A2A

A2A (Agent2Agent) is the open communication protocol enabling secure, cross-platform collaboration between specialized AI agents.

A2A, or Agent2Agent Protocol, is the open standard for AI agent interoperability, launched in April 2025 by Google and over 50 technology partners (e.g., Atlassian, SAP, MongoDB). It defines a standardized language for autonomous agents to discover capabilities, delegate tasks, and securely exchange information. The protocol leverages established web standards like HTTPS and JSON-RPC 2.0 to ensure enterprise-grade security and reliability. This framework breaks down silos, allowing a specialized fraud-detection agent, for example, to seamlessly coordinate with a customer-service agent, automating complex, multi-step workflows across diverse vendor ecosystems.

https://a2a-protocol.org