Model Context Protocol10 min read
The 2026-07-28 Specification
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.
By David Soria Parra (Lead Maintainer), Den Delimarsky (Lead Maintainer)Model Context Protocol (MCP) Blog
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Originally published by Model Context Protocol (MCP) Blog on Jul 28, 2026.
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