reasoning_agent_events.py
"""
Reasoning Agent Events
=============================
Reasoning Agent Events.
"""
import asyncio
from agno.agent import RunEvent
from agno.agent.agent import Agent
from agno.models.openai import OpenAIResponses
# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
finance_agent = Agent(
model=OpenAIResponses(id="gpt-5.2"),
reasoning=True,
)
async def run_agent_with_events(prompt: str):
content_started = False
async for run_output_event in finance_agent.arun(
prompt,
stream=True,
stream_events=True,
):
if run_output_event.event in [RunEvent.run_started, RunEvent.run_completed]:
print(f"\nEVENT: {run_output_event.event}")
if run_output_event.event in [RunEvent.reasoning_started]:
print(f"\nEVENT: {run_output_event.event}")
if run_output_event.event in [RunEvent.reasoning_step]:
print(f"\nEVENT: {run_output_event.event}")
print(f"REASONING CONTENT: {run_output_event.reasoning_content}") # type: ignore
if run_output_event.event in [RunEvent.reasoning_completed]:
print(f"\nEVENT: {run_output_event.event}")
if run_output_event.event in [RunEvent.run_content]:
if not content_started:
print("\nCONTENT:")
content_started = True
else:
print(run_output_event.content, end="")
# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
task = (
"Analyze the key factors that led to the signing of the Treaty of Versailles in 1919. "
"Discuss the political, economic, and social impacts of the treaty on Germany and how it "
"contributed to the onset of World War II. Provide a nuanced assessment that includes "
"multiple historical perspectives."
)
asyncio.run(
run_agent_with_events(
task,
)
)
Run the Example
1
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activate
uv venv --python 3.12
.venv\Scripts\activate
2
Install dependencies
uv pip install -U agno openai
3
Export your OpenAI API key
export OPENAI_API_KEY="your_openai_api_key_here"
$Env:OPENAI_API_KEY="your_openai_api_key_here"
4
Run the example
Save the code above as
reasoning_agent_events.py, then run:python reasoning_agent_events.py