A2A agents: interoperable AI agents (Agent2Agent protocol)

What is an A2A agent?

An A2A agent is an AI agent reachable through the A2A (Agent2Agent) protocol, an open standard run by the Linux Foundation. Where MCP connects an assistant to tools, A2A connects agents to each other: one agent calls another, hands it a task and follows its progress. Each agent publishes an agent card (/.well-known/agent-card.json) describing its skills, address and authentication.