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With a stateless makeover, new MCP spec targets enterprise scale

Plus, a new policy for the AI protocol ensures features aren’t removed suddenly.

With a stateless makeover, new MCP spec targets enterprise scale

TL;DR

  • The Model Context Protocol (MCP) core is now stateless, moving from a stateful to a request/response protocol.
  • This statelessness aims to address scalability barriers and improve reliability for MCP servers.
  • Additional updates include Multi Round-Trip Requests, header-based routing, cacheable list results, authorization hardening, and a formal extensions framework.
  • A new deprecation policy provides at least 12 months' notice before feature removal, excluding critical security updates.
  • MCP is managed by the Agentic AI Foundation (AAIF) under the Linux Foundation, with contributions from major tech companies like Anthropic, OpenAI, Google, Microsoft, and Amazon.