Agent-to-Agent Protocol

An open, vendor-neutral communication standard enabling secure, structured task delegation and collaboration between diverse, opaque AI agents via JSON-RPC over HTTP.

The Agent-to-Agent (A2A) Protocol is the open, vendor-neutral communication standard for multi-agent AI systems, initially launched by Google and now governed by the Linux Foundation with support from over 100 technology partners. It solves the critical interoperability problem by allowing disparate AI agents—regardless of their underlying framework or vendor—to discover each other and collaborate on complex, long-running tasks. A2A leverages established web standards (HTTP, JSON-RPC 2.0) and uses an 'Agent Card' (a JSON metadata file) for dynamic capability discovery, ensuring secure, scalable, and opaque collaboration without agents needing to share internal memory or proprietary logic.

https://github.com/a2aproject/A2A