2025-11-25-RC

This release marks the release candidate (RC) 2025-11-25 revision of the Model Context Protocol.

The specification is available in draft form.

For a detailed overview of changes, see 2025-11-25 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 prior version of the spec may remain in use for an undetermined amount of time.

Refer to the Version Negotiation documentation to learn about the process for clients and servers to determine the version of the protocol being used.