What's new with Agents: ADK, Agent Engine, and A2A Enhancements- Google Developers Blog
May 20, 2025Polong Lin, Holt Skinner

Summary
This post announces the stable v1.0.0 release of the Python Agent Development Kit (ADK) and the initial v0.1.0 release of the Java ADK. It introduces the Agent Engine UI for simplified deployment, management, and monitoring of agents, including metrics, sessions, and trace debugging. The Agent2Agent (A2A) protocol has been updated to v0.2, adding support for stateless interactions and standardized authentication. The A2A Python SDK is now available, and new A2A integrations are highlighted from partners like Auth0, Box, Microsoft, SAP, and Zoom.
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