icon
A Claude Code settings key, read out of the shipped bundle. It was in the build from v2.1.284 and was gone by v2.1.309.
Artifact publishing now supports an icon field and retries automatically when the server rejects an unknown field
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.268.
In the changelogs
7Releases whose published page names icon.
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v2.1.275
Artifact publish no longer requires a favicon
Publishing an artifact no longer requires a favicon, only a file path
found in this entry's text
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v2.1.275
Artifact publish results now report whether the icon was accepted
Artifact publish results now say whether the icon you set was actually accepted
found in this entry's text
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v2.1.275
'icon' field replaces deprecated 'favicon' in artifact publish, with new writer-access disclosure on read/list
Artifact icon field replaces the deprecated favicon parameter, and read/list now shows write access
found in this entry's text, named in this entry
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v2.1.275
Artifacts tool: 'favicon' parameter deprecated in favor of 'icon'
Artifacts tool replaces the emoji 'favicon' field with a required, plain-word 'icon' field
found in this entry's text, named in this entry
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v2.1.275
Artifact publish now returns icon/favicon change status flags
Publishing an artifact now reports whether its icon was dropped, sent, or auto-derived as a favicon
found in this entry's text
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v2.1.268
Artifact publish gains an icon field and generalized upstream-rejected-field retry
Artifact publishing now supports an icon field and retries automatically when the server rejects an unknown field
found in this entry's text, named in this entry
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v2.1.268
New optional
iconparameter for artifacts, distinct from the emojifaviconArtifacts can now be given a plain icon label, separate from the emoji favicon
found in this entry's text, named in this entry
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
6Build by build
33One 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.