ui.close
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.
Plugins can now list, register, and run slash commands, and open or close a UI surface
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.265.
In the changelogs
10Releases whose published page names ui.close.
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v2.1.280
New
ui.copycapability added to the plugin/hooks permission surfaceNew ui.copy capability added to the permission list plugins and hooks can request
found in this entry's text
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v2.1.280
ui.close hook chain now fires plugin-ask dismissal even with no handlers
Closing a plugin UI panel now also dismisses any pending 'ask' prompt for it, even with no close handlers set up
found in this entry's text
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v2.1.275
New plugin API method ui.panes with no permission check, wired end-to-end but never called by anything else in the bundle
New plugin API method ui.panes lets plugins list their own UI panels, with no permission check
found in this entry's text
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v2.1.268
UI-close/render engine adds cross-instance requestId guard
UI rendering now rejects events with a requestId from a different session instance
found in this entry's text
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v2.1.265
New plugin host APIs: command.list, command.register, command.run, ui.open, ui.close
Plugins can now list, register, and run slash commands, and open or close a UI surface
found in this entry's text, named in this entry
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v2.1.265
New pane-management system for plugin UI panels
Plugins can now open UI panels, capped per plugin, with a hook that can veto closing one
found in this entry's text, named in this entry
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v2.1.265
Functionhooks event registry expands: ui.open/ui.close, command.run/command.describe, classic.PreToolUse
Hooks system adds ui.open/ui.close and command.run/command.describe event types, and renames PreToolUse internally
found in this entry's text, named in this entry
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v2.1.265
Plugin runtime API gains command hooks and UI window controls
Plugins can now register and run their own commands and open or close their own UI windows
found in this entry's text
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v2.1.265
New "Panes" plugin UI surface added, wired to ui.open/ui.close hooks
A new 'Panes' UI system renders the windowed panes plugins open via ui.open/ui.close
found in this entry's text, named in this entry
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v2.1.265
Plugin SDK gains a windowed
ui.open/ui.closesurface, capped at 8 panes per plugin — no renderer found for the 'currently shown' selectorPlugins can now open persistent UI panes via ui.open/ui.close, capped at 8 panes per plugin
found in this entry's text, named in this entry
First cited
1The earliest release whose published evidence quoted ui.close was v2.1.265, 8 Sep 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
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.