MCP 2026-07-28 spec goes stateless to scale agent servers
lee_stott · x · 2026-07-29
The 2026-07-28 MCP specification is out with a major protocol redesign for agentic workflows.
Key changes include a stateless core, multi round-trip requests, header-based routing, cacheable list results, stronger authorization, a formal extensions framework, and updated Tier 1 SDKs. The maintainers also say MCP is seeing close to half a billion downloads per month across Tier 1 SDKs, with TypeScript and Python each surpassing 1 billion total downloads.
Related event: Anthropic's Major MCP Update Shifts to Stateless Architecture(22 posts)→
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