MCP Mermaid

🚀 MCP Mermaid

Generate mermaid diagrams and charts dynamically with AI MCP. Additionally, you can use mcp-server-chart to generate charts, graphs, and maps.

✨ Features

• Fully support all features and syntax of Mermaid.
• Support configuration of backgroundColor and theme, allowing large AI models to output rich style configurations.
• Support exporting to png, svg, and mermaid formats, with validation for Mermaid to facilitate the model's multi - round output of correct syntax and graphics.

🚀 Quick Start

🤖 Usage

To use with Desktop APP, such as Claude, VSCode, Cline, Cherry Studio, etc., add the MCP server config below.

On Mac system

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

On Windows system

{
  "mcpServers": {
    "mcp-mermaid": {
      "command": "cmd",
      "args": [
        "/c",
        "npx",
        "-y",
        "mcp-mermaid"
      ]
    }
  }
}

You can also use it on aliyun, modelscope, glama.ai, smithery.ai or others with HTTP, SSE Protocol.

🚰 Run with SSE or Streamable transport

Installation

Install the package globally.

npm install -g mcp-mermaid

Server Startup

Run the server with your preferred transport option:

# For SSE transport (default endpoint: /sse)
mcp-mermaid -t sse

# For Streamable transport with custom endpoint
mcp-mermaid -t streamable

You can access the server at:

• SSE transport: http://localhost:3033/sse
• Streamable transport: http://localhost:3033/mcp

🎮 CLI Options

You can also use the following CLI options when running the MCP server. Get command options by running the CLI with -h.

MCP Mermaid CLI

Options:
  --transport, -t  Specify the transport protocol: "stdio", "sse", or "streamable" (default: "stdio")
  --port, -p       Specify the port for SSE or streamable transport (default: 3033)
  --endpoint, -e   Specify the endpoint for the transport:
                    - For SSE: default is "/sse"
                    - For streamable: default is "/mcp"
  --help, -h       Show this help message

🔨 Development

Install dependencies

npm install

Build the server

npm run build

Start the MCP server

npm run start

📄 License

MIT@hustcc.