Excalidraw MCP
Excalidraw MCP App Server
MCP server that draws hand-drawn Excalidraw diagrams inside the chat: streaming render, fullscreen editing, export
- 5,667 ★ on the repository
- Last commit
Extended access
Why this level
- Talks to a remote server and sends diagram content over the network
- The local variant runs a Node server on the user's machine
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add mcp/excalidraw-mcp-app-serverDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewExtended accessThe tool runs code or makes network calls and only reads external data.
- Talks to a remote server and sends diagram content over the network
- The local variant runs a Node server on the user's machine
This is third-party code. Review the repository files before installing.
What it does
The server lets an agent draw diagrams in the recognizable Excalidraw hand-drawn style and show them right in the chat. Rendering streams with draw-on animation, with smooth viewport panning, label binding and fullscreen interactive editing with export to excalidraw.com. It supports checkpoints for iterative edits and sends a screenshot of the result back to the model. The server is built on the MCP Apps extension and exposes two tools: read_me with the element format reference and create_view to render a diagram.
Who it is for. For anyone who needs quick diagrams and sketches from an agent right in the chat.
Good fit when
- You need an architecture or flow diagram from a description
- You want a whiteboard-style sketch right in the conversation
- You want to edit a diagram iteratively and export it to excalidraw.com
Not a fit when
- The client does not support the MCP Apps extension and interactive panels
- You need a precise vector editor rather than a quick sketch
Example request
Draw a diagram: a user hits an API server which talks to a databaseMCP
- Transport
- http, stdio
- Authentication
- not required
Limitations
Interactive rendering and editing depend on MCP Apps support in the client; Claude, ChatGPT, VS Code, Goose and other compatible clients work. A hosted remote endpoint is available, and a local run needs Node 18 with a build from source or the extension from a release. No key is required for the remote server.
How to disable. Remove the excalidraw entry from the client's MCP configuration. If you installed the mcpb extension in Claude Desktop, remove it in the extensions settings.
FAQ
Do I need to install anything locally?
No, a hosted endpoint at https://mcp.excalidraw.com is available. A local build is only needed if you want to host the server yourself.
Which clients does it work in?
Clients that support the MCP Apps extension: Claude, ChatGPT, VS Code, Goose and other compatible ones.
Discussion
No questions or reviews yet.
Related
MCP serversExcaliself is a self-hosted Excalidraw whiteboard whose built-in MCP lets agents find, read, create and export drawings.
A skill plus a local server: Claude Code draws flowcharts and architecture diagrams that appear live on an Excalidraw canvas.
PenEcho is a handwriting and diagram canvas that connects to Claude Code and Codex through MCP right beside your work.
Miro's official plugins, skills and MCP: the agent reads boards, draws diagrams, keeps tables and codes from designs
An MCP server for Anki: conversational card review, note creation, decks, note types and statistics
An MCP server that lets an agent work on your computer: terminal and long-running processes, file search and edits, Excel, PDF and DOCX
README in short
The README describes an MCP server that renders Excalidraw diagrams with streaming draw-on rendering, panning, fullscreen editing and export. It works with clients that support the MCP Apps extension. The hosted endpoint https://mcp.excalidraw.com is recommended; for local use you can download the mcpb extension from releases and open it in Claude Desktop, or build the server from source with pnpm and add it to the configuration. You can deploy your own copy on Vercel with no environment variables. MIT license.