TonyBai

Jul 30, 2026 · Artificial Intelligence

MCP Protocol’s Biggest Update: State Eliminated, Claude Leads Adoption

The Model Context Protocol (MCP) released its most extensive revision on July 28, 2026, removing all stateful handshake and session mechanisms, introducing multi‑round‑trip requests, aligning authentication with OAuth 2.0/OIDC, deprecating legacy features, and seeing Anthropic’s Claude be the first product to adapt the new spec.