tengu_cobalt_plinth_holly

A Claude Code feature flag, read out of the shipped bundle. It was in the build from v2.1.259 and was gone by v2.1.285.

Releases whose published page names tengu_cobalt_plinth_holly.

1. v2.1.285 29 Sep 2026
   Artifact pinning no longer depends on a server switch and defaults to on

   Artifact pinning is now on by default unless CLAUDE_CODE_ARTIFACT_PIN turns it off, with no server switch consulted

   gate cited by this entry

2. v2.1.285 29 Sep 2026
   Artifact pinning no longer waits on a remote switch

   Artifact pinning is now on by default in local sessions, and CLAUDE_CODE_ARTIFACT_PIN still overrides it

   gate cited by this entry

3. v2.1.269 11 Sep 2026
   CLAUDE_CODE_ARTIFACT_PIN gate gains an extra suppression condition

   Artifact pinning is now also suppressed for remote sessions when an additional internal check is true

   gate cited by this entry, found in this entry's text

4. v2.1.259 2 Sep 2026
   Artifact pin/unpin — gated off by default

   Artifacts gain full pin and unpin actions, wired end to end but off by default behind a gate with an env override.

   gate cited by this entry

5. v2.1.259 2 Sep 2026
   Artifact tool gains a publish-time 'pin' parameter, behind a flag

   The artifact publish action can offer a pin field, but it is refused outright in cloud sessions and otherwise depends on an env var or gate.

   gate cited by this entry

6. v2.1.259 2 Sep 2026
   Artifact pinning gated behind new flag, with richer relay error handling

   Pin and unpin go through a relay path with clearer failure messages, and a gated helper decides whether pinning is offered at all.

   gate cited by this entry

Two arms, because they disagree: this account is the one account this site reads and anonymous is a baseline with no identity attached. A reading says nothing about your account, and off cannot rule out a rollout both readings sit outside of. What these readings can and cannot show.

One row per unbroken stretch of one reading, newest first, from snapshots taken every twenty-five minutes or so. No longer carried is not off: it means the flag server stopped returning the gate at all, which is what a retired experiment looks like. The version column is what was installed when the reading was taken, not what caused it.

No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.

One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.