Capture Reasoning Content Knowledge Tools
Capture available tool-generated reasoning from a completed run and its successful terminal streaming event.
"""
Capture Reasoning Content Knowledge Tools
=========================================
Demonstrates this reasoning cookbook example.
"""
import asyncio
from textwrap import dedent
from agno.agent import Agent
from agno.knowledge.embedder.openai import OpenAIEmbedder
from agno.knowledge.knowledge import Knowledge
from agno.models.openai import OpenAIChat
from agno.tools.knowledge import KnowledgeTools
from agno.vectordb.lancedb import LanceDb, SearchType
# ---------------------------------------------------------------------------
# Create Example
# ---------------------------------------------------------------------------
def run_example() -> None:
# Create a knowledge containing information from a URL
print("Setting up URL knowledge...")
agno_docs = Knowledge(
# Use LanceDB as the vector database
vector_db=LanceDb(
uri="tmp/lancedb",
table_name="cookbook_knowledge_tools",
search_type=SearchType.hybrid,
embedder=OpenAIEmbedder(id="text-embedding-3-small"),
),
)
# Add content to the knowledge
asyncio.run(agno_docs.ainsert(url="https://www.paulgraham.com/read.html"))
print("Knowledge ready.")
print("\n=== Example 1: Using KnowledgeTools in non-streaming mode ===\n")
# Create agent with KnowledgeTools
agent = Agent(
model=OpenAIChat(id="gpt-5.6-luna"),
tools=[
KnowledgeTools(
knowledge=agno_docs,
enable_think=True,
enable_search=True,
enable_analyze=True,
add_instructions=True,
)
],
instructions=dedent("""\
You are an expert problem-solving assistant with strong analytical skills! Use the knowledge tools to organize your thoughts, search for information,
and analyze results step-by-step.
\
"""),
markdown=True,
)
# Run the agent (non-streaming) using agent.run() to get the response
print("Running with KnowledgeTools (non-streaming)...")
response = agent.run(
"What does Paul Graham explain here with respect to need to read?", stream=False
)
# Check reasoning_content from the response
print("\n--- reasoning_content from response ---")
if hasattr(response, "reasoning_content") and response.reasoning_content:
print("[OK] reasoning_content FOUND in non-streaming response")
print(f" Length: {len(response.reasoning_content)} characters")
print("\n=== reasoning_content preview (non-streaming) ===")
preview = response.reasoning_content[:1000]
if len(response.reasoning_content) > 1000:
preview += "..."
print(preview)
else:
print("[NOT FOUND] reasoning_content NOT FOUND in non-streaming response")
print("\n\n=== Example 2: Using KnowledgeTools in streaming mode ===\n")
# Create a fresh agent for streaming
streaming_agent = Agent(
model=OpenAIChat(id="gpt-5.6-luna"),
tools=[
KnowledgeTools(
knowledge=agno_docs,
enable_think=True,
enable_search=True,
enable_analyze=True,
add_instructions=True,
)
],
instructions=dedent("""\
You are an expert problem-solving assistant with strong analytical skills! Use the knowledge tools to organize your thoughts, search for information,
and analyze results step-by-step.
\
"""),
markdown=True,
)
# Process streaming responses and look for the final RunOutput
print("Running with KnowledgeTools (streaming)...")
final_response = None
for event in streaming_agent.run(
"What does Paul Graham explain here with respect to need to read?",
stream=True,
stream_events=True,
):
# Print content as it streams (optional)
if hasattr(event, "content") and event.content:
print(event.content, end="", flush=True)
# The final event in the stream should be a RunOutput object
if hasattr(event, "reasoning_content"):
final_response = event
print("\n\n--- reasoning_content from final stream event ---")
if (
final_response
and hasattr(final_response, "reasoning_content")
and final_response.reasoning_content
):
print("[OK] reasoning_content FOUND in final stream event")
print(f" Length: {len(final_response.reasoning_content)} characters")
print("\n=== reasoning_content preview (streaming) ===")
preview = final_response.reasoning_content[:1000]
if len(final_response.reasoning_content) > 1000:
preview += "..."
print(preview)
else:
print("[NOT FOUND] reasoning_content NOT FOUND in final stream event")
# ---------------------------------------------------------------------------
# Run Example
# ---------------------------------------------------------------------------
if __name__ == "__main__":
run_example()Gate capture on successful completion
Reasoning content appears when the model selects the relevant tools. A reasoning event can arrive before the model later fails, so finding a reasoning_content attribute does not prove that a run completed.
Before running the preserved program, add these imports:
from agno.run.agent import RunEvent
from agno.run.base import RunStatusImmediately after the non-streaming response = agent.run(...) call, add:
if response.status != RunStatus.completed:
raise RuntimeError(f"Run ended with {response.status}")Inside the streaming loop, replace the if hasattr(event, "reasoning_content"): assignment block with:
if event.event in (RunEvent.run_error, RunEvent.run_cancelled):
raise RuntimeError(f"Stream ended with {event.event}")
if event.event == RunEvent.run_completed:
final_response = eventAfter the loop, before printing its final-result checks, add:
if final_response is None:
raise RuntimeError("Stream ended without RunCompleted")The selected object is a RunCompletedEvent, rather than a final RunOutput. Keep the existing nonempty-content check: a completed run can contain no tool-generated reasoning. These tools expose model-authored scratchpad text; their output is not a private internal trace.
For the optional live text display, replace the broad hasattr(event, "content") condition with if event.event == RunEvent.run_content and event.content:. This prints answer deltas once, without also printing content carried by later lifecycle events.
Run the Example
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activateInstall dependencies
uv pip install -U agno beautifulsoup4 lancedb openai pyarrowExport your OpenAI API key
export OPENAI_API_KEY="your_openai_api_key_here"Run the example
Save the code above as capture_reasoning_content_knowledge_tools.py, then run:
python capture_reasoning_content_knowledge_tools.pyFull source: cookbook/10_reasoning/tools/capture_reasoning_content_knowledge_tools.py