Revision History
Agent2Agent Protocol · 10 revisions
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- Update: added an official video.
Version 10 · Nov 1, 2026, 07:48 AM
- Correction: independent verification fixes. The implicit and password OAuth flows were deprecated in v1.0 (the release notes say removed, but the normative a2a.proto keeps them marked deprecated); gRPC and REST definitions entered the spec in v0.2.2 (June 2025), not v0.3.0; the v1.0 announcement called the Agent Card change backward-compatible; repair-shop analogy and roadmap hedge restored to the documentation's wording
Version 9 · Oct 30, 2026, 08:33 AM
- Correction: fact-check. A2A joined the Agentic AI Foundation on August 17, 2026, not December 2025 (it was a separate Linux Foundation project from June 2025); AAIF co-founders were Anthropic, Block and OpenAI per Anthropic; BeeAI and Docling were not AAIF projects; the unsourced MCP-A2A joint spec 'targeted for Q3 2026' was removed; signed Agent Cards and gRPC arrived in v0.3.0, not v1.0; PKCE applies to the Authorization Code flow; v1.0 field and method names updated; Tyson Foods/Gordon Food Service was a pilot; two misquotes fixed; AP2 donated to the FIDO Alliance; A2UI described from its spec
Version 8 · Oct 30, 2026, 08:24 AM
- Improve internal links (2026-10-13)
Version 6 · Oct 13, 2026, 10:20 AM
- Added 6 contextual internal links
Version 5 · Jul 23, 2026, 03:29 PM