Excalidraw MCP Server

The only Excalidraw MCP server with security hardening, inline diagram rendering, and real-time canvas sync. It runs locally over stdio via the published package.

People connecting security tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-02-08 · ★ 3 · #92 OF 182 MAINTAINED SECURITY · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Excalidraw

before you install - you'll need

Set EXCALIDRAW_API_KEY, CANVAS_SERVER_URL before connecting.

Claude Code

claude mcp add debu-sinha-excalidraw-mcp-server -- npx -y excalidraw-mcp-server

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "debu-sinha-excalidraw-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "excalidraw-mcp-server"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package excalidraw-mcp-server - unscoped; check the name against the project README before installing

registry namespace io.github.debu-sinha is GitHub-verified and matches the repo owner

03 · Who maintains Excalidraw

excalidraw is maintained by debu-sinha. It's the only MCP server we track from this author; the repo dates to Feb 2026.

04 · Facts

repository: github.com/debu-sinha/excalidraw-mcp-server
category: security - ranked #92 of 182 actively-maintained security servers as of 2026-08-25.
registry: io.github.debu-sinha/excalidraw (active, first published 2026-02-08)
packages: npm:excalidraw-mcp-server

05 · Excalidraw FAQ

What is Excalidraw?

The only Excalidraw MCP server with security hardening, inline diagram rendering, and real-time canvas sync. It runs locally over stdio via the published package.

Is Excalidraw still maintained?

Yes - as of 2026-08-25, its last commit was 2026-02-08. We re-verify nightly.

How do I install Excalidraw?

Run `npx -y excalidraw-mcp-server`. The README documents 2 environment variables (EXCALIDRAW_API_KEY, CANVAS_SERVER_URL) to set first. Set EXCALIDRAW_API_KEY, CANVAS_SERVER_URL before connecting. You can also paste the ready-made client config above.

Does Excalidraw run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

06 · Alternatives to Excalidraw

Alternatives to Excalidraw

Maintained security servers if Excalidraw isn't the fit.

Pairs well with

Servers that cover what Excalidraw doesn't - only shown when the pairing reason fits the companion.

More security MCP servers · Delego · Gradus Notation · Open Work Proof · Dep Diff MCP

More TypeScript MCP servers · Debug Bundle · Decantr Ai MCP Server · Lucairn MCP Server · Decodo MCP Server · see all