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7/30/2026
The original headline is 10 words: "MCP Goes Stateless: What the 2026-07-28 Spec Actually Changes"

The original headline is 10 words: "MCP Goes Stateless: What the 2026-07-28 Spec Actually Changes"

Original: MCP Goes Stateless: What the 2026-07-28 Spec Actually Changes

Short summary

The MCP 2026-07-28 specification removes the stateful handshake and session ID, making every request self-contained with its own protocol version and identity. This enables MCP servers to run on serverless or edge infrastructure without sticky routing or shared session stores. OAuth/OIDC hardening, cacheable tool lists, and a formal extensions framework for Tasks round out the release.

  • •MCP drops stateful sessions—requests are now self-contained and stateless
  • •Servers can run on serverless/edge without sticky routing or Redis session stores
  • •Multi-round-trip requests replace held-open connections; OAuth/OIDC hardened

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