Model Context Protocol (2026 revision)

A dated reading of what is claimed, reported, and independently verified in the current evidence.

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Ready

Primary summary from verified readiness

Evidence strength Strong

Decision

Human editorial judgment · 2026-08-20

Proceed with caution

Why: The direction (stateless, scalable, hardened OAuth, formal deprecation with 12-month windows) is mature and aligned with how we already run MCP, but the RC carries real breaking changes (session removal, error-code change, mandatory headers, Tasks redesign) and is not yet final — adopt the patterns, defer the version pin.
Next: Audit our MCP servers for reliance on the initialize handshake, Mcp-Session-Id, the -32002 error code, and Roots/Sampling/Logging; design new servers stateless-first now (read protocol version/capabilities from _meta, emit Mcp-Method/Mcp-Name) but pin to the 2025-11-25 spec for production until the 2026-07-28 final ships and Tier-1 SDKs validate. Re-test after the ten-week window.

Constraints

No named blocker is present in the current public projection.

Evidence summary

AI-assisted assembly

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Initial public reading