Microsoft Agent Framework 1.0: Define Agent Topology in Version-Controlled YAML with A2A Cross-Runtime Protocol and MCP Tool Discovery

Microsoft DevBlogs·medium signal

Microsoft shipped Agent Framework 1.0 (April 3) as an open-source framework for .NET and Python with five multi-agent orchestration patterns (sequential, concurrent, handoff, group chat, Magentic-One), all supporting streaming, checkpointing, and human-in-the-loop. Agents are defined in YAML files with instructions, tools, memory config, and orchestration topology, then loaded with a single API call. A2A protocol enables cross-runtime agent collaboration; MCP enables dynamic tool discovery.