Summary & Key Takeaways ​

• MCP 2.0, or the 2026-07-28 Model Context Protocol, has been rolled out. • The new specification introduces a stateless design, simplifying client and server implementations. • Stateless MCP reduces complexity compared to the older stateful version. • It makes MCP tools easier to audit and control, improving security. • Smaller models can now drive MCP tools more effectively. • Simon Willison developed mcp-explorer and datasette-mcp based on the new spec. • The protocol provides a standard way to expose tools to LLM agent frameworks.

Our Commentary ​

I'm genuinely excited about this shift to stateless MCP. Giving agents a full shell environment is a security nightmare, and this move makes tool integration much safer and more manageable. It feels like a step towards more robust and auditable agent systems, which is exactly what we need as these technologies mature. Simon's immediate dive into building tools around it really shows its potential.