
-        new_llm_call = response_handler_manager.next_llm_call(current_llm_call)
-        if new_llm_call:
-            yield from self._get_response(llm_calls + [new_llm_call])
-        else:
-            raise RuntimeError("Tool call handler did not return a new LLM call")
-
-    def _get_response(self, llm_calls: list[LLMCall]) -> AnswerStream:
-        current_llm_call = llm_calls[-1]
-
-        # handle the case where no decision has to be made; we simply run the tool
-        if (
-            current_llm_call.force_use_tool.force_use
-            and current_llm_call.force_use_tool.args is not None
-        ):
-            tool_name, tool_args = (
-                current_llm_call.force_use_tool.tool_name,
-                current_llm_call.force_use_tool.args,
-            )
-            tool = next(
-                (t for t in current_llm_call.tools if t.name == tool_name), None
-            )
-            if not tool:
-                raise RuntimeError(f"Tool '{tool_name}' not found")
-
-            yield from self._handle_specified_tool_call(llm_calls, tool, tool_args)
-            return
-
-        # special pre-logic for non-tool calling LLM case
-        if not self.using_tool_calling_llm and current_llm_call.tools:
-            chosen_tool_and_args = (
-                ToolResponseHandler.get_tool_call_for_non_tool_calling_llm(
-                    current_llm_call, self.llm
-                )
-            )
-            if chosen_tool_and_args:
-                tool, tool_args = chosen_tool_and_args
-                yield from self._handle_specified_tool_call(llm_calls, tool, tool_args)
-                return
-
-        # if we're skipping gen ai answer generation, we should break
-        # out unless we're forcing a tool call. If we don't, we might generate an
-        # answer, which is a no-no!
-        if (
-            self.skip_gen_ai_answer_generation
-            and not current_llm_call.force_use_tool.force_use
-        ):
-            return
-
-        # set up "handlers" to listen to the LLM response stream and
-        # feed back the processed results + handle tool call requests
-        # + figure out what the next LLM call should be
-        tool_call_handler = ToolResponseHandler(current_llm_call.tools)
-
-        final_search_results, displayed_search_results = SearchTool.get_search_result(
-            current_llm_call
-        ) or ([], [])
-
-        answer_handler = CitationResponseHandler(
-            context_docs=final_search_results,
-            final_doc_id_to_rank_map=map_document_id_order(final_search_results),
-            display_doc_id_to_rank_map=map_document_id_order(displayed_search_results),
-        )
-
-        response_handler_manager = LLMResponseHandlerManager(
-            tool_call_handler, answer_handler, self.is_cancelled
-        )
-
-        # DEBUG: good breakpoint
-        stream = self.llm.stream(
-            # For tool calling LLMs, we want to insert the task prompt as part of this flow, this is because the LLM
-            # may choose to not call any tools and just generate the answer, in which case the task prompt is needed.
-            prompt=current_llm_call.prompt_builder.build(),
-            tools=[tool.tool_definition() for tool in current_llm_call.tools] or None,
-            tool_choice=(
-                "required"
-                if current_llm_call.tools and current_llm_call.force_use_tool.force_use
-                else None
-            ),
-            structured_response_format=self.answer_style_config.structured_response_format,
-        )
-        yield from response_handler_manager.handle_llm_response(stream)
-
-        new_llm_call = response_handler_manager.next_llm_call(current_llm_call)
-        if new_llm_call:
-            yield from self._get_response(llm_calls + [new_llm_call])
-
     @property
     def processed_streamed_output(self) -> AnswerStream:
         if self._processed_stream is not None:
             yield from self._processed_stream
             return
 
-        prompt_builder = AnswerPromptBuilder(
-            user_message=default_build_user_message(
-                user_query=self.question,
-                prompt_config=self.prompt_config,
-                files=self.latest_query_files,
-                single_message_history=self.single_message_history,
-            ),
-            message_history=self.message_history,
-            llm_config=self.llm.config,
-            raw_user_query=self.question,
-            raw_user_uploaded_files=self.latest_query_files or [],
-            single_message_history=self.single_message_history,
+        run_langgraph = (
+            run_main_graph
+            if self.agent_search_config.use_agentic_search
+            else run_basic_graph
         )
-        prompt_builder.update_system_prompt(
-            default_build_system_message(self.prompt_config)
-        )
-        llm_call = LLMCall(
-            prompt_builder=prompt_builder,
-            tools=self._get_tools_list(),
-            force_use_tool=self.force_use_tool,
-            files=self.latest_query_files,
-            tool_call_info=[],
-            using_tool_calling_llm=self.using_tool_calling_llm,
+        stream = run_langgraph(
+            self.agent_search_config,
         )
 
         processed_stream = []
-        for processed_packet in self._get_response([llm_call]):
-            processed_stream.append(processed_packet)
-            yield processed_packet
+        for packet in stream:
+            if self.is_cancelled():
+                packet = StreamStopInfo(stop_reason=StreamStopReason.CANCELLED)
+                yield packet
+                break
+            processed_stream.append(packet)
+            yield packet
 
         self._processed_stream = processed_stream
 
@@ -283,20 +163,57 @@ class Answer:
     def llm_answer(self) -> str:
         answer = ""
         for packet in self.processed_streamed_output:
-            if isinstance(packet, OnyxAnswerPiece) and packet.answer_piece:
+            # handle basic answer flow, plus level 0 agent answer flow
+            # since level 0 is the first answer the user sees and therefore the
+            # child message of the user message in the db (so it is handled
+            # like a basic flow answer)
+            if (isinstance(packet, OnyxAnswerPiece) and packet.answer_piece) or (
+                isinstance(packet, AgentAnswerPiece)
+                and packet.answer_piece
+                and packet.answer_type == "agent_level_answer"
+                and packet.level == 0
+            ):
                 answer += packet.answer_piece
 
         return answer
 
+    def llm_answer_by_level(self) -> dict[int, str]:
+        answer_by_level: dict[int, str] = defaultdict(str)
+        for packet in self.processed_streamed_output:
+            if (
+                isinstance(packet, AgentAnswerPiece)
+                and packet.answer_piece
+                and packet.answer_type == "agent_level_answer"
+            ):
+                answer_by_level[packet.level] += packet.answer_piece
+            elif isinstance(packet, OnyxAnswerPiece) and packet.answer_piece:
+                answer_by_level[BASIC_KEY[0]] += packet.answer_piece
+        return answer_by_level
+
     @property
     def citations(self) -> list[CitationInfo]:
         citations: list[CitationInfo] = []
         for packet in self.processed_streamed_output:
-            if isinstance(packet, CitationInfo):
+            if isinstance(packet, CitationInfo) and packet.level is None:
                 citations.append(packet)
 
         return citations
 
+    # TODO: replace tuple of ints with SubQuestionId EVERYWHERE
+    def citations_by_subquestion(self) -> dict[tuple[int, int], list[CitationInfo]]:
+        citations_by_subquestion: dict[
+            tuple[int, int], list[CitationInfo]
+        ] = defaultdict(list)
+        for packet in self.processed_streamed_output:
+            if isinstance(packet, CitationInfo):
+                if packet.level_question_nr is not None and packet.level is not None:
+                    citations_by_subquestion[
+                        (packet.level, packet.level_question_nr)
+                    ].append(packet)
+                elif packet.level is None:
+                    citations_by_subquestion[BASIC_KEY].append(packet)
+        return citations_by_subquestion
+
     def is_cancelled(self) -> bool:
         if self._is_cancelled:
             return True

backend/onyx/chat/chat_utils.py

@@ -48,6 +48,8 @@ def prepare_chat_message_request(
     retrieval_details: RetrievalDetails | None,
     rerank_settings: RerankingDetails | None,
     db_session: Session,
+    use_agentic_search: bool = False,
+    skip_gen_ai_answer_generation: bool = False,
 ) -> CreateChatMessageRequest:
     # Typically used for one shot flows like SlackBot or non-chat API endpoint use cases
     new_chat_session = create_chat_session(
@@ -72,6 +74,8 @@ def prepare_chat_message_request(
         search_doc_ids=None,
         retrieval_options=retrieval_details,
         rerank_settings=rerank_settings,
+        use_agentic_search=use_agentic_search,
+        skip_gen_ai_answer_generation=skip_gen_ai_answer_generation,
     )
 
 

backend/onyx/chat/llm_response_handler.py

@@ -9,25 +9,37 @@ from onyx.chat.models import StreamStopInfo
 from onyx.chat.models import StreamStopReason
 from onyx.chat.prompt_builder.answer_prompt_builder import LLMCall
 from onyx.chat.stream_processing.answer_response_handler import AnswerResponseHandler
+from onyx.chat.stream_processing.answer_response_handler import (
+    DummyAnswerResponseHandler,
+)
 from onyx.chat.tool_handling.tool_response_handler import ToolResponseHandler
 
 
 class LLMResponseHandlerManager:
+    """
+    This class is responsible for postprocessing the LLM response stream.
+    In particular, we:
+    1. handle the tool call requests
+    2. handle citations
+    3. pass through answers generated by the LLM
+    4. Stop yielding if the client disconnects
+    """
+
     def __init__(
         self,
-        tool_handler: ToolResponseHandler,
-        answer_handler: AnswerResponseHandler,
+        tool_handler: ToolResponseHandler | None,
+        answer_handler: AnswerResponseHandler | None,
         is_cancelled: Callable[[], bool],
     ):
-        self.tool_handler = tool_handler
-        self.answer_handler = answer_handler
+        self.tool_handler = tool_handler or ToolResponseHandler([])
+        self.answer_handler = answer_handler or DummyAnswerResponseHandler()
         self.is_cancelled = is_cancelled
 
     def handle_llm_response(
         self,
         stream: Iterator[BaseMessage],
     ) -> Generator[ResponsePart, None, None]:
-        all_messages: list[BaseMessage] = []
+        all_messages: list[BaseMessage | str] = []
         for message in stream:
             if self.is_cancelled():
                 yield StreamStopInfo(stop_reason=StreamStopReason.CANCELLED)

backend/onyx/chat/models.py

@@ -3,6 +3,7 @@ from collections.abc import Iterator
 from datetime import datetime
 from enum import Enum
 from typing import Any
+from typing import Literal
 from typing import TYPE_CHECKING
 
 from pydantic import BaseModel
@@ -48,6 +49,8 @@ class QADocsResponse(RetrievalDocs):
     applied_source_filters: list[DocumentSource] | None
     applied_time_cutoff: datetime | None
     recency_bias_multiplier: float
+    level: int | None = None
+    level_question_nr: int | None = None
 
     def model_dump(self, *args: list, **kwargs: dict[str, Any]) -> dict[str, Any]:  # type: ignore
         initial_dict = super().model_dump(mode="json", *args, **kwargs)  # type: ignore
@@ -61,11 +64,17 @@ class QADocsResponse(RetrievalDocs):
 class StreamStopReason(Enum):
     CONTEXT_LENGTH = "context_length"
     CANCELLED = "cancelled"
+    FINISHED = "finished"
 
 
 class StreamStopInfo(BaseModel):
     stop_reason: StreamStopReason
 
+    stream_type: Literal["", "sub_questions", "sub_answer", "main_answer"] = ""
+    # used to identify the stream that was stopped for agent search
+    level: int | None = None
+    level_question_nr: int | None = None
+
     def model_dump(self, *args: list, **kwargs: dict[str, Any]) -> dict[str, Any]:  # type: ignore
         data = super().model_dump(mode="json", *args, **kwargs)  # type: ignore
         data["stop_reason"] = self.stop_reason.name
@@ -108,6 +117,8 @@ class OnyxAnswerPiece(BaseModel):
 class CitationInfo(BaseModel):
     citation_num: int
     document_id: str
+    level: int | None = None
+    level_question_nr: int | None = None
 
 
 class AllCitations(BaseModel):
@@ -273,7 +284,7 @@ class AnswerStyleConfig(BaseModel):
 
 class PromptConfig(BaseModel):
     """Final representation of the Prompt configuration passed
-    into the `Answer` object."""
+    into the `PromptBuilder` object."""
 
     system_prompt: str
     task_prompt: str
@@ -299,6 +310,48 @@ class PromptConfig(BaseModel):
     model_config = ConfigDict(frozen=True)
 
 
+class SubQueryPiece(BaseModel):
+    sub_query: str
+    level: int
+    level_question_nr: int
+    query_id: int
+
+
+class AgentAnswerPiece(BaseModel):
+    answer_piece: str
+    level: int
+    level_question_nr: int
+    answer_type: Literal["agent_sub_answer", "agent_level_answer"]
+
+
+class SubQuestionPiece(BaseModel):
+    sub_question: str
+    level: int
+    level_question_nr: int
+
+
+class ExtendedToolResponse(ToolResponse):
+    level: int
+    level_question_nr: int
+
+
+class RefinedAnswerImprovement(BaseModel):
+    refined_answer_improvement: bool
+
+
+AgentSearchPacket = (
+    SubQuestionPiece
+    | AgentAnswerPiece
+    | SubQueryPiece
+    | ExtendedToolResponse
+    | RefinedAnswerImprovement
+)
+
+AnswerPacket = (
+    AnswerQuestionPossibleReturn | AgentSearchPacket | ToolCallKickoff | ToolResponse
+)
+
+
 ResponsePart = (
     OnyxAnswerPiece
     | CitationInfo
@@ -306,4 +359,7 @@ ResponsePart = (
     | ToolResponse
     | ToolCallFinalResult
     | StreamStopInfo
+    | AgentSearchPacket
 )
+
+AnswerStream = Iterator[AnswerPacket]

backend/onyx/chat/process_message.py

@@ -1,6 +1,8 @@
 import traceback
+from collections import defaultdict
 from collections.abc import Callable
 from collections.abc import Iterator
+from dataclasses import dataclass
 from functools import partial
 from typing import cast
 
@@ -9,6 +11,7 @@ from sqlalchemy.orm import Session
 from onyx.chat.answer import Answer
 from onyx.chat.chat_utils import create_chat_chain
 from onyx.chat.chat_utils import create_temporary_persona
+from onyx.chat.models import AgentSearchPacket
 from onyx.chat.models import AllCitations
 from onyx.chat.models import AnswerStyleConfig
 from onyx.chat.models import ChatOnyxBotResponse
@@ -16,6 +19,7 @@ from onyx.chat.models import CitationConfig
 from onyx.chat.models import CitationInfo
 from onyx.chat.models import CustomToolResponse
 from onyx.chat.models import DocumentPruningConfig
+from onyx.chat.models import ExtendedToolResponse
 from onyx.chat.models import FileChatDisplay
 from onyx.chat.models import FinalUsedContextDocsResponse
 from onyx.chat.models import LLMRelevanceFilterResponse
@@ -25,19 +29,28 @@ from onyx.chat.models import OnyxAnswerPiece
 from onyx.chat.models import OnyxContexts
 from onyx.chat.models import PromptConfig
 from onyx.chat.models import QADocsResponse
+from onyx.chat.models import RefinedAnswerImprovement
 from onyx.chat.models import StreamingError
 from onyx.chat.models import StreamStopInfo
+from onyx.chat.models import StreamStopReason
+from onyx.chat.prompt_builder.answer_prompt_builder import AnswerPromptBuilder
+from onyx.chat.prompt_builder.answer_prompt_builder import default_build_system_message
+from onyx.chat.prompt_builder.answer_prompt_builder import default_build_user_message
 from onyx.configs.chat_configs import CHAT_TARGET_CHUNK_PERCENTAGE
 from onyx.configs.chat_configs import DISABLE_LLM_CHOOSE_SEARCH
 from onyx.configs.chat_configs import MAX_CHUNKS_FED_TO_CHAT
+from onyx.configs.constants import AGENT_SEARCH_INITIAL_KEY
+from onyx.configs.constants import BASIC_KEY
 from onyx.configs.constants import MessageType
 from onyx.configs.constants import MilestoneRecordType
 from onyx.configs.constants import NO_AUTH_USER_ID
+from onyx.context.search.enums import LLMEvaluationType
 from onyx.context.search.enums import OptionalSearchSetting
 from onyx.context.search.enums import QueryFlow
 from onyx.context.search.enums import SearchType
 from onyx.context.search.models import InferenceSection
 from onyx.context.search.models import RetrievalDetails
+from onyx.context.search.models import SearchRequest
 from onyx.context.search.retrieval.search_runner import inference_sections_from_ids
 from onyx.context.search.utils import chunks_or_sections_to_search_docs
 from onyx.context.search.utils import dedupe_documents
@@ -127,7 +140,6 @@ from onyx.utils.timing import log_function_time
 from onyx.utils.timing import log_generator_function_time
 from shared_configs.contextvars import CURRENT_TENANT_ID_CONTEXTVAR
 
-
 logger = setup_logger()
 
 
@@ -159,12 +171,15 @@ def _handle_search_tool_response_summary(
 ) -> tuple[QADocsResponse, list[DbSearchDoc], list[int] | None]:
     response_sumary = cast(SearchResponseSummary, packet.response)
 
+    is_extended = isinstance(packet, ExtendedToolResponse)
     dropped_inds = None
     if not selected_search_docs:
         top_docs = chunks_or_sections_to_search_docs(response_sumary.top_sections)
 
         deduped_docs = top_docs
-        if dedupe_docs:
+        if (
+            dedupe_docs and not is_extended
+        ):  # Extended tool responses are already deduped
             deduped_docs, dropped_inds = dedupe_documents(top_docs)
 
         reference_db_search_docs = [
@@ -178,6 +193,10 @@ def _handle_search_tool_response_summary(
         translate_db_search_doc_to_server_search_doc(db_search_doc)
         for db_search_doc in reference_db_search_docs
     ]
+
+    level, question_nr = None, None
+    if isinstance(packet, ExtendedToolResponse):
+        level, question_nr = packet.level, packet.level_question_nr
     return (
         QADocsResponse(
             rephrased_query=response_sumary.rephrased_query,
@@ -187,6 +206,8 @@ def _handle_search_tool_response_summary(
             applied_source_filters=response_sumary.final_filters.source_type,
             applied_time_cutoff=response_sumary.final_filters.time_cutoff,
             recency_bias_multiplier=response_sumary.recency_bias_multiplier,
+            level=level,
+            level_question_nr=question_nr,
         ),
         reference_db_search_docs,
         dropped_inds,
@@ -282,10 +303,22 @@ ChatPacket = (
     | MessageSpecificCitations
     | MessageResponseIDInfo
     | StreamStopInfo
+    | AgentSearchPacket
 )
 ChatPacketStream = Iterator[ChatPacket]
 
 
+# can't store a DbSearchDoc in a Pydantic BaseModel
+@dataclass
+class AnswerPostInfo:
+    ai_message_files: list[FileDescriptor]
+    qa_docs_response: QADocsResponse | None = None
+    reference_db_search_docs: list[DbSearchDoc] | None = None
+    dropped_indices: list[int] | None = None
+    tool_result: ToolCallFinalResult | None = None
+    message_specific_citations: MessageSpecificCitations | None = None
+
+
 def stream_chat_message_objects(
     new_msg_req: CreateChatMessageRequest,
     user: User | None,
@@ -324,6 +357,7 @@ def stream_chat_message_objects(
     new_msg_req.chunks_above = 0
     new_msg_req.chunks_below = 0
 
+    llm = None
     try:
         user_id = user.id if user is not None else None
 
@@ -502,11 +536,8 @@ def stream_chat_message_objects(
         files = load_all_chat_files(
             history_msgs, new_msg_req.file_descriptors, db_session
         )
-        latest_query_files = [
-            file
-            for file in files
-            if file.file_id in [f["id"] for f in new_msg_req.file_descriptors]
-        ]
+        req_file_ids = [f["id"] for f in new_msg_req.file_descriptors]
+        latest_query_files = [file for file in files if file.file_id in req_file_ids]
 
         if user_message:
             attach_files_to_chat_message(
@@ -679,13 +710,58 @@ def stream_chat_message_objects(
         for tool_list in tool_dict.values():
             tools.extend(tool_list)
 
+        # TODO: unify message history with single message history
+        message_history = [
+            PreviousMessage.from_chat_message(msg, files) for msg in history_msgs
+        ]
+
+        search_request = SearchRequest(
+            query=final_msg.message,
+            evaluation_type=(
+                LLMEvaluationType.BASIC
+                if persona.llm_relevance_filter
+                else LLMEvaluationType.SKIP
+            ),
+            human_selected_filters=(
+                retrieval_options.filters if retrieval_options else None
+            ),
+            persona=persona,
+            offset=(retrieval_options.offset if retrieval_options else None),
+            limit=retrieval_options.limit if retrieval_options else None,
+            rerank_settings=new_msg_req.rerank_settings,
+            chunks_above=new_msg_req.chunks_above,
+            chunks_below=new_msg_req.chunks_below,
+            full_doc=new_msg_req.full_doc,
+            enable_auto_detect_filters=(
+                retrieval_options.enable_auto_detect_filters
+                if retrieval_options
+                else None
+            ),
+        )
+
+        force_use_tool = _get_force_search_settings(new_msg_req, tools)
+        prompt_builder = AnswerPromptBuilder(
+            user_message=default_build_user_message(
+                user_query=final_msg.message,
+                prompt_config=prompt_config,
+                files=latest_query_files,
+                single_message_history=single_message_history,
+            ),
+            system_message=default_build_system_message(prompt_config),
+            message_history=message_history,
+            llm_config=llm.config,
+            raw_user_query=final_msg.message,
+            raw_user_uploaded_files=latest_query_files or [],
+            single_message_history=single_message_history,
+        )
+        prompt_builder.update_system_prompt(default_build_system_message(prompt_config))
+
         # LLM prompt building, response capturing, etc.
         answer = Answer(
+            prompt_builder=prompt_builder,
             is_connected=is_connected,
-            question=final_msg.message,
             latest_query_files=latest_query_files,
             answer_style_config=answer_style_config,
-            prompt_config=prompt_config,
             llm=(
                 llm
                 or get_main_llm_from_tuple(
@@ -698,28 +774,42 @@ def stream_chat_message_objects(
                     )
                 )
             ),
-            message_history=[
-                PreviousMessage.from_chat_message(msg, files) for msg in history_msgs
-            ],
+            fast_llm=fast_llm,
+            force_use_tool=force_use_tool,
+            search_request=search_request,
+            chat_session_id=chat_session_id,
+            current_agent_message_id=reserved_message_id,
             tools=tools,
-            force_use_tool=_get_force_search_settings(new_msg_req, tools),
-            single_message_history=single_message_history,
+            db_session=db_session,
+            use_agentic_search=new_msg_req.use_agentic_search,
         )
 
-        reference_db_search_docs = None
-        qa_docs_response = None
-        # any files to associate with the AI message e.g. dall-e generated images
-        ai_message_files = []
-        dropped_indices = None
-        tool_result = None
+        # reference_db_search_docs = None
+        # qa_docs_response = None
+        # # any files to associate with the AI message e.g. dall-e generated images
+        # ai_message_files = []
+        # dropped_indices = None
+        # tool_result = None
 
+        # TODO: different channels for stored info when it's coming from the agent flow
+        info_by_subq: dict[tuple[int, int], AnswerPostInfo] = defaultdict(
+            lambda: AnswerPostInfo(ai_message_files=[])
+        )
+        refined_answer_improvement = True
         for packet in answer.processed_streamed_output:
             if isinstance(packet, ToolResponse):
+                level, level_question_nr = (
+                    (packet.level, packet.level_question_nr)
+                    if isinstance(packet, ExtendedToolResponse)
+                    else BASIC_KEY
+                )
+                info = info_by_subq[(level, level_question_nr)]
+                # TODO: don't need to dedupe here when we do it in agent flow
                 if packet.id == SEARCH_RESPONSE_SUMMARY_ID:
                     (
-                        qa_docs_response,
-                        reference_db_search_docs,
-                        dropped_indices,
+                        info.qa_docs_response,
+                        info.reference_db_search_docs,
+                        info.dropped_indices,
                     ) = _handle_search_tool_response_summary(
                         packet=packet,
                         db_session=db_session,
@@ -731,29 +821,34 @@ def stream_chat_message_objects(
                             else False
                         ),
                     )
-                    yield qa_docs_response
+                    yield info.qa_docs_response
                 elif packet.id == SECTION_RELEVANCE_LIST_ID:
                     relevance_sections = packet.response
 
-                    if reference_db_search_docs is not None:
-                        llm_indices = relevant_sections_to_indices(
-                            relevance_sections=relevance_sections,
-                            items=[
-                                translate_db_search_doc_to_server_search_doc(doc)
-                                for doc in reference_db_search_docs
-                            ],
+                    if info.reference_db_search_docs is None:
+                        logger.warning(
+                            "No reference docs found for relevance filtering"
+                        )
+                        continue
+
+                    llm_indices = relevant_sections_to_indices(
+                        relevance_sections=relevance_sections,
+                        items=[
+                            translate_db_search_doc_to_server_search_doc(doc)
+                            for doc in info.reference_db_search_docs
+                        ],
+                    )
+
+                    if info.dropped_indices:
+                        llm_indices = drop_llm_indices(
+                            llm_indices=llm_indices,
+                            search_docs=info.reference_db_search_docs,
+                            dropped_indices=info.dropped_indices,
                         )
 
-                        if dropped_indices:
-                            llm_indices = drop_llm_indices(
-                                llm_indices=llm_indices,
-                                search_docs=reference_db_search_docs,
-                                dropped_indices=dropped_indices,
-                            )
-
-                        yield LLMRelevanceFilterResponse(
-                            llm_selected_doc_indices=llm_indices
-                        )
+                    yield LLMRelevanceFilterResponse(
+                        llm_selected_doc_indices=llm_indices
+                    )
                 elif packet.id == FINAL_CONTEXT_DOCUMENTS_ID:
                     yield FinalUsedContextDocsResponse(
                         final_context_docs=packet.response
@@ -773,22 +868,24 @@ def stream_chat_message_objects(
                         ],
                         tenant_id=tenant_id,
                     )
-                    ai_message_files = [
-                        FileDescriptor(id=str(file_id), type=ChatFileType.IMAGE)
-                        for file_id in file_ids
-                    ]
+                    info.ai_message_files.extend(
+                        [
+                            FileDescriptor(id=str(file_id), type=ChatFileType.IMAGE)
+                            for file_id in file_ids
+                        ]
+                    )
                     yield FileChatDisplay(
                         file_ids=[str(file_id) for file_id in file_ids]
                     )
                 elif packet.id == INTERNET_SEARCH_RESPONSE_ID:
                     (
-                        qa_docs_response,
-                        reference_db_search_docs,
+                        info.qa_docs_response,
+                        info.reference_db_search_docs,
                     ) = _handle_internet_search_tool_response_summary(
                         packet=packet,
                         db_session=db_session,
                     )
-                    yield qa_docs_response
+                    yield info.qa_docs_response
                 elif packet.id == CUSTOM_TOOL_RESPONSE_ID:
                     custom_tool_response = cast(CustomToolCallSummary, packet.response)
 
@@ -797,7 +894,7 @@ def stream_chat_message_objects(
                         or custom_tool_response.response_type == "csv"
                     ):
                         file_ids = custom_tool_response.tool_result.file_ids
-                        ai_message_files.extend(
+                        info.ai_message_files.extend(
                             [
                                 FileDescriptor(
                                     id=str(file_id),
@@ -822,10 +919,21 @@ def stream_chat_message_objects(
                     yield cast(OnyxContexts, packet.response)
 
             elif isinstance(packet, StreamStopInfo):
-                pass
+                if packet.stop_reason == StreamStopReason.FINISHED:
+                    yield packet
+            elif isinstance(packet, RefinedAnswerImprovement):
+                refined_answer_improvement = packet.refined_answer_improvement
+                yield packet
             else:
                 if isinstance(packet, ToolCallFinalResult):
-                    tool_result = packet
+                    level, level_question_nr = (
+                        (packet.level, packet.level_question_nr)
+                        if packet.level is not None
+                        and packet.level_question_nr is not None
+                        else BASIC_KEY
+                    )
+                    info = info_by_subq[(level, level_question_nr)]
+                    info.tool_result = packet
                 yield cast(ChatPacket, packet)
         logger.debug("Reached end of stream")
     except ValueError as e:
@@ -841,59 +949,99 @@ def stream_chat_message_objects(
 
         error_msg = str(e)
         stack_trace = traceback.format_exc()
-        client_error_msg = litellm_exception_to_error_msg(e, llm)
-        if llm.config.api_key and len(llm.config.api_key) > 2:
-            error_msg = error_msg.replace(llm.config.api_key, "[REDACTED_API_KEY]")
-            stack_trace = stack_trace.replace(llm.config.api_key, "[REDACTED_API_KEY]")
+        if llm:
+            client_error_msg = litellm_exception_to_error_msg(e, llm)
+            if llm.config.api_key and len(llm.config.api_key) > 2:
+                error_msg = error_msg.replace(llm.config.api_key, "[REDACTED_API_KEY]")
+                stack_trace = stack_trace.replace(
+                    llm.config.api_key, "[REDACTED_API_KEY]"
+                )
 
-        yield StreamingError(error=client_error_msg, stack_trace=stack_trace)
+            yield StreamingError(error=client_error_msg, stack_trace=stack_trace)
         db_session.rollback()
         return
 
     # Post-LLM answer processing
     try:
-        logger.debug("Post-LLM answer processing")
-        message_specific_citations: MessageSpecificCitations | None = None
-        if reference_db_search_docs:
-            message_specific_citations = _translate_citations(
-                citations_list=answer.citations,
-                db_docs=reference_db_search_docs,
-            )
-            if not answer.is_cancelled():
-                yield AllCitations(citations=answer.citations)
-
-        # Saving Gen AI answer and responding with message info
         tool_name_to_tool_id: dict[str, int] = {}
         for tool_id, tool_list in tool_dict.items():
             for tool in tool_list:
                 tool_name_to_tool_id[tool.name] = tool_id
 
+        subq_citations = answer.citations_by_subquestion()
+        for pair in subq_citations:
+            level, level_question_nr = pair
+            info = info_by_subq[(level, level_question_nr)]
+            logger.debug("Post-LLM answer processing")
+            if info.reference_db_search_docs:
+                info.message_specific_citations = _translate_citations(
+                    citations_list=subq_citations[pair],
+                    db_docs=info.reference_db_search_docs,
+                )
+
+            # TODO: AllCitations should contain subq info?
+            if not answer.is_cancelled():
+                yield AllCitations(citations=subq_citations[pair])
+
+        # Saving Gen AI answer and responding with message info
+
+        info = (
+            info_by_subq[BASIC_KEY]
+            if BASIC_KEY in info_by_subq
+            else info_by_subq[AGENT_SEARCH_INITIAL_KEY]
+        )
         gen_ai_response_message = partial_response(
             message=answer.llm_answer,
             rephrased_query=(
-                qa_docs_response.rephrased_query if qa_docs_response else None
+                info.qa_docs_response.rephrased_query if info.qa_docs_response else None
             ),
-            reference_docs=reference_db_search_docs,
-            files=ai_message_files,
+            reference_docs=info.reference_db_search_docs,
+            files=info.ai_message_files,
             token_count=len(llm_tokenizer_encode_func(answer.llm_answer)),
             citations=(
-                message_specific_citations.citation_map
-                if message_specific_citations
+                info.message_specific_citations.citation_map
+                if info.message_specific_citations
                 else None
             ),
             error=None,
             tool_call=(
                 ToolCall(
-                    tool_id=tool_name_to_tool_id[tool_result.tool_name],
-                    tool_name=tool_result.tool_name,
-                    tool_arguments=tool_result.tool_args,
-                    tool_result=tool_result.tool_result,
+                    tool_id=tool_name_to_tool_id[info.tool_result.tool_name],
+                    tool_name=info.tool_result.tool_name,
+                    tool_arguments=info.tool_result.tool_args,
+                    tool_result=info.tool_result.tool_result,
                 )
-                if tool_result
+                if info.tool_result
                 else None
             ),
         )
 
+        # TODO: add answers for levels >= 1, where each level has the previous as its parent. Use
+        # the answer_by_level method in answer.py to get the answers for each level
+        next_level = 1
+        prev_message = gen_ai_response_message
+        agent_answers = answer.llm_answer_by_level()
+        while next_level in agent_answers:
+            next_answer = agent_answers[next_level]
+            info = info_by_subq[(next_level, AGENT_SEARCH_INITIAL_KEY[1])]
+            next_answer_message = create_new_chat_message(
+                chat_session_id=chat_session_id,
+                parent_message=prev_message,
+                message=next_answer,
+                prompt_id=None,
+                token_count=len(llm_tokenizer_encode_func(next_answer)),
+                message_type=MessageType.ASSISTANT,
+                db_session=db_session,
+                files=info.ai_message_files,
+                reference_docs=info.reference_db_search_docs,
+                citations=info.message_specific_citations.citation_map
+                if info.message_specific_citations
+                else None,
+                refined_answer_improvement=refined_answer_improvement,
+            )
+            next_level += 1
+            prev_message = next_answer_message
+
         logger.debug("Committing messages")
         db_session.commit()  # actually save user / assistant message
 

backend/onyx/chat/prompt_builder/answer_prompt_builder.py

@@ -4,6 +4,7 @@ from typing import cast
 from langchain_core.messages import BaseMessage
 from langchain_core.messages import HumanMessage
 from langchain_core.messages import SystemMessage
+from pydantic import BaseModel
 from pydantic.v1 import BaseModel as BaseModel__v1
 
 from onyx.chat.models import PromptConfig
@@ -84,6 +85,7 @@ class AnswerPromptBuilder:
         raw_user_query: str,
         raw_user_uploaded_files: list[InMemoryChatFile],
         single_message_history: str | None = None,
+        system_message: SystemMessage | None = None,
     ) -> None:
         self.max_tokens = compute_max_llm_input_tokens(llm_config)
 
@@ -108,7 +110,14 @@ class AnswerPromptBuilder:
             ),
         )
 
-        self.system_message_and_token_cnt: tuple[SystemMessage, int] | None = None
+        self.system_message_and_token_cnt: tuple[SystemMessage, int] | None = (
+            (
+                system_message,
+                check_message_tokens(system_message, self.llm_tokenizer_encode_func),
+            )
+            if system_message
+            else None
+        )
         self.user_message_and_token_cnt = (
             user_message,
             check_message_tokens(
@@ -174,6 +183,14 @@ class AnswerPromptBuilder:
         )
 
 
+# Stores some parts of a prompt builder as needed for tool calls
+class PromptSnapshot(BaseModel):
+    raw_message_history: list[PreviousMessage]
+    raw_user_query: str
+    built_prompt: list[BaseMessage]
+
+
+# TODO: rename this? AnswerConfig maybe?
 class LLMCall(BaseModel__v1):
     prompt_builder: AnswerPromptBuilder
     tools: list[Tool]

backend/onyx/chat/stream_processing/answer_response_handler.py

@@ -3,9 +3,10 @@ from collections.abc import Generator
 
 from langchain_core.messages import BaseMessage
 
-from onyx.chat.llm_response_handler import ResponsePart
 from onyx.chat.models import CitationInfo
 from onyx.chat.models import LlmDoc
+from onyx.chat.models import OnyxAnswerPiece
+from onyx.chat.models import ResponsePart
 from onyx.chat.stream_processing.citation_processing import CitationProcessor
 from onyx.chat.stream_processing.utils import DocumentIdOrderMapping
 from onyx.utils.logger import setup_logger
@@ -13,21 +14,32 @@ from onyx.utils.logger import setup_logger
 logger = setup_logger()
 
 
+# TODO: remove update() once it is no longer needed
 class AnswerResponseHandler(abc.ABC):
     @abc.abstractmethod
     def handle_response_part(
         self,
-        response_item: BaseMessage | None,
-        previous_response_items: list[BaseMessage],
+        response_item: BaseMessage | str | None,
+        previous_response_items: list[BaseMessage | str],
     ) -> Generator[ResponsePart, None, None]:
         raise NotImplementedError
 
 
+class PassThroughAnswerResponseHandler(AnswerResponseHandler):
+    def handle_response_part(
+        self,
+        response_item: BaseMessage | str | None,
+        previous_response_items: list[BaseMessage | str],
+    ) -> Generator[ResponsePart, None, None]:
+        content = _message_to_str(response_item)
+        yield OnyxAnswerPiece(answer_piece=content)
+
+
 class DummyAnswerResponseHandler(AnswerResponseHandler):
     def handle_response_part(
         self,
-        response_item: BaseMessage | None,
-        previous_response_items: list[BaseMessage],
+        response_item: BaseMessage | str | None,
+        previous_response_items: list[BaseMessage | str],
     ) -> Generator[ResponsePart, None, None]:
         # This is a dummy handler that returns nothing
         yield from []
@@ -56,43 +68,25 @@ class CitationResponseHandler(AnswerResponseHandler):
 
     def handle_response_part(
         self,
-        response_item: BaseMessage | None,
-        previous_response_items: list[BaseMessage],
+        response_item: BaseMessage | str | None,
+        previous_response_items: list[BaseMessage | str],
     ) -> Generator[ResponsePart, None, None]:
         if response_item is None:
             return
 
-        content = (
-            response_item.content if isinstance(response_item.content, str) else ""
-        )
+        content = _message_to_str(response_item)
 
         # Process the new content through the citation processor
         yield from self.citation_processor.process_token(content)
 
 
-# No longer in use, remove later
-# class QuotesResponseHandler(AnswerResponseHandler):
-#     def __init__(
-#         self,
-#         context_docs: list[LlmDoc],
-#         is_json_prompt: bool = True,
-#     ):
-#         self.quotes_processor = QuotesProcessor(
-#             context_docs=context_docs,
-#             is_json_prompt=is_json_prompt,
-#         )
-
-#     def handle_response_part(
-#         self,
-#         response_item: BaseMessage | None,
-#         previous_response_items: list[BaseMessage],
-#     ) -> Generator[ResponsePart, None, None]:
-#         if response_item is None:
-#             yield from self.quotes_processor.process_token(None)
-#             return
-
-#         content = (
-#             response_item.content if isinstance(response_item.content, str) else ""
-#         )
-
-#         yield from self.quotes_processor.process_token(content)
+def _message_to_str(message: BaseMessage | str | None) -> str:
+    if message is None:
+        return ""
+    if isinstance(message, str):
+        return message
+    content = message.content if isinstance(message, BaseMessage) else message
+    if not isinstance(content, str):
+        logger.warning(f"Received non-string content: {type(content)}")
+        content = str(content) if content is not None else ""
+    return content

backend/onyx/chat/tool_handling/tool_response_handler.py

@@ -5,7 +5,9 @@ from langchain_core.messages import BaseMessage
 from langchain_core.messages import ToolCall
 
 from onyx.chat.models import ResponsePart
+from onyx.chat.prompt_builder.answer_prompt_builder import AnswerPromptBuilder
 from onyx.chat.prompt_builder.answer_prompt_builder import LLMCall
+from onyx.chat.prompt_builder.answer_prompt_builder import PromptSnapshot
 from onyx.llm.interfaces import LLM
 from onyx.tools.force import ForceUseTool
 from onyx.tools.message import build_tool_message
@@ -25,6 +27,13 @@ from onyx.utils.logger import setup_logger
 logger = setup_logger()
 
 
+def get_tool_by_name(tools: list[Tool], tool_name: str) -> Tool:
+    for tool in tools:
+        if tool.name == tool_name:
+            return tool
+    raise RuntimeError(f"Tool '{tool_name}' not found")
+
+
 class ToolResponseHandler:
     def __init__(self, tools: list[Tool]):
         self.tools = tools
@@ -43,67 +52,12 @@ class ToolResponseHandler:
     def get_tool_call_for_non_tool_calling_llm(
         cls, llm_call: LLMCall, llm: LLM
     ) -> tuple[Tool, dict] | None:
-        if llm_call.force_use_tool.force_use:
-            # if we are forcing a tool, we don't need to check which tools to run
-            tool = next(
-                (
-                    t
-                    for t in llm_call.tools
-                    if t.name == llm_call.force_use_tool.tool_name
-                ),
-                None,
-            )
-            if not tool:
-                raise RuntimeError(
-                    f"Tool '{llm_call.force_use_tool.tool_name}' not found"
-                )
-
-            tool_args = (
-                llm_call.force_use_tool.args
-                if llm_call.force_use_tool.args is not None
-                else tool.get_args_for_non_tool_calling_llm(
-                    query=llm_call.prompt_builder.raw_user_query,
-                    history=llm_call.prompt_builder.raw_message_history,
-                    llm=llm,
-                    force_run=True,
-                )
-            )
-
-            if tool_args is None:
-                raise RuntimeError(f"Tool '{tool.name}' did not return args")
-
-            return (tool, tool_args)
-        else:
-            tool_options = check_which_tools_should_run_for_non_tool_calling_llm(
-                tools=llm_call.tools,
-                query=llm_call.prompt_builder.raw_user_query,
-                history=llm_call.prompt_builder.raw_message_history,
-                llm=llm,
-            )
-
-            available_tools_and_args = [
-                (llm_call.tools[ind], args)
-                for ind, args in enumerate(tool_options)
-                if args is not None
-            ]
-
-            logger.info(
-                f"Selecting single tool from tools: {[(tool.name, args) for tool, args in available_tools_and_args]}"
-            )
-
-            chosen_tool_and_args = (
-                select_single_tool_for_non_tool_calling_llm(
-                    tools_and_args=available_tools_and_args,
-                    history=llm_call.prompt_builder.raw_message_history,
-                    query=llm_call.prompt_builder.raw_user_query,
-                    llm=llm,
-                )
-                if available_tools_and_args
-                else None
-            )
-
-            logger.notice(f"Chosen tool: {chosen_tool_and_args}")
-            return chosen_tool_and_args
+        return get_tool_call_for_non_tool_calling_llm_impl(
+            force_use_tool=llm_call.force_use_tool,
+            tools=llm_call.tools,
+            prompt_builder=llm_call.prompt_builder,
+            llm=llm,
+        )
 
     def _handle_tool_call(self) -> Generator[ResponsePart, None, None]:
         if not self.tool_call_chunk or not self.tool_call_chunk.tool_calls:
@@ -118,20 +72,17 @@ class ToolResponseHandler:
                 tool for tool in self.tools if tool.name == tool_call_request["name"]
             ]
 
-            if not known_tools_by_name:
-                logger.error(
-                    "Tool call requested with unknown name field. \n"
-                    f"self.tools: {self.tools}"
-                    f"tool_call_request: {tool_call_request}"
-                )
-                continue
-            else:
+            if known_tools_by_name:
                 selected_tool = known_tools_by_name[0]
                 selected_tool_call_request = tool_call_request
-
-            if selected_tool and selected_tool_call_request:
                 break
 
+            logger.error(
+                "Tool call requested with unknown name field. \n"
+                f"self.tools: {self.tools}"
+                f"tool_call_request: {tool_call_request}"
+            )
+
         if not selected_tool or not selected_tool_call_request:
             return
 
@@ -157,8 +108,8 @@ class ToolResponseHandler:
 
     def handle_response_part(
         self,
-        response_item: BaseMessage | None,
-        previous_response_items: list[BaseMessage],
+        response_item: BaseMessage | str | None,
+        previous_response_items: list[BaseMessage | str],
     ) -> Generator[ResponsePart, None, None]:
         if response_item is None:
             yield from self._handle_tool_call()
@@ -171,8 +122,6 @@ class ToolResponseHandler:
             else:
                 self.tool_call_chunk += response_item  # type: ignore
 
-        return
-
     def next_llm_call(self, current_llm_call: LLMCall) -> LLMCall | None:
         if (
             self.tool_runner is None
@@ -205,3 +154,61 @@ class ToolResponseHandler:
                 self.tool_final_result,
             ],
         )
+
+
+def get_tool_call_for_non_tool_calling_llm_impl(
+    force_use_tool: ForceUseTool,
+    tools: list[Tool],
+    prompt_builder: AnswerPromptBuilder | PromptSnapshot,
+    llm: LLM,
+) -> tuple[Tool, dict] | None:
+    if force_use_tool.force_use:
+        # if we are forcing a tool, we don't need to check which tools to run
+        tool = get_tool_by_name(tools, force_use_tool.tool_name)
+
+        tool_args = (
+            force_use_tool.args
+            if force_use_tool.args is not None
+            else tool.get_args_for_non_tool_calling_llm(
+                query=prompt_builder.raw_user_query,
+                history=prompt_builder.raw_message_history,
+                llm=llm,
+                force_run=True,
+            )
+        )
+
+        if tool_args is None:
+            raise RuntimeError(f"Tool '{tool.name}' did not return args")
+
+        return (tool, tool_args)
+    else:
+        tool_options = check_which_tools_should_run_for_non_tool_calling_llm(
+            tools=tools,
+            query=prompt_builder.raw_user_query,
+            history=prompt_builder.raw_message_history,
+            llm=llm,
+        )
+
+        available_tools_and_args = [
+            (tools[ind], args)
+            for ind, args in enumerate(tool_options)
+            if args is not None
+        ]
+
+        logger.info(
+            f"Selecting single tool from tools: {[(tool.name, args) for tool, args in available_tools_and_args]}"
+        )
+
+        chosen_tool_and_args = (
+            select_single_tool_for_non_tool_calling_llm(
+                tools_and_args=available_tools_and_args,
+                history=prompt_builder.raw_message_history,
+                query=prompt_builder.raw_user_query,
+                llm=llm,
+            )
+            if available_tools_and_args
+            else None
+        )
+
+        logger.notice(f"Chosen tool: {chosen_tool_and_args}")
+        return chosen_tool_and_args

backend/onyx/configs/agent_configs.py

@@ -0,0 +1,77 @@
+import os
+
+AGENT_DEFAULT_RETRIEVAL_HITS = 15
+AGENT_DEFAULT_RERANKING_HITS = 10
+AGENT_DEFAULT_SUB_QUESTION_MAX_CONTEXT_HITS = 8
+AGENT_DEFAULT_NUM_DOCS_FOR_INITIAL_DECOMPOSITION = 3
+AGENT_DEFAULT_NUM_DOCS_FOR_REFINED_DECOMPOSITION = 5
+AGENT_DEFAULT_EXPLORATORY_SEARCH_RESULTS = 3
+AGENT_DEFAULT_MIN_ORIG_QUESTION_DOCS = 3
+AGENT_DEFAULT_MAX_ANSWER_CONTEXT_DOCS = 10
+AGENT_DEFAULT_MAX_STATIC_HISTORY_CHAR_LENGTH = 10000
+
+#####
+# Agent Configs
+#####
+
+
+AGENT_RETRIEVAL_STATS = (
+    not os.environ.get("AGENT_RETRIEVAL_STATS") == "False"
+) or True  # default True
+
+
+AGENT_MAX_QUERY_RETRIEVAL_RESULTS = int(
+    os.environ.get("AGENT_MAX_QUERY_RETRIEVAL_RESULTS") or AGENT_DEFAULT_RETRIEVAL_HITS
+)  # 15
+
+AGENT_MAX_QUERY_RETRIEVAL_RESULTS = int(
+    os.environ.get("AGENT_MAX_QUERY_RETRIEVAL_RESULTS") or AGENT_DEFAULT_RETRIEVAL_HITS
+)  # 15
+
+# Reranking agent configs
+# Reranking stats - no influence on flow outside of stats collection
+AGENT_RERANKING_STATS = (
+    not os.environ.get("AGENT_RERANKING_STATS") == "True"
+) or False  # default False
+
+AGENT_MAX_QUERY_RETRIEVAL_RESULTS = int(
+    os.environ.get("AGENT_MAX_QUERY_RETRIEVAL_RESULTS") or AGENT_DEFAULT_RETRIEVAL_HITS
+)  # 15
+
+AGENT_RERANKING_MAX_QUERY_RETRIEVAL_RESULTS = int(
+    os.environ.get("AGENT_RERANKING_MAX_QUERY_RETRIEVAL_RESULTS")
+    or AGENT_DEFAULT_RERANKING_HITS
+)  # 10
+
+AGENT_NUM_DOCS_FOR_DECOMPOSITION = int(
+    os.environ.get("AGENT_NUM_DOCS_FOR_DECOMPOSITION")
+    or AGENT_DEFAULT_NUM_DOCS_FOR_INITIAL_DECOMPOSITION
+)  # 3
+
+AGENT_NUM_DOCS_FOR_REFINED_DECOMPOSITION = int(
+    os.environ.get("AGENT_NUM_DOCS_FOR_REFINED_DECOMPOSITION")
+    or AGENT_DEFAULT_NUM_DOCS_FOR_REFINED_DECOMPOSITION
+)  # 5
+
+AGENT_EXPLORATORY_SEARCH_RESULTS = int(
+    os.environ.get("AGENT_EXPLORATORY_SEARCH_RESULTS")
+    or AGENT_DEFAULT_EXPLORATORY_SEARCH_RESULTS
+)  # 3
+
+AGENT_MIN_ORIG_QUESTION_DOCS = int(
+    os.environ.get("AGENT_MIN_ORIG_QUESTION_DOCS")
+    or AGENT_DEFAULT_MIN_ORIG_QUESTION_DOCS
+)  # 3
+
+AGENT_MAX_ANSWER_CONTEXT_DOCS = int(
+    os.environ.get("AGENT_MAX_ANSWER_CONTEXT_DOCS")
+    or AGENT_DEFAULT_SUB_QUESTION_MAX_CONTEXT_HITS
+)  # 8
+
+
+AGENT_MAX_STATIC_HISTORY_CHAR_LENGTH = int(
+    os.environ.get("AGENT_MAX_STATIC_HISTORY_CHAR_LENGTH")
+    or AGENT_DEFAULT_MAX_STATIC_HISTORY_CHAR_LENGTH
+)  # 10000
+
+GRAPH_VERSION_NAME: str = "a"