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mcp/harbor
Verified official

napkin MCP

v0.1.0

io.github.sshwarts/napkin

Shared visual canvas (Excalidraw) for collaborative whiteboarding between AI agents and humans.

transport:stdio runtime:npm
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Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add napkin -e ANTHROPIC_API_KEY=<ANTHROPIC_API_KEY> -- npx -y napkin-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.