An emerging interoperability layer for agents to discover peers, exchange tasks, and collaborate—complementary to MCP’s tool-and-resource wiring.
While MCP standardizes how a client reaches tools and resources, A2A-style designs focus on agent-to-agent handoffs: delegation, capability advertisements, and secure message patterns across autonomous components.
Practical lens
Treat protocols like product choices: align transport, authz, and audit requirements with your responsible AI and human-in-the-loop policies before committing to multi-agent topologies.