napkin

About napkin

Use napkin with your agent

claude mcp add napkin-mcp -- npx -y napkin-mcp

{
  "mcpServers": {
    "napkin-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "napkin-mcp"
      ]
    }
  }
}

Frequently asked questions

What is napkin?

napkin is an MCP (Model Context Protocol) server by sshwarts in the Autonomous Agents category. Shared visual canvas (Excalidraw) for collaborative whiteboarding between AI agents and humans.

How do I connect napkin to Claude, Cursor, or another MCP client?

Install napkin from its npm package (napkin-mcp) and register it under "mcpServers" in your client's MCP configuration — for example claude_desktop_config.json or Cursor's mcp.json — then restart the client.

Is napkin open source?

Yes — the source code is public at github.com/sshwarts/napkin, with 1 GitHub stars.

Can AI agents pay to use napkin?

Not yet through Loomal — napkin is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.