A2A Python SDK

A Python library for running agentic applications as A2A Servers, following the Agent2Agent (A2A) Protocol.

✨ Features

• A2A Protocol Compliant: Build agentic applications that adhere to the Agent2Agent (A2A) Protocol.
• Extensible: Easily add support for different communication protocols and database backends.
• Asynchronous: Built on modern async Python for high performance.
• Optional Integrations: Includes optional support for:
  • HTTP servers (FastAPI, Starlette)
  • gRPC
  • OpenTelemetry for tracing
  • SQL databases (PostgreSQL, MySQL, SQLite)

🚀 Getting Started

Prerequisites

• Python 3.10+
• uv (recommended) or pip

🔧 Installation

Install the core SDK and any desired extras using your preferred package manager.

Examples

Helloworld Example

1. Run Remote Agent

   git clone https://github.com/a2aproject/a2a-samples.git
   cd a2a-samples/samples/python/agents/helloworld
   uv run .
   

2. In another terminal, run the client

   cd a2a-samples/samples/python/agents/helloworld
   uv run test_client.py
   

3. You can validate your agent using the agent inspector. Follow the instructions at the a2a-inspector repo.

🌐 More Examples

You can find a variety of more detailed examples in the a2a-samples repository:

• Python Examples
• JavaScript Examples

🤝 Contributing

Contributions are welcome! Please see the CONTRIBUTING.md file for guidelines on how to get involved.

📄 License

This project is licensed under the Apache 2.0 License. See the LICENSE file for more details.