signal
A Claude Code settings key, read out of the shipped bundle. It was in the build from v2.1.301 and was gone by v2.1.302.
Org memory fetches can now be cancelled mid-flight instead of running to completion.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.223.
In the changelogs
7Releases whose published page names signal.
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v2.1.273
Tool-execution hook context object substantially reworked
The context object passed to tool-execution hooks was substantially reworked with many new fields
found in this entry's text
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v2.1.265
Self-hosted runner session-exit result schema added
New internal schema describes how a self-hosted runner's session ended, with phase, exit code, and signal
found in this entry's text
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v2.1.225
Artifact publishes retry 429 and 503 with a live progress line
Artifact publishing now retries when the service is busy, showing a live attempt counter instead of failing.
found in this entry's text
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v2.1.223
Org memory backend lookups accept an abort signal
Org memory fetches can now be cancelled mid-flight instead of running to completion.
found in this entry's text
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v2.1.223
Connector list tools honour cancellation
Cancelling a turn now actually stops the connector listing request instead of letting it finish.
found in this entry's text
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v2.1.124
Auto-mode classifier timeout cleanup
found in this entry's text
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v2.0.36
Enhanced Session End Handling
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
2Build by build
8One 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 settings key does. All settings keys.