MCP 2026-07-28 spec: stateless core, coming to Claude | Claude by Anthropic

The fifth spec release of the Model Context Protocol, MCP 2026-07-28, is live today. The latest spec moves MCP to a stateless core, while hardening authorization and graduating official extensions. Support is being rolled out across Claude products. What's new in MCP‍MCP recently surpassed 400M monthly SDK downloads, a 4x increase this year, and has become the industry standard for connecting AI a

[misshiki]

AnthropicがMCP 2026-07-28を発表。中核をステートレス化し、MCP Apps／Tasksを標準拡張化、OAuth 2.0・OIDC対応を強化。Claude各製品へ順次展開する。

[nguyen-oi]

MCPがステートレス化してサーバーレスで扱いやすくなるのはありがたい