Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Slash CommandsArea: what it touches
Internal ChangesKind: in v2.1.248,
What probably matters to youSection of the release
A /version slash command is compiled in with its enabled check fixed to false, so remote config cannot turn it on.
What
This build reports itself as 2.1.248, built 2026-08-27T19:29:54Z, from git sha 8c9482ad0510ad5e3c88f0ebe6f035ec148f73e2. The stamp is what the binary shows about itself everywhere it names its own version. The /version command that would surface it in a session is present but compiled with its enabled check hardwired to false, so it cannot be reached whatever remote config says.
Details
The stamp appears in the user agent, update messages, LSP client info, feedback and bug-report drafts, and the pre-trust security errors for the API-key, AWS auth-refresh, AWS credential-export and GCP auth-refresh helpers.
/version, described in the binary as showing this session's version with the note that autoupdate may have a newer one, is unavailable in this build and there is no flag or setting that turns it back on.
Evidence
BUILD_TIME: "2026-08-27T19:29:54Z",, 2026-08-27T19:29:54Z, x-environment-runner-version, Show this session's version (autoupdate may have a newer one)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added sinceA small documentation edit on get-started touched a line naming /version after this was published.<version>2.63.0</version>get-startedsee the edit
Confirmed sinceAnthropic's documentation has since written up /version, on Versions.url: https://platform.claude.com/docs/en/api/beta/skills/versionsapi/beta/skills/versionssee the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up /version, on Versions.
