Content & Documentation

Mermaid Diagrams

Generate flowcharts, sequence diagrams, and architecture diagrams using Mermaid markup language.

Claude Code Cursor Copilot Codex Gemini CLI

Overview

Mermaid is a JavaScript-based diagramming tool that renders diagrams from text definitions. AI coding agents can generate various diagram types including flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, and Gantt charts.

Agents can analyze code architecture and generate corresponding diagrams, create sequence diagrams from API flows, build ER diagrams from database schemas, and produce flowcharts from business logic. The text-based format means diagrams are version-controlled alongside code.

Mermaid integrates natively with GitHub Markdown, Notion, Confluence, and many documentation platforms. Teams can use AI agents to automatically generate and update technical diagrams as the codebase evolves, keeping visual documentation in sync with implementation.

Who Is This For?

Generate architecture diagrams from codebase analysis
Create sequence diagrams from API endpoint flows
Build ER diagrams from database schema definitions
Produce flowcharts from complex business logic

Installation

Setup for Claude Code

npm install -D mermaid @mermaid-js/mermaid-cli

Configuration

// .mermaidrc
{
  "theme": "default",
  "themeVariables": {
    "primaryColor": "#6366f1",
    "primaryTextColor": "#fff",
    "lineColor": "#94a3b8"
  }
}