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Excalidraw MCP App Server

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TypeScript
Hybrid

Excalidraw MCP App Server

MCP server that streams hand-drawn Excalidraw diagrams with smooth viewport camera control and interactive fullscreen editing.

Demo

Install

Works with any client that supports MCP Apps — Claude, ChatGPT, VS Code, Goose, and others. If something doesn't work, please open an issue.

Remote (recommended)

https://mcp.excalidraw.com

For apps that don't yet have an official integration, you can add a custom MCP / connector (naming can vary between apps).

Local

Option A: Download Extension

  1. Download excalidraw-mcp-app.mcpb from Releases

  2. Double-click to install in Claude Desktop

Option B: Build from Source

git clone https://github.com/excalidraw/excalidraw-mcp.git
cd excalidraw-mcp-app
pnpm install && pnpm run build

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "excalidraw": {
      "command": "node",
      "args": ["/path/to/excalidraw-mcp-app/dist/index.js", "--stdio"]
    }
  }
}

Restart Claude Desktop.

Related MCP server: Excalidraw MCP App Server

Usage

Example prompts:

Draw a cute cat using excalidraw
Draw an architecture diagram showing a user connecting to an API server which talks to a database

What are MCP Apps and how can I build one?

Text responses can only go so far. Sometimes users need to interact with data, not just read about it. MCP Apps is an official Model Context Protocol extension that lets servers return interactive HTML interfaces (data visualizations, forms, dashboards) that render directly in the chat.

See CONTRIBUTING.md for contribution, deployment, and release instructions.

Credits

Built with Excalidraw — a virtual whiteboard for sketching hand-drawn like diagrams.

License

MIT

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityMaintained
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Resources

Related MCP Connectors

Related MCP Servers

  • Excalidraw MCP App Server

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    Enables users to create and interact with hand-drawn sketches and architecture diagrams directly within chat interfaces using Excalidraw. It leverages the Model Context Protocol to provide interactive HTML visualizations with smooth viewport control and fullscreen editing capabilities.
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  • Excalidraw MCP App Server

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    Enables users to create and interact with hand-drawn Excalidraw diagrams featuring smooth viewport camera control and interactive fullscreen editing. It uses the MCP Apps extension to render collaborative virtual whiteboards directly within supported AI chat interfaces.
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