Draw.io MCP Server

Install

Manual install

{
  "mcpServers": {
    "drawio": {
      "command": "npx",
      "args": ["-y", "@drawio/mcp"]
    }
  }
}

This is third-party code. Review the repository files before installing.

What it does

The server from the draw.io team lets a model create diagrams and open them in the editor. The repository bundles several options. The App server, over the MCP Apps protocol, renders the diagram inline in chat as an interactive view, is hosted at mcp.draw.io and needs no install. The local tool server installs via npx and opens the diagram in the draw.io editor, understanding XML, CSV and Mermaid. The create_diagram and search_shapes tools let it find the right shape among tens of thousands of library entries and return a ready style string. Separately there are plugins for Claude Code, Codex CLI and GitHub Copilot: they save a .drawio file and on request export it to PNG, SVG or PDF with the XML embedded, so the export stays editable.

Who it is for. For developers, analysts and technical writers who need editable diagrams straight from an agent.

Example request

Build an architecture diagram of our service in draw.io and leave a file I can edit

Limitations

Inline rendering works only on hosts that support the MCP Apps extension; elsewhere the tool returns XML as text. The local tool server needs Node and npm. PNG, SVG and PDF export via the plugin runs through the draw.io desktop app; without it only the .drawio file and a link are available. In the hosted option the diagram content is sent to the draw.io server. Apache-2.0 licensed.

How to disable. Remove the drawio entry from your agent's MCP config. If you installed the plugin, remove it via /plugin.

MCP

Transport

stdio, http

Authentication

not required

Security check

• The local server runs via npx and writes files to disk
• The hosted option sends diagram content to the draw.io server

README in short

The README describes four ways to connect draw.io with assistants: a hosted App server with inline rendering, a local tool server that opens the editor, plugins for Claude Code, Codex CLI and GitHub Copilot, and a no-MCP option via project instructions. For each it lists where it works, which formats it supports and how it installs. The App server is available at mcp.draw.io, the tool server is published on npm as @drawio/mcp. The search_shapes tool searches shapes across tens of thousands of library entries and an icon service. Apache-2.0 licensed.

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