tengu_cached_pebble
A Claude Code feature flag, read out of the shipped bundle. It was in the build from v2.1.302 and was gone by v2.1.304.
Claude Code has a new remote switch that falls back to off when the server sends nothing, and what it controls is not known
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.302.
In the changelogs
3Releases whose published page names tengu_cached_pebble.
-
v2.1.305
A remote switch was replaced by a new one, still with no known effect
A recently added server-controlled switch was swapped for a new one that falls back to off; what it controls is still unknown
gate cited by this entry, found in this entry's text
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v2.1.305
The switch for handling converted skills as plugins has a new name
The remote switch behind treating converted skills as plugins was renamed, and it is off unless set remotely or by the
convertedSkillsAsPluginssettinggate cited by this entry
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v2.1.302
A new server-controlled switch appears, with no known effect yet
Claude Code has a new remote switch that falls back to off when the server sends nothing, and what it controls is not known
gate cited by this entry, found in this entry's text
Gate readings
2| Release | Resolved | This account | Anonymous | Compiled default |
|---|---|---|---|---|
| v2.1.305 read on another version | Not enough to say | no value returned | no value returned | not a boolean we can read |
| v2.1.302 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_cached_pebble was v2.1.302, 16 Oct 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
7One 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.