ui.open

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.

Releases whose published page names ui.open.

1. v2.1.304 19 Oct 2026
   Claude Test gains two more interface actions

   Claude Test's list of interface actions now includes ui.open and ui.resolve, alongside ui.log and ui.toast

   found in this entry's text

2. v2.1.290 5 Oct 2026
   Plugins now get a notice when their text is cut short

   Over-long plugin text is now shortened with an ellipsis and a notice, and long tool descriptions are cut instead of rejected

   found in this entry's text

3. v2.1.280 22 Sep 2026
   New ui.copy capability added to the plugin/hooks permission surface

   New ui.copy capability added to the permission list plugins and hooks can request

   found in this entry's text

4. v2.1.277 18 Sep 2026
   Plugin hook dispatch deep-copies input for a fixed set of UI/registration events

   Plugin hooks now receive a deep copy of the event payload for UI and registration events, not the original

   found in this entry's text

5. v2.1.275 17 Sep 2026
   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

6. v2.1.271 14 Sep 2026
   Plugin UI SDK gains open() modifiers plus scroll() and focus() actions

   Plugin UI SDK adds open() modifiers plus new scroll() and focus() actions

   found in this entry's text

7. v2.1.265 8 Sep 2026
   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

8. v2.1.265 8 Sep 2026
   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

9. v2.1.265 8 Sep 2026
   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

10. v2.1.265 8 Sep 2026
    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

11. v2.1.265 8 Sep 2026
    Plugin SDK gains a windowed ui.open/ui.close surface, capped at 8 panes per plugin — no renderer found for the 'currently shown' selector

    Plugins 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

The earliest release whose published evidence quoted ui.open 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.

The 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.