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protocol

Agent2Agent

Google-announced protocol for agent-to-agent tasking, positioned as complementary to MCP.

Verified

Machine: https://api.zfinia.com/v1/graph/entities/a2a

Official links

Relationships

FromTypeToEvidence
evt-google-a2a-2025-04-09DISCUSSESa2aVerified
evt-google-a2a-githubDISCUSSESa2aObserved
evt-google-ap2-2025-09-16DISCUSSESa2aVerified
googleBUILDSa2aVerified

Recent events

  • Google announces the Agent Payments Protocol (AP2)

    On 16 September 2025 Google Cloud announced AP2, an open protocol developed with payments and technology firms so agents can initiate payments across methods. Google positions AP2 as usable as an extension of A2A and MCP, and as payment-agnostic rather than a stablecoin-only HTTP 402 overlay.

    VerifiedSource

  • Google publishes Agent2Agent as an interoperability bet

    Google Cloud Next 2025 introduced Agent2Agent (A2A), an open protocol for agents from different vendors to exchange tasks and results. Public materials position A2A as complementary to MCP: MCP connects a model to tools; A2A connects agents to other agents.

    VerifiedSource

  • Google publishes A2A in an open GitHub repository

    The google/A2A repository is the public implementation and specification surface for Agent2Agent. It does not replace MCP tool calling and it does not replace x402 or AP2 payments.

    ObservedSource

Source

verified · https://zfinia.com/methodology