tengu_gleaming_rivest
A Claude Code feature flag, read out of the shipped bundle. It was in the build from v2.1.285 and was gone by v2.1.288.
A program asking Claude Code to re-initialize a session can now turn on prompt suggestions, if a remote setting allows it
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.285.
In the changelogs
2Releases whose published page names tengu_gleaming_rivest.
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v2.1.288
SDK prompt-suggestions opt-in now goes through a shared check
When a program restarts a session through the SDK, the check deciding whether to turn on prompt suggestions now runs through a shared helper
gate cited by this entry
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v2.1.285
Programs using the SDK can turn on prompt suggestions when restarting a session
A program asking Claude Code to re-initialize a session can now turn on prompt suggestions, if a remote setting allows it
gate cited by this entry
Gate readings
2| Release | Resolved | This account | Anonymous | Compiled default |
|---|---|---|---|---|
| v2.1.288 read on another version | Not enough to say | no value returned | no value returned | not a boolean we can read |
| v2.1.285 read on another version | Not enough to say | no value returned | no value returned | off |
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.
First cited
1The earliest release whose published evidence quoted tengu_gleaming_rivest was v2.1.285, 29 Sep 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.
Presence across releases
2Build by build
23One 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.