MCP Stateless Core Redesign — Architectural Shift Removes Session State, Enabling Horizontal Scale for Agentic Tool Integrations
The Model Context Protocol is about to change in a fundamental way. The MCP 2026-07-28 specification release candidate — announced May 21, 2026 by lead maintainers David Soria Parra and Den Delimarsky — is the largest revision to the protocol since its launch. At the center of it is a single architectural decision that will ripple through every MCP server and client implementation in existence: MCP is going stateless. The formal specification ships July 28, 2026. Until then, this is a look at what’s coming and why it matters. ...