Tip: Rearchitect MCP Servers for the Stateless 2026-07-28 Spec

WorkOS·medium signal

With the 2026-07-28 MCP spec making the protocol stateless, update servers to hand clients tracking identifiers and state objects instead of holding sticky sessions, route requests on the Mcp-Method header, and mark tools/list cacheable so clients skip re-fetching schemas. Use unpredictable IDs — Akamai flags predictable tracking IDs as a path to workflow hijacking and cross-tenant access — which then lets the server run behind a plain round-robin load balancer.