{"slug":"a2a","kind":"tool","name":"A2A Protocol","category":"Agent-to-agent protocols","description":"An open protocol specification for communication between agent applications.","url":"https://a2a-protocol.org/","docs_url":"https://a2a-protocol.org/latest/","tags":"A2A,interoperability,protocol","details":{"purpose":"Design interoperable agent applications using the current official specification.","interfaces":"Official protocol and SDK documentation; consult current versioned bindings.","authentication":"Deployment-specific; follow the official security model.","pricing":"Free specification; hosting costs vary","open_source":"Yes; official project and SDKs","verification":"Official overview reviewed. SwarmIndex does not implement A2A in version 1."},"verified_at":"2026-10-14","status":"documented"}