Basic Agent Events

Stream agent events including run lifecycle, tool calls, and content output.

Basic Agent Events.

"""
Basic Agent Events
=============================

Basic Agent Events.
"""

import asyncio

from agno.agent import RunEvent
from agno.agent.agent import Agent
from agno.models.openai import OpenAIResponses
from agno.tools.yfinance import YFinanceTools

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
finance_agent = Agent(
    id="finance-agent",
    name="Finance Agent",
    model=OpenAIResponses(id="gpt-5.2"),
    tools=[YFinanceTools()],
)


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.tool_call_started]:
            print(f"\nEVENT: {run_output_event.event}")
            print(f"TOOL CALL: {run_output_event.tool.tool_name}")  # type: ignore
            print(f"TOOL CALL ARGS: {run_output_event.tool.tool_args}")  # type: ignore

        if run_output_event.event in [RunEvent.tool_call_completed]:
            print(f"\nEVENT: {run_output_event.event}")
            print(f"TOOL CALL: {run_output_event.tool.tool_name}")  # type: ignore
            print(f"TOOL CALL RESULT: {run_output_event.tool.result}")  # type: ignore

        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__":
    asyncio.run(
        run_agent_with_events(
            "What is the price of Apple stock?",
        )
    )

Run the Example

# Clone and setup repo
git clone https://github.com/agno-agi/agno.git
cd agno/cookbook/02_agents/14_advanced

# Create and activate virtual environment
./scripts/demo_setup.sh
source .venvs/demo/bin/activate

python basic_agent_events.py