MCP Release 2026-07-28: What Changes, What Breaks, and What You Need to Do About It

The 2026-07-28 spec is the largest change to MCP since launch, and it carries breaking changes: the session handshake is removed, servers have to become formal OAuth 2.1 resource servers, extensions become first-class, and features like Sampling and Roots are now deprecated. Some of these change session-based architectures the day the spec lands; others put you on a 12-month migration clock.

In this 30-minute recording:

• → What's actually changing across the protocol core, authorization, extensions, and deprecations
• → Why it matters, and which changes are urgent versus which you can stage
• → The tactical and strategic shifts your team needs to make to stay ahead of the migration
• → Demos, plus the questions attendees asked during live Q&A

Mateo Torres

Developer Advocate