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Code

a2a_basic.py
from agno.agent.agent import Agent
from agno.models.openai import OpenAIResponses
from agno.os import AgentOS
from agno.os.interfaces.a2a import A2A

chat_agent = Agent(
    name="Assistant",
    model=OpenAIResponses(id="gpt-5.2"),
    instructions="You are a helpful AI assistant.",
    add_datetime_to_context=True,
    markdown=True,
)

agent_os = AgentOS(
    agents=[chat_agent],
    a2a_interface=True,
)
app = agent_os.get_app()

if __name__ == "__main__":
    agent_os.serve(app="a2a_basic:app", reload=True)

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Usage

1

Set up your virtual environment

uv venv --python 3.12
source .venv/bin/activate
2

Set Environment Variables

export OPENAI_API_KEY=your_openai_api_key
3

Install dependencies

uv pip install -U agno openai a2a-protocol
4

Run Example

python a2a_basic.py

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Key Features

  • A2A Interface: A2A compatible conversation experience
  • Real-time Chat: Instant message exchange
  • Markdown Support: Rich text formatting in responses
  • DateTime Context: Time-aware responses
  • Open Protocol: Compatible with A2A frontends