Official Sources and Resources

This index brings together official A2A documentation, specifications, version information, and this site’s synced material. Implementation guides cover implementation; the reference covers fields and error codes.

Official originals

• A2A official documentation
• A2A GitHub repository
• Release notes
• Samples repository a2a-samples
• A2A Inspector and A2A TCK

Copies and syncs on this site

• Specification: the specification with its core protocol , data structures , discovery , security , protocol bindings , and workflows pages;
• Versions and community: What’s New in A2A Protocol v1.0 , the roadmap , partners , and the Community Hub ;
• Official blog posts: the blog , including the A2A CLI announcement;
• Official topics and tutorials: Life of a Task , Multi-Tenancy , A2A and MCP , and the Python tutorial ;
• Official SDKs: Official SDKs .