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diagram-generator

Generates architecture, database, and system diagrams using Mermaid syntax. Creates visual representations of system architecture, database schemas, component relationships, data flows, and standalone HTML exports.

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설치 방법 보기

포함된 파일(10)

  • SKILL.md6.8 KB
  • commands/diagram-generator.md117 B
  • hooks/post-execute.cjs878 B
  • hooks/pre-execute.cjs877 B
  • references/research-requirements.md474 B
  • rules/diagram-generator.md517 B
  • schemas/input.schema.json271 B
  • schemas/output.schema.json632 B
  • scripts/main.cjs1.8 KB
  • templates/implementation-template.md191 B

SKILL.md(원문)

설치하기 전에 에이전트에게 전달되는 지시 내용을 확인할 수 있습니다.

<identity> Diagram Generator — creates Mermaid diagrams and standalone HTML exports for architecture, schemas, flows, and all supported diagram types. </identity>

Diagram Types

TypeKeywordBest For
Flowchartflowchart TB/LRDecision flows, processes
SequencesequenceDiagramAPI interactions, protocols
ClassclassDiagramOOP structure, interfaces
StatestateDiagram-v2Lifecycle, state machines
ERerDiagramDatabase schemas
GanttganttProject timelines
PiepieDistribution, composition
MindmapmindmapHierarchical mind maps
TimelinetimelineChronological events
Git GraphgitGraphBranch visualization
KanbankanbanTask boards
QuadrantquadrantChart2x2 matrix

Processing Limits

  • File chunk limit: 1000 files per diagram (HARD LIMIT)
  • Visual limit: ~200 nodes max per diagram
  • Large codebases: split by subsystem/layer; generate overview first then details

Standalone HTML Output Mode

Trigger phrases: "export as HTML", "standalone diagram", "interactive diagram"

Generate a self-contained HTML file with embedded Mermaid.js CDN, dark/light toggle button, and responsive CSS (max-width: 1200px):

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>TITLE</title>
    <script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
    <script>
      mermaid.initialize({ startOnLoad: true, theme: 'dark' });
    </script>
    <style>
      body {
        font-family: system-ui;
        max-width: 1200px;
        margin: 2rem auto;
        background: #1e1e2e;
        color: #cdd6f4;
      }
    </style>
  </head>
  <body>
    <h1>TITLE</h1>
    <button
      onclick="let d=!d;mermaid.initialize({startOnLoad:false,theme:d?'dark':'default'});document.querySelector('.mermaid').removeAttribute('data-processed');mermaid.run()"
    >
      Toggle Theme
    </button>
    <div class="mermaid">MERMAID_CONTENT</div>
  </body>
</html>

Default: dark mode (background: #1e1e2e, color: #cdd6f4) Output: .claude/context/artifacts/diagrams/{subject}-{YYYY-MM-DD}.html

Output Location

  • Mermaid files: .claude/context/artifacts/diagrams/{subject}-{type}-{YYYY-MM-DD}.mmd
  • HTML files: .claude/context/artifacts/diagrams/{subject}-{YYYY-MM-DD}.html

Iron Laws

  1. Mermaid syntax only — no ASCII art or PlantUML.
  2. Never exceed 200 nodes per diagram.
  3. Never write diagrams outside .claude/context/artifacts/diagrams/.
  4. Label all non-obvious connections.
  5. Enforce 1000-file hard limit — chunk large codebases.

Mermaid Plugin Generation Pattern

Generate diagrams from code analysis using the Claude Code plugin pattern (ref: agentic-coding-school/mermaid-diagram-plugin):

Step 1: Analyze Codebase Structure

# Identify components to diagram
pnpm search:code "class|interface|module|service|component" | head -50

Step 2: Generate Mermaid Source

Use Claude to transform code analysis into diagram syntax. Always request a specific diagram type and scope:

"Generate a Mermaid flowchart TB of the authentication flow in src/auth/"
"Create an ER diagram for the database tables in prisma/schema.prisma"
"Make a sequence diagram for the API request lifecycle in src/api/"

Step 3: Render Interactive HTML

For standalone shareable diagrams, use the full HTML template:

// Plugin invocation pattern (from mermaid-diagram-plugin)
const mermaidContent = `
flowchart TB
  A[User Request] --> B{Auth Check}
  B -- Valid --> C[Route Handler]
  B -- Invalid --> D[401 Response]
  C --> E[Database Query]
  E --> F[Response]
`;

// Render to interactive HTML
const html = `<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>${title}</title>
    <script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
    <script>mermaid.initialize({ startOnLoad: true, theme: 'dark' });</script>
    <style>
      body { font-family: system-ui; max-width: 1200px; margin: 2rem auto;
             background: #1e1e2e; color: #cdd6f4; }
      .controls { margin-bottom: 1rem; }
      button { padding: 0.5rem 1rem; margin-right: 0.5rem; cursor: pointer; }
    </style>
  </head>
  <body>
    <h1>${title}</h1>
    <div class="controls">
      <button onclick="toggleTheme()">Toggle Theme</button>
      <button onclick="downloadSVG()">Download SVG</button>
    </div>
    <div class="mermaid">${mermaidContent}</div>
    <script>
      let dark = true;
      function toggleTheme() {
        dark = !dark;
        mermaid.initialize({ startOnLoad: false, theme: dark ? 'dark' : 'default' });
        document.querySelector('.mermaid').removeAttribute('data-processed');
        mermaid.run();
      }
      function downloadSVG() {
        const svg = document.querySelector('.mermaid svg');
        if (!svg) return;
        const blob = new Blob([svg.outerHTML], { type: 'image/svg+xml' });
        const a = document.createElement('a'); a.href = URL.createObjectURL(blob);
        a.download = '${title.replace(/\s+/g, '-')}.svg'; a.click();
      }
    </script>
  </body>
</html>`;

Step 4: Save Output

# Save interactive HTML to standard location
# .claude/context/artifacts/diagrams/{subject}-{YYYY-MM-DD}.html

Plugin Invocation from Agent

When an agent needs a diagram as part of a workflow:

// Invoke diagram-generator skill, then request specific type
Skill({ skill: 'diagram-generator' });

// Then describe what to diagram with context
// "Create a class diagram for src/lib/routing/ — show all classes and their relationships"

When to invoke

Skill({ skill: 'diagram-generator' }) for architecture diagrams, HTML exports, mindmaps, timelines, git visualizations, kanban boards, and quadrant charts.

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