What it is
Two transcript debugging aids, raw tool inputs and exact wire block order, are computed but each sits behind its own gate.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.257.
Presence across releases
1Build by build
21One 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.
First cited
0No 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
0No 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 as | Reading | From | Until | Version installed |
|---|---|---|---|---|
| this account | on | 2026-09-12T19:15:05Z | 2026-09-23T08:55:05Z | v2.1.269 to v2.1.280 |
| anonymous | on | 2026-09-11T19:55:04Z | 2026-09-23T08:55:05Z | v2.1.269 to v2.1.280 |
| this account | off | 2026-09-12T19:13:54Z | 2026-09-12T19:13:54Z | v2.1.270 |
| this account | on | 2026-09-11T21:00:07Z | 2026-09-12T18:15:04Z | v2.1.269 |
| this account | off | 2026-09-11T20:55:57Z | 2026-09-11T20:55:57Z | v2.1.269 |
| this account | on | 2026-09-10T22:50:04Z | 2026-09-11T20:15:07Z | v2.1.268 to v2.1.269 |
| anonymous | off | 2026-09-08T21:35:04Z | 2026-09-11T19:35:04Z | v2.1.265 to v2.1.269 |
| this account | off | 2026-09-10T21:47:12Z | 2026-09-10T21:47:12Z | v2.1.268 |
| this account | no longer carried | 2026-09-10T21:46:45Z | 2026-09-10T21:46:45Z | v2.1.268 |
| this account | off | 2026-09-08T21:55:04Z | 2026-09-10T17:40:05Z | v2.1.265 to v2.1.267 |
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_humble, up to twelve of them.
tengu_humble_wandAuto mode now re-checks artifact facts to catch stale 'allow' verdicts from the server classifier v2.1.271
tengu_humble_zephyrTask-management reminders are now skipped in conversations that used the Brief tool v2.1.277
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.