tengu_proactivity_selector
A Claude Code feature flag, read out of the shipped bundle. It has been in the build since v2.1.290, including the newest one read.
A --proactivity flag picks the proactivity level when Claude Code starts, and CLAUDE_CODE_DISABLE_PROACTIVITY turns the selector off
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.290.
In the changelogs
2Releases whose published page names tengu_proactivity_selector.
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v2.1.290
New --proactivity flag sets how much Claude does on its own at startup
A
--proactivityflag picks the proactivity level when Claude Code starts, andCLAUDE_CODE_DISABLE_PROACTIVITYturns the selector offgate cited by this entry, found in this entry's text
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v2.1.290
Proactive mode choice now survives worker restarts
In headless sessions, Claude Code now keeps your proactivity opt-in when the worker restarts
found in this entry's text
Gate readings
1| Release | Resolved | This account | Anonymous | Compiled default |
|---|---|---|---|---|
| v2.1.290 read on another version | Not enough to say | no value returned | no value returned | on |
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
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.
Presence across releases
1Build by build
6One 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.