tengu_orford_ness
A Claude Code feature flag, read out of the shipped bundle.
It was in the build from v2.1.191 and was gone by v2.1.275.
Default false. Turns on sending error reports (logged errors, unhandled rejections and uncaught exceptions) to Datadog error tracking, with a per-process report cap. It is checked last: reporting also needs DISABLE_ERROR_REPORTING unset, the first-party API provider, a Claude Code version of at least 2.1.193, the allow_error_reporting policy check passing, and other internal checks.
Not Anthropic's. Written by Claude Opus 5.5 from reading the v2.1.274 bundle, and it can be wrong.
First seen v2.1.191 24 Jun 2026
Last seen v2.1.274 16 Sep 2026, gone by v2.1.275
Builds67 / 150on this box, as of v2.1.309
Written about — no changelog entry names it
v2.1.191in the build not in the build never minedv2.1.309
In the changelogs
0
No changelog entry here has ever named it. That is a statement about what has been written, not about the name: it has been in the build since v2.1.191 without anybody writing a line about it.
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
18
| Read as | Reading | From | Until | Version installed |
|---|
| anonymous |
off |
2026-10-17T05:30:04Z |
2026-10-23T00:05:05Z |
v2.1.302 to v2.1.309 |
| this account |
on |
2026-10-07T18:00:12Z |
2026-10-23T00:05:05Z |
v2.1.292 to v2.1.309 |
| anonymous |
no longer carried |
2026-10-17T05:25:57Z |
2026-10-17T05:25:57Z |
v2.1.302 |
| anonymous |
off |
2026-08-19T04:25:04Z |
2026-10-17T05:10:04Z |
v2.1.233 to v2.1.302 |
| this account |
off |
2026-10-07T17:59:34Z |
2026-10-07T17:59:34Z |
v2.1.293 |
| this account |
on |
2026-09-10T21:47:12Z |
2026-10-07T17:10:05Z |
v2.1.268 to v2.1.292 |
| 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 |
2026-08-22T13:25:05Z |
2026-09-06T01:55:04Z |
v2.1.233 to v2.1.261 |
| this account |
off |
2026-08-22T13:25:01Z |
2026-08-22T13:25:01Z |
v2.1.240 |
| this account |
on |
2026-08-18T18:55:06Z |
2026-08-22T12:15:05Z |
v2.1.233 |
| anonymous |
no longer carried |
2026-08-19T04:20:14Z |
2026-08-19T04:20:14Z |
v2.1.233 |
| anonymous |
off |
2026-08-14T22:10:05Z |
2026-08-19T03:45:04Z |
v2.1.232 to v2.1.233 |
| this account |
off |
2026-08-18T18:50:25Z |
2026-08-18T18:50:25Z |
v2.1.235 |
| this account |
on |
2026-08-14T22:10:05Z |
2026-08-18T17:30:05Z |
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
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.
Presence across releases
4
BuildsHow manyDatesReading
v2.1.191 – v2.1.24551 builds24 Jun 2026 → 25 Aug 2026 ◆in the build
v2.1.246 – v2.1.2526 builds25 Aug 2026 → 31 Aug 2026 ○not in the build
v2.1.257 – v2.1.27416 builds1 Sep 2026 → 16 Sep 2026 ◆in the build
v2.1.275 – v2.1.30932 builds17 Sep 2026 → 22 Oct 2026 ○not in the build
Build by build
105
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
v2.1.19124 Jun 2026·addedverdict: added · default unknown
v2.1.19325 Jun 2026·presentverdict: present · default unknown
v2.1.19526 Jun 2026·presentverdict: present · default unknown
v2.1.19629 Jun 2026·presentverdict: present · default unknown
v2.1.19730 Jun 2026·presentverdict: present · default unknown
v2.1.1981 Jul 2026·presentverdict: present · default unknown
v2.1.1992 Jul 2026·presentverdict: present · default unknown
v2.1.2003 Jul 2026·presentverdict: present · default unknown
v2.1.2013 Jul 2026·presentverdict: present · default unknown
v2.1.2026 Jul 2026·presentverdict: present · default unknown
v2.1.2037 Jul 2026·presentverdict: present · default unknown
v2.1.2048 Jul 2026·presentverdict: present · default unknown
v2.1.2058 Jul 2026·presentverdict: present · default unknown
v2.1.2069 Jul 2026·presentverdict: present · default unknown
v2.1.20710 Jul 2026·presentverdict: present · default unknown
v2.1.20813 Jul 2026·presentverdict: present · default unknown
v2.1.20914 Jul 2026·presentverdict: present · default unknown
v2.1.21014 Jul 2026·presentverdict: present · default unknown
v2.1.21115 Jul 2026·presentverdict: present · default unknown
v2.1.21216 Jul 2026·presentverdict: present · default unknown
v2.1.21317 Jul 2026·presentverdict: present · default unknown
v2.1.21418 Jul 2026·presentverdict: present · default unknown
v2.1.21519 Jul 2026·presentverdict: present · default unknown
v2.1.21620 Jul 2026·presentverdict: present · default unknown
v2.1.21721 Jul 2026·presentverdict: present · default unknown
v2.1.21822 Jul 2026·presentverdict: present · default unknown
v2.1.21924 Jul 2026·presentverdict: present · default unknown
v2.1.22024 Jul 2026·presentverdict: present · default unknown
v2.1.2213 Aug 2026·presentverdict: present · default unknown
v2.1.2224 Aug 2026·presentverdict: present · default unknown
v2.1.2235 Aug 2026·presentverdict: present · default unknown
v2.1.2247 Aug 2026·presentverdict: present · default unknown
v2.1.2257 Aug 2026·presentverdict: present · default unknown
v2.1.2268 Aug 2026·presentverdict: present · default unknown
v2.1.22710 Aug 2026·presentverdict: present · default unknown
v2.1.22811 Aug 2026·presentverdict: present · default unknown
v2.1.22912 Aug 2026·presentverdict: present · default unknown
v2.1.23113 Aug 2026·presentverdict: present · default unknown
v2.1.23213 Aug 2026·presentverdict: present · default unknown
v2.1.23314 Aug 2026·presentverdict: present · default unknown
v2.1.23417 Aug 2026·presentverdict: present · default unknown
v2.1.23518 Aug 2026·presentverdict: present · default unknown
v2.1.23619 Aug 2026·presentverdict: present · default unknown
v2.1.23719 Aug 2026·presentverdict: present · default unknown
v2.1.23820 Aug 2026·presentverdict: present · default unknown
v2.1.23921 Aug 2026·presentverdict: present · default unknown
v2.1.24022 Aug 2026·presentverdict: present · default unknown
v2.1.24122 Aug 2026·presentverdict: present · default unknown
v2.1.24224 Aug 2026·presentverdict: present · default unknown
v2.1.24324 Aug 2026·presentverdict: present · default unknown
v2.1.24525 Aug 2026·presentverdict: present · default unknown
v2.1.24625 Aug 2026·removedverdict: removed
v2.1.2571 Sep 2026·addedverdict: added · default unknown
v2.1.2581 Sep 2026·presentverdict: present · default unknown
v2.1.2592 Sep 2026·presentverdict: present · default unknown
v2.1.2603 Sep 2026·presentverdict: present · default unknown
v2.1.2614 Sep 2026·presentverdict: present · default unknown
v2.1.2636 Sep 2026·presentverdict: present · default unknown
v2.1.2658 Sep 2026·presentverdict: present · default unknown
v2.1.2668 Sep 2026·presentverdict: present · default unknown
v2.1.2679 Sep 2026·presentverdict: present · default unknown
v2.1.26810 Sep 2026·presentverdict: present · default unknown
v2.1.26911 Sep 2026·presentverdict: present · default unknown
v2.1.27012 Sep 2026·presentverdict: present · default unknown
v2.1.27114 Sep 2026·presentverdict: present · default unknown
v2.1.27214 Sep 2026·presentverdict: present · default unknown
v2.1.27315 Sep 2026·presentverdict: present · default unknown
v2.1.27416 Sep 2026·presentverdict: present · default unknown
v2.1.27517 Sep 2026·removedverdict: removed
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.
