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mermaid-live-mcp - From prompt to diagram in seconds MCP Server

@iishyfishyy

リポジトリ

基本情報

カテゴリ

AI とエージェント

トランスポート

stdio

作者

iishyfishyy

投稿者

Ishan Mishra

mermaid-live-mcp - From prompt to diagram in seconds MCP Server について

An MCP server that generates live Mermaid diagrams from any AI assistant. Claude, Cursor, and more.

#mermaid#diagrams#visualize#live#render#preview

mermaid-live-mcp - From prompt to diagram in seconds MCP Server の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

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

mermaid-live-mcp - From prompt to diagram in seconds MCP Server のツール

4

Generate a diagram from Mermaid.js syntax. Renders in live preview browser with SVG/PNG download options. Supports flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, and more.

Replace a diagram's Mermaid syntax and re-render it in the preview.

List all diagrams generated in this session.

Write a diagram's SVG to disk. PNG export is available via the browser download buttons.

概要

What is mermaid-live-mcp?

mermaid-live-mcp is an MCP (Model Context Protocol) server that lets you generate Mermaid diagrams from natural language prompts and preview them live in a browser. It renders diagrams in real-time via WebSocket and supports SVG/PNG export. This tool is intended for developers and AI assistant users who want to quickly create and iterate on diagrams.

How to use mermaid-live-mcp?

Install the server via npx and add it to your MCP client configuration (Claude Desktop, Cursor, Claude Code, or Windsurf). The server exposes four tools: generate_mermaid, update_diagram, list_diagrams, and export_diagram. Use generate_mermaid with your Mermaid syntax to open a live browser preview, then update or export as needed.

Key features of mermaid-live-mcp

  • Live browser preview with real-time WebSocket updates
  • SVG and PNG export via download buttons or tool
  • Supports all Mermaid diagram types
  • No page refresh needed for diagram updates
  • Four dedicated tools for diagram lifecycle

Use cases of mermaid-live-mcp

  • Quickly generate flowcharts from text descriptions
  • Iterate on sequence diagrams during design discussions
  • Export class diagrams as SVG for documentation
  • Build ER diagrams with live preview for database modeling
  • Create and manage multiple Gantt charts in a single session

よくある質問

1

What tools does the server provide?

The server provides `generate_mermaid` (create and preview), `update_diagram` (replace syntax and re-render), `list_diagrams` (list session diagrams), and `export_diagram` (save SVG to disk).

2

How do I install mermaid-live-mcp for Claude Desktop?

Add the MCP server configuration to your Claude Desktop config file located at `~/Library/Application Support/Claude/claude_desktop_config.json` on macOS, using the command: `npx -y mermaid-live-mcp`.

3

How does the live preview work?

The server opens a browser tab with the diagram rendered as SVG. Any updates to a diagram are pushed instantly to the browser via a WebSocket connection – no page refresh required.

4

Can I export diagrams as images?

Yes. You can download SVG or PNG from the live preview buttons, or use the `export_diagram` tool to write the SVG directly to disk.

5

What diagram types does mermaid-live-mcp support?

All standard Mermaid diagram types are supported, including flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, git graphs, mindmaps, timelines, and more.

コメント

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