Napkin MCP Server

by sshwarts Your server? Claim it

local only

Napkin runs on your own machine — the client starts it, so there is no endpoint to ping. 56 installs a week from npm. Last commit 6 May 2026.

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

Installs per day peak 30 · avg 6 · -38% w/w

a month agotoday

Installs / week

npm · napkin-mcp

Stars

0 open issues

6 May 2026

Last commit

no releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Napkin every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.napkin]
command = "npx"
args = ["-y", "napkin-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "napkin": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "napkin-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: ANTHROPIC_API_KEY (Anthropic API key — enables vision features (describe_elements). Optional).

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An infinite canvas where people and AI agents edit boards together. Every edit is undoable.

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Napkin — questions

Answers built from our own checks of this server.

Why is there no uptime for Napkin?

Napkin runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package napkin-mcp was installed 56 times last week.

How do I connect Napkin?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls napkin-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Napkin?

The npm package napkin-mcp was installed 56 times in the last week. Week over week that is -38%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Napkin open source?

Yes — it is published under the MIT licence, written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.