Diagrams.so MCP Server (Official): Install & Setup

Install Diagrams.so in Claude Code

Claude Code

claude mcp add diagrams-so -- npx -y @diagrams-so/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

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

Frequently asked questions

What does the Diagrams.so MCP server do?

Generate and edit draw.io cloud architecture diagrams from prompts, Terraform or Kubernetes manifests, fix Well-Architected warnings and export to SVG.

Is the Diagrams.so MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Diagrams.so run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Diagrams.so to Claude Code?

Run: claude mcp add diagrams-so -- npx -y @diagrams-so/mcp

More art & design MCP servers

View all

Luw.ai

Luvi-io/luw-mcp

Official Luw.ai server: redesign rooms, building exteriors and gardens from photos, render sketches and CAD views, edit images, and create walkthrough videos and 3D models. Runs locally via npx or hosted at mcp.luw.ai with sign-in.

Local + RemoteAccount neededTypeScript

Scenef

speedwarnsf/scenef-mcp

Read-only showtimes for California and Hawaii theaters, from repertory houses and 35mm/70mm screenings to chains, verified against each theater's calendar.

LocalAccount neededTypeScript

Swebsy

swebsy/MCP

Build and edit real websites from the coding agent you already pay for — no per-token AI fees. Browse the template catalogue, create and open a site, rewrite sections, add and link pages, insert blocks, keep reusable symbols in sync, screenshot any viewport, and export static HTML/CSS/JS. Drives an open Swebsy Studio tab over a local 127.0.0.1 WebSocket relay; nothing is proxied through our servers and Studio redacts secrets before anything crosses the bridge. Install via NPM: npx -y @swebsy/mcp setup

Local + RemoteFreeTypeScript

Rnv Color

RNVizion/rnv-color-mcp

Mix colors (including Kubelka-Munk paint physics), convert formats, generate harmonies and save named palettes, resolving hex, CSS and brand color names.

RemoteAccount neededPython

den

odd-Innocent/den_archi_mcp

Korean architecture, engineering and construction knowledge: KDS, KCS and KS standards, statutes and expertise in one graph, with answers citing clauses.

RemoteAccount neededPython

DiagramZu

yenchieh/diagramzu-mcp

Create Mermaid diagrams in a shared workspace, with version history, comments, embedding, presentation decks and diagram linting.

RemoteAccount neededTypeScript