MCP 2026-07-28 is now the stable Model Context Protocol revision. Its biggest architectural change is a stateless, sessionless core designed to run more naturally on ordinary HTTP infrastructure.
That is a major improvement for protocol implementers. It does not make the work performed through MCP stateless.
Disclosure: AI tools assisted with editing this article. The Manor AI team reviewed the technical claims against the stable MCP specification, changelog, and referenced SEPs before publication.
What problem MCP solves
Before MCP, each AI host tended to invent its own adapters for files, databases, developer tools, and business systems. Every connection brought a new schema, discovery model, authentication flow, error model, and lifecycle.
