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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One name

tengu_cobalt_plinth_bryony

A Claude Code feature flag, read out of the shipped bundle. It has been in the build since v2.1.273, including the newest one read.

Familyfeature flagFeature flags
Builds7of the 123 on this box
First seen v2.1.273 15 Sep 2026
Last seen v2.1.280 22 Sep 2026
Statusin the buildas of v2.1.280

What it is

Nobody has written a line about this one. It is not in any of Anthropic's reference tables and no changelog entry here carries a description of it. It is in the build, which is the whole of what this page can claim.

Presence across releases

1
BuildsHow manyDatesReading
v2.1.273 – v2.1.2807 builds15 Sep 2026 → 22 Sep 2026 in the build

Build by build

7

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.

BuildDateStateThe record behind it
v2.1.27315 Sep 2026·addedverdict: added · default bool:false
v2.1.27416 Sep 2026·presentverdict: present · default bool:false
v2.1.27517 Sep 2026·presentverdict: present · default bool:false
v2.1.27618 Sep 2026·presentverdict: present · default bool:false
v2.1.27718 Sep 2026·presentverdict: present · default bool:false
v2.1.27819 Sep 2026·presentverdict: present · default bool:false
v2.1.28022 Sep 2026·presentverdict: present · default bool:false

First cited

0

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.

Gate readings

0

No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.

Flag server, over time

10
Read asReadingFromUntilVersion installed
this account on 2026-09-15T22:00:06Z 2026-09-23T08:55:05Z v2.1.273 to v2.1.280
anonymous on 2026-09-15T20:35:04Z 2026-09-23T08:55:05Z v2.1.273 to v2.1.280
this account off 2026-09-15T21:55:04Z 2026-09-15T21:55:04Z v2.1.273
this account on 2026-09-15T20:35:04Z 2026-09-15T21:50:04Z v2.1.273
anonymous off 2026-09-15T18:50:05Z 2026-09-15T19:30:05Z v2.1.272
this account off 2026-09-15T18:50:05Z 2026-09-15T19:30:05Z v2.1.272
anonymous on 2026-09-15T18:48:42Z 2026-09-15T18:48:42Z v2.1.273
this account on 2026-09-15T18:48:42Z 2026-09-15T18:48:42Z v2.1.273
this account off 2026-09-15T01:35:04Z 2026-09-15T18:10:04Z v2.1.272
anonymous off 2026-09-15T01:10:04Z 2026-09-15T18:10:04Z v2.1.272

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.

Names beside it

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

tengu_cobalt_plinthPR review artifact pages can show a pinned button that approves the pull request from your GitHub account. v2.1.172 tengu_cobalt_plinth_alderClaude can now read back a published artifact's contents; browsing, multi-file publishing and deletion are built but off. v2.1.239 tengu_cobalt_plinth_aspenThe preview browser is locked to the local server and refuses to run if the lock fails. v2.1.247 tengu_cobalt_plinth_brackenYou could start a private artifact from a published template, but two server switches keep it shut here. v2.1.216 tengu_cobalt_plinth_burnetArtifact comment and subscription operations can each be switched on separately from the server. v2.1.268 tengu_cobalt_plinth_campionPublish checks could warn about page thumbnails, but the experiment is off. v2.1.251 tengu_cobalt_plinth_comfreyA new flag affects relay routing when reading published artifact files. v2.1.261 tengu_cobalt_plinth_damsonThe artifact tool's flat verbs are mapped to a canonical action shape, with a gate deciding which toolset is active. v2.1.257 tengu_cobalt_plinth_datavizThe chart skill hint now only appears if the dataviz skill is actually installed. v2.1.198 tengu_cobalt_plinth_directArtifact availability now hinges on one gate, and direct upload kicks in for create paths. v2.1.172 tengu_cobalt_plinth_fennelBot-driven sessions no longer relay artifact requests; they go direct or not at all. v2.1.247 tengu_cobalt_plinth_fernArtifact viewer drops a special-case upgrade from 'skip' to 'set' read status v2.1.174

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.

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