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VS Code

Diagrams MCP Server for VS Code

io.github.mohammad-emad-dev/diagrams-mcp-server

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

client:VS Code transport:stdio runtime:npm

Install Diagrams MCP Server in VS Code

.vscode/mcp.json

{
  "inputs": [
    {
      "type": "promptString",
      "id": "project-root",
      "description": "PROJECT_ROOT",
      "password": true
    },
    {
      "type": "promptString",
      "id": "diagrams-dir",
      "description": "DIAGRAMS_DIR",
      "password": true
    },
    {
      "type": "promptString",
      "id": "plantuml-server-url",
      "description": "PLANTUML_SERVER_URL",
      "password": true
    },
    {
      "type": "promptString",
      "id": "allow-remote-plantuml",
      "description": "ALLOW_REMOTE_PLANTUML",
      "password": true
    },
    {
      "type": "promptString",
      "id": "disable-remote-plantuml",
      "description": "DISABLE_REMOTE_PLANTUML",
      "password": true
    }
  ],
  "servers": {
    "diagrams-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "diagrams-mcp-server"
      ],
      "env": {
        "PROJECT_ROOT": "${input:project-root}",
        "DIAGRAMS_DIR": "${input:diagrams-dir}",
        "PLANTUML_SERVER_URL": "${input:plantuml-server-url}",
        "ALLOW_REMOTE_PLANTUML": "${input:allow-remote-plantuml}",
        "DISABLE_REMOTE_PLANTUML": "${input:disable-remote-plantuml}"
      }
    }
  }
}

VS Code prompts for each input the first time the server starts, so no secret is written to the file. VS Code docs

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