Standards
Agent2Agent (A2A)
Agent-to-agent transport; deliberately memory-free.
Specification
★ 26,476 on GitHub · +7 today · last commit Nov 5, 2026
What it is
Agent-to-agent transport; deliberately memory-free.
At a glance
- Business model
- Specification
- License
- Apache-2.0
- Governing body
- Linux Foundation, AAIF Growth Stage project 2026-08-27; 150+ orgs
- Maturity
- v1.0 production (2026-03-12; v1.0.1 May 2026)
- What it says about memory
- NONE — spec goals: agents collaborate 'without needing access to each other's internal state, memory, or tools'. URI-declared extensions are the most plausible de-facto memory-extension path.
- Artifacts
- specification/a2a.proto (normative); .well-known/agent-card.json; JWS-signed AgentCards
GitHub activity
This product has a public repository, so we read it nightly from the GitHub API. Stars measure developer attention, not quality or market share.
“Agent2Agent (A2A) is an open protocol enabling communication and interoperability between opaque agentic applications.” (repository description)
- Stars
- 26,476
- Change since last reading
- +7
- Forks
- 2,693
- Open issues
- 307
- Last commit
- Nov 5, 2026 (4 days ago)
- License (GitHub)
- Apache-2.0
Links and sources
- Official sitea2a-protocol.org
- GitHub repositorygithub.com/a2aproject/A2A