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Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.280 ·

New ui.copy plugin API for writing to the clipboard

Plugins can now copy text to the terminal clipboard through a new ui.copy action

Group of 3 Use it now New Features
JSON All of v2.1.280
Use it nowTier: how much it should matter to you
4Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PluginsArea: what it touches
New FeaturesKind: in v2.1.280,
What probably matters to youSection of the release

Unclear What ui.copy actually lets a plugin or hook do is not stated beyond its name.

What

  • A new $.ui.copy plugin-facing function copies text to the clipboard using OSC 52 (a terminal escape sequence for clipboard access), restricted to the terminal surface. It declines with a reason (no-surface or no-clipboard) when there's no attached UI or the text is too long for an OSC 52 write.
  • A matching ui.copy control-protocol action was added to the client, sending the text and an optional surface identifier over the same channel used for actions like ui.focus.
  • ui.copy was added to the capability list used by the plugin/hooks worker sandbox, alongside existing capabilities like ui.open, ui.close, ui.panes, ui.blit, fs.read, and fs.write.

Why This gives plugins and hooks a sanctioned way to put text on the user's clipboard, gated by the same capability and sandbox system as other UI actions, instead of needing a workaround.

Read from
Names in the bundleui.copy
What the documentation says
Documented inclaude-code/plugins/mods/test
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat `ui.copy` actually lets a plugin or hook do is not stated beyond its name.

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