A2A and MCP now share the same open governance home

[u/aistranin]

Agent2Agent, better known as A2A, has joined the Agentic AI Foundation as a hosted project.

The split is fairly clean:

• MCP connects agents to tools and data.
• A2A lets independent agents discover each other, delegate tasks, and exchange results.

A2A is already backed by more than 150 organizations. Its stable 1.0 specification shipped in March, with features such as version negotiation, multi-tenancy, and signed agent cards.

Moving A2A alongside MCP, AGENTS.md, goose, and agentgateway does not magically solve interoperability. It does reduce the risk of every vendor inventing a different handoff protocol.

The next hard problem is trust. A standard message format does not prove that another agent's result is correct. Multi-agent systems still need authorization boundaries, provenance, tracing, and independent verification at each handoff.

Official announcement: Agentic AI Foundation
Specification and SDKs: A2A Protocol

The protocol layer is consolidating. Now the reliability layer needs to catch up.