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.
Flag server, over time
12
Read as
Reading
From
Until
Version installed
anonymous
on
2026-10-17T05:30:04Z
2026-10-22T06:25:04Z
v2.1.302 to v2.1.308
this account
on
2026-09-10T21:47:12Z
2026-10-22T06:25:04Z
v2.1.268 to v2.1.308
anonymous
no longer carried
2026-10-17T05:25:57Z
2026-10-17T05:25:57Z
v2.1.302
anonymous
on
2026-08-19T04:25:04Z
2026-10-17T05:10:04Z
v2.1.233 to v2.1.302
this account
no longer carried
2026-09-10T21:46:45Z
2026-09-10T21:46:45Z
v2.1.268
this account
on
2026-09-08T20:36:15Z
2026-09-10T17:40:05Z
v2.1.263 to v2.1.267
this account
no longer carried
2026-09-08T20:34:58Z
2026-09-08T20:34:58Z
v2.1.265
this account
on
2026-09-06T02:40:05Z
2026-09-08T18:45:05Z
v2.1.261 to v2.1.263
this account
no longer carried
2026-09-06T02:36:19Z
2026-09-06T02:36:19Z
v2.1.263
this account
on
2026-08-14T22:10:05Z
2026-09-06T01:55:04Z
v2.1.232 to v2.1.261
anonymous
no longer carried
2026-08-19T04:20:14Z
2026-08-19T04:20:14Z
v2.1.233
anonymous
on
2026-08-14T22:10:05Z
2026-08-19T03:45:04Z
v2.1.232 to v2.1.233
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.
First cited
1
The earliest release whose published evidence quoted tengu_cfc_in_product_permissions was v2.1.251, 28 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
ReleaseDateThe span that was quoted
v2.1.25128 Aug 2026tengu_cfc_in_product_permissions
Presence across releases
4
BuildsHow manyDatesReading
v2.1.152 – v2.1.24180 builds → 22 Aug 2026 ◆in the build
v2.1.242 – v2.1.2475 builds24 Aug 2026 → 26 Aug 2026 ○not in the build
v2.1.248 – v2.1.2502 builds27 Aug 2026 → 27 Aug 2026 ◆in the build
v2.1.251 – v2.1.30849 builds28 Aug 2026 → 22 Oct 2026 ○not in the build
Build by build
136
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.
