2026-07-28 RC

This release marks the release candidate (RC) 2026-07-28 revision of the Model Context Protocol. The specification is available in draft form . For a detailed overview of changes, see 2026-07-28 draft changelog . Note To users and implementers: this specification is not final. Changes may be introduced between the RC and the final release. SDKs will adopt this version at their own pace, and the…