Which integrations are available for this server?

Enables the creation and editing of hand-drawn diagrams, sketches, and architecture visualizations directly within the chat through an interactive virtual whiteboard.

How do I use Excalidraw MCP App Server?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Excalidraw MCP App Server create a system architecture diagram for a web app" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

Excalidraw MCP App Server

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

Demo

Install

In claude.ai:

Go to Settings → Connectors → Add custom connector
Server URL: https://excalidraw-mcp-app.vercel.app/mcp
Done — start using Excalidraw in your conversations

Alternative: Local Server

Option A: Download Extension

Download excalidraw-mcp-app.mcpb from Releases
Double-click to install in Claude Desktop

Option B: Build from Source

git clone https://github.com/antonpk1/excalidraw-mcp-app.git
cd excalidraw-mcp-app
npm install && npm 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.

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"

Releasing a New Version

# 1. Make changes, commit, push
git add -A && git commit -m "..." && git push

# 2. Bump version in manifest.json and package.json

# 3. Rebuild
npm run build

# 4. Pack the .mcpb bundle
mcpb pack .

# 5. Create GitHub release with bundle attached
gh release create v0.2.0 excalidraw-mcp-app.mcpb --title "v0.2.0" --notes "What changed"

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.

Getting started for humans: documentation
Getting started for AIs: skill