MCP 2026-07-28 Specification: transport going stateless
The 2026-07-28 Model Context Protocol specification is out, bringing a stateless protocol core, Multi Round-Trip Requests, header-based routing, cacheable list results, authorization hardening, a formal extensions framework, and updated Tier 1 SDKs.
Summary
The latest Model Context Protocol specification introduces a stateless core and several enhancements, including Multi Round-Trip Requests and improved authorization. These updates aim to streamline communication and expand functionality for developers working with the protocol.
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