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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Feature flags

tengu_walnut_sconce

A Claude Code feature flag, read out of the shipped bundle. It has been in the build since v2.1.218, including the newest one read.

What it is

An alternate PR-review description exists but you'll always see the original one.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.219.

Presence across releases

ReleasesReadingDeclared typeDefault
2.1.245 – 2.1.250 5 releases never mined — —
2.1.218 – 2.1.243 25 releases in the build — bool:false

A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.

Gate readings

ReleaseResolvedThis accountAnonymousCompiled default
v2.1.221 read on another version Not enough to say no value returned no value returned on
v2.1.219 read on another version Not enough to say no value returned no value returned on

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.

Changelog entries naming it

  1. v2.1.221Review pages are protected from overwrite and live-edit

    Claude refuses to publish over or live-edit a page it identifies as a review page.

    named in this entry, gate cited by this entry

  2. v2.1.221PR review payloads accept an in-page approve stamp binding

    Review pages can carry an in-page approve button that gets validated when published.

    named in this entry, gate cited by this entry

  3. v2.1.221Approvable PR-review artifact pages, switched off in this build

    Approvable, stampable PR-review artifact pages are built in but completely unreachable in this build.

    gate cited by this entry

  4. v2.1.219PR-review artifact description has an alternate wording that cannot ship in this build

    An alternate PR-review description exists but you'll always see the original one.

    gate cited by this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every feature flag in the inventory starting tengu_walnut, up to twelve of them.

tengu_walnut_gablePublishing an artifact now strips all nested preview wrappers, not just the outermost one. 2.1.234 tengu_walnut_prismNo description from anybody. 2.1.161 tengu_walnut_spirePlugin eval checks your credentials first and aborts instead of failing every case. 2.1.198

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.