Agents Define Interoperability With A2A And MCP

This article explains two protocol families—Agent-to-Agent (A2A) and Model Context Protocol (MCP)—that architects use for multi-agent AI systems. It defines A2A for agent discovery, task delegation, and streaming, and MCP for host–client tool and resource access using JSON-RPC. The piece compares security trade-offs, recommends layering A2A over MCP, and provides guidance for building secure, scalable agent architectures.