A2A Python SDK

The A2A Python SDK is an official library for building agentic applications that comply with the Agent2Agent (A2A) Protocol. It provides foundational building blocks for creating A2A servers and clients, supporting features like multi-turn conversations and streaming responses. The library is actively maintained with regular updates, and the 0.3 version of the protocol is intended to remain stable for a significant period with backward compatibility for SDKs starting at version 0.3. [1, 3, 12, 17, 19]