Diagrams MCP Server: Install & Setup

Install Diagrams in Claude Code

Claude Code

claude mcp add diagrams -- npx -y diagrams-mcp-server

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

{
  "mcpServers": {
    "diagrams": {
      "command": "npx",
      "args": [
        "-y",
        "diagrams-mcp-server"
      ]
    }
  }
}

Local-first MCP server for PlantUML and Mermaid diagrams with drift detection.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

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

Run: claude mcp add diagrams -- npx -y diagrams-mcp-server

reactive-resume/reactive-resume

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HeyPuter/puter

Puter MCP enables AI tools to interact with Puter: manage files, websites, workers, and more

pascalorg/editor

Create, inspect, validate, and save editable 3D building scenes with Pascal's MCP server.

JanDeDobbeleer/oh-my-posh

Validate oh-my-posh configurations and segment snippets against the official schema.

instantdb/instant

Create, manage, and update applications on InstantDB, the modern Firebase.

nhost/nhost

Let your users work with their own data through an AI assistant, limited to what they can see.