The Model Context Protocol (MCP) is evolving from a developer-focused protocol for connecting AI models with tools and data into something much closer to production infrastructure for agentic applications. On July 28, 2026, the MCP team released the 2026-07-28 specification, introducing one of the biggest architectural changes since MCP launched: a stateless protocol core. The release also brings Multi Round-Trip Requests (MRTR), header-based routing, cacheable list responses, stronger authorization, a formal extensions framework, and updated Tier 1 SDKs. For teams building AI agents and MCP ...