What they offer
Open protocol for communication and collaboration among agents built with different systems.
Ecosystem / Independent reference profile
Agent2Agent (A2A)
Agent interoperability protocol
Relationship to GC
GC delegation and authority boundaries may complement A2A communication; conformance or interoperability is not established.
Primary sources
Editorial status: Initial source-linked orientation. Detailed version-by-version crosswalk and independent source verification are pending. No formal relationship, certification, endorsement, or interoperability is asserted.