@cynosure-mcp/mermaid-diagrams

MCP server for rendering Mermaid.js diagrams to images — flowcharts, sequence diagrams, Gantt charts, and more.

Installation

npx @cynosure-mcp/mermaid-diagrams

Or install globally:

npm install -g @cynosure-mcp/mermaid-diagrams
mermaid-diagrams

Tools

| Tool | Description | | ---------------- | -------------------------------------------------- | | render_diagram | Render a Mermaid diagram definition to a PNG image |

Supported Diagram Types

Flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, mind maps, timelines, git graphs, and block diagrams.

Configuration

| Variable | Required | Description | | -------------------- | -------- | ---------------------------------------------------------------- | | MERMAID_OUTPUT_DIR | No | Directory to save rendered diagrams (default: OS temp directory) |

MCP Config

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

License

MIT