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A bundled whiteboard skill gives you a shared canvas you sketch on and Claude draws back onto in orange.
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whiteboard
What
A bundled skill publishes a self-contained drawing canvas as an artifact. You sketch on it, press Send to Claude to republish it, and Claude answers by adding its own elements in orange ink.
Details
- Claude's additions go through a
merge-state.mjshelper rather than rewriting the board, so your strokes survive its edits. - Board state is a small JSON structure (
{v, els, savedAt, pingCount, ping}); marks that have already been answered are retired so the board does not accumulate stale annotations. - The skill may offer itself unprompted at most once per session.
- Everything read off the board is treated as untrusted data, not as instructions to follow.
- Whether it is offered at all depends on skill loading in your setup.
Evidence
name: whiteboard
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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v2.1.221
Whiteboard artifact gains a Submit button that saves without pinging Claude
Both mention whiteboard
-
v2.1.221
Whiteboard editing: multi-select, eight resize handles, theme toggle, text sizes
Both mention whiteboard
-
v2.1.221
Whiteboard hardening: permission verdicts, state sanitising, merge-state validation
Both mention whiteboard