MCP Servers

Excalidraw MCP Server

Enables AI agents to programmatically generate, edit, and view Excalidraw diagrams with real-time browser synchronization. It provides a suite of tools for adding shapes, text, and arrows to diagrams through natural language interactions.

README

Excalidraw MCP Component

An MCP (Model Context Protocol) server that enables AI agents to programmatically generate, edit, and view Excalidraw diagrams.

✨ Features

Diagram Generation: Create new diagrams from text descriptions
Real-time Preview: View changes instantly in the browser
Tool Integration: Explicit tools for adding shapes, text, arrows, and more
Bi-directional: Changes in the browser sync back to the agent context

📦 Components

@excalidraw-mcp/server: The core MCP server implementation with embedded HTTP/WebSocket server.

🚀 Quick Start

Prerequisites

Node.js >= 18
pnpm >= 9

Installation

# Clone the repository
git clone https://github.com/your-username/excalidraw-mcp.git
cd excalidraw-mcp

# Install dependencies
pnpm install

# Build packages
pnpm build

Running Locally

# Start the MCP server (includes web interface)
pnpm dev

Visit http://localhost:3100 to see the Excalidraw interface.

🤖 Using with Claude Desktop

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "excalidraw": {
      "command": "npx",
      "args": ["@excalidraw-mcp/server@latest"]
    }
  }
}

🛠️ Development

This project involves a monorepo structure using pnpm workspace.

packages/mcp-server: The MCP server and web interface

# Run tests (if applicable)
pnpm test

# Lint code
pnpm lint

📄 License

MIT

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