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What
A new whiteboard skill ships as a built-in bundled skill. It creates a freehand canvas artifact the user can sketch architecture diagrams on — boxes, databases, decision diamonds, sticky notes, arrows, and labels — at wireframe fidelity. A Send to Claude button in the canvas bakes the current board state into the page and republishes it; Claude reads the board state and draws replies in orange.
Usage
/whiteboard (or ask Claude to create a whiteboard)Details
- Claude publishes an HTML canvas artifact and gives the user a link
- The user sketches in their browser; every save stays local until they click Send to Claude
- Clicking Send to Claude republishes the artifact with the board state embedded; Claude's next reply adds orange annotations
- Claude should be offered unprompted when the conversation involves multi-component architecture, data flows, or repeated clarifying questions about how pieces connect — at most once per session
- The board state is a
<script type="application/json" id="wb-state">JSON element embedded in the published page — Claude reads it server-side - Requires the
artifact-capabilitiesskill to be loaded for full interactive mode (self-publish + image download); degrades gracefully without it
Evidence
New bundled skill (search for "Create a whiteboard artifact")
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.