I've been seeing news everywhere that MCP just went stateless, but I had no clue what it means. So I decided to dig into it and write a blog post about it.
Stateless MCP for Beginners
The Model Context Protocol (MCP) connects AI assistants to tools, databases, and external applications. In the 2026-07-28 specification revision, MCP removed protocol-level sessions and became stateless.
That change makes remote MCP servers easier to operate. They can scale behind ordinary load balancers without sticky routing or a shared MCP session store. Clients can safely cache tool definitions, and agents get more control over which application resources they share.
But stateless does not mean MCP servers can no longer remember anything. A browser can still have open tabs, a database transaction can still have uncommitted changes, and a shopping cart can still hold items. The difference is how the client refers to that state.
