act
A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
A read-only subagent that analyses one artifact comment thread exists but stays off.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.227.
In the changelogs
4Releases whose published page names act.
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v2.1.277
New "act" driver API added for scripted interaction with plugin UI mounts
A new internal "act" API can programmatically drive Claude Code's plugin UI components for testing
found in this entry's text
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v2.1.275
Plugin test engine now exposes a UI-render client harness (
ui.mount/act)Plugin test engine used by
claude plugin testgains a UI-render test harness with mount/act/release methodsnamed in this entry, found in this entry's text
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v2.1.228
Gateway gains a second admission path for machine identities
The self-hosted gateway can admit machine identities that skip managed-settings policy entirely, off by default.
found in this entry's text
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v2.1.227
An artifact comment thread can be analysed by a new read-only subagent
A read-only subagent that analyses one artifact comment thread exists but stays off.
found in this entry's text
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
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
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 settings key does. All settings keys.