Google ADK Reaches v1.0 Stable Across Python, Go, and Java — A2A Protocol Hits v1.2 With Signed Agent Cards

Google Developers Blog·medium signal

Google's Agent Development Kit achieved production-ready v1.0 across all three major languages (Python, Go, Java) with native Agent2Agent protocol support. A2A v1.2 now includes cryptographic signatures for agent card domain verification and is in production at 150+ organizations, governed by the AAIF under the Linux Foundation. The ecosystem now has 110M+ monthly MCP downloads and growing enterprise adoption of agent interoperability standards.