MCP Ships Today — Stateless Core, 6 Breaking Changes

🤖 AI Tool Alert — July 28, 2026

MCP Ships Today — Stateless Core, 6 Breaking Changes

The Model Context Protocol just shipped its largest revision since launch. This isn't a minor update:

What Changed

• Stateless protocol core — session handshake removed. Clients/servers communicate without server-side session state. Fundamentally changes how MCP integrations scale.


• New Tasks extension — first-class long-running, resumable operations. Start a job, disconnect, reconnect and check progress.


• New MCP Apps extension — standardized package manifest for MCP integrations.


• Auth hardening — formalized auth flows built into the spec. No more bolting on OAuth.


• Deprecated: Roots, Sampling, Logging — still work for now, 12-month sunset timeline.


• Formal deprecation policy — deprecated features get 12 months before removal.

Why It Matters

1. Your MCP integrations may need migration. Cursor, Claude Desktop, Continue — expect updates.
2. Tasks solves real pain. Long-running pipelines, batch processing, large codebase indexing over MCP — no more timeout hacks.
3. Auth is production-ready. Built-in token auth flows for MCP servers.

Concrete Use Case: CI/CD with MCP

Before: Session drops when CI runner times out, full rehandshake, lost job state, custom auth layer.
Today: Stateless reconnect (instant), Tasks for resumable jobs, built-in auth.

🔗 MCP Blog | Migration Guide | Stateless Explained