Versioning changeddocs/2026-07-28/learn/versioning

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Upstream edited this page at 20 Oct 2026 20:02 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 20 Oct 2026 20:07 UTC.

Upstream edited 20 Oct 2026 20:02 UTC

Recorded here 20 Oct 2026 20:07 UTC

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33The Model Context Protocol uses string-based version identifiers following the format

44`YYYY-MM-DD`, to indicate the last date backwards incompatible changes were made.

6<Info>

7 The protocol version will *not* be incremented when the

8 protocol is updated, as long as the changes maintain backwards compatibility. This allows

9 for incremental improvements while preserving interoperability.

10</Info>

6> [!NOTE]

8> The protocol version will *not* be incremented when the

9> protocol is updated, as long as the changes maintain backwards compatibility. This allows

10> for incremental improvements while preserving interoperability.

1111

1212## Revisions

1313