A2A Agent Examples

This folder contains examples demonstrating how to create and use agents with the A2A (Agent2Agent) protocol from the agent_framework package to communicate with remote A2A agents.

By default the A2AAgent waits for the remote agent to finish before returning (background=False), so long-running A2A tasks are handled transparently. For advanced scenarios where you need to poll or resubscribe to in-progress tasks using continuation tokens, see the background responses sample.

For more information about the A2A protocol specification, visit: https://a2a-protocol.org/latest/

Examples

File	Description
`agent_with_a2a.py`	Demonstrates agent discovery, non-streaming and streaming responses using the A2A protocol.

Environment Variables

Make sure to set the following environment variables before running the example:

Required

A2A_AGENT_HOST: URL of a single A2A agent (for simple sample, e.g., http://localhost:5001/)

Quick Testing with .NET A2A Servers

For quick testing and demonstration, you can use the pre-built .NET A2A servers from this repository:

Quick Testing Reference: Use the .NET A2A Client Server sample at: ..\agent-framework\dotnet\samples\05-end-to-end\A2AClientServer

Run Python A2A Sample

# Simple A2A sample (single agent)
uv run python agent_with_a2a.py

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