name: architecture-diagram description: Generate dark-themed SVG diagrams of software systems and cloud infrastructure as standalone HTML files with inline SVG graphics. Semantic component colors (cyan=frontend, emerald=backend, violet=database, amber=cloud/AWS, rose=security, orange=message bus), JetBrains Mono font, grid background. Best suited for software architecture, cloud/VPC topology, microservice maps, service-mesh diagrams, database + API layer diagrams, security groups, message buses — anything that fits a tech-infra deck with a dark aesthetic. If a more specialized diagramming skill exists for the subject (scientific, educational, hand-drawn, animated, etc.), prefer that — otherwise this skill can also serve as a general-purpose SVG diagram fallback. Based on Cocoon AI's architecture-diagram-generator (MIT). version: 1.0.0 author: Cocoon AI (hello@cocoon-ai.com), ported by Hermes Agent license: MIT dependencies: [] metadata: hermes: tags: [architecture, diagrams, SVG, HTML, visualization, infrastructure, cloud] related_skills: [concept-diagrams, excalidraw]

Architecture Diagram Skill

Generate professional, dark-themed technical architecture diagrams as standalone HTML files with inline SVG graphics. No external tools, no API keys, no rendering libraries — just write the HTML file and open it in a browser. rnal tools, no API keys, no rendering libraries — just write the HTML file and open it in a browser.## Scope

Best suited for: - Software system architecture (frontend / backend / database layers) - Cloud infrastructure (VPC, regions, subnets, managed services) - Microservice / service-mesh topology - Database + API map, deployment diagrams - Anything with a tech-infra subject that fits a dark, grid-backed aesthetic

Look elsewhere first for: - Physics, chemistry, math, biology, or other scientific subjects - Physical objects (vehicles, hardware, anatomy, cross-sections) - Floor plans, narrative journeys, educational / textbook-style visuals - Hand-drawn whiteboard sketches (consider excalidraw) - Animated explainers (consider an animation skill)

If a more specialized skill is available for the subject, prefer that. If none fits, this skill can also serve as a general SVG diagram fallback — the output will just carry the dark tech aesthetic described below.

Based on Cocoon AI's architecture-diagram-generator (MIT).

Workflow

User describes their system architecture (components, connections, technologies)
Generate the HTML file following the design system below
Save with write_file to a .html file (e.g. ~/architecture-diagram.html)
User opens in any browser — works offline, no dependencies

Output Location

Save diagrams to a user-specified path, or default to the current working directory:

./[project-name]-architecture.html

cified path, or default to the current working directory:

./[project-name]-architecture.html
```### Preview

After saving, suggest the user open it:
```bash
# macOS
open ./my-architecture.html
# Linux
xdg-open ./my-architecture.html

Design System & Visual Language

Color Palette (Semantic Mapping)

Use specific rgba fills and hex strokes to categorize components:

Component Type	Fill (rgba)	Stroke (Hex)
Frontend	`rgba(8, 51, 68, 0.4)`	`#22d3ee` (cyan-400)
Backend	`rgba(6, 78, 59, 0.4)`	`#34d399` (emerald-400)
Database	`rgba(76, 29, 149, 0.4)`	`#a78bfa` (violet-400)
AWS/Cloud	`rgba(120, 53, 15, 0.3)`	`#fbbf24` (amber-400)
Security	`rgba(136, 19, 55, 0.4)`	`#fb7185` (rose-400)
Message Bus	`rgba(251, 146, 60, 0.3)`	`#fb923c` (orange-400)
External	`rgba(30, 41, 59, 0.5)`	`#94a3b8` (slate-400)

Typography & Background

Font: JetBrains Mono (Monospace), loaded from Google Fonts
Sizes: 12px (Names), 9px (Sublabels), 8px (Annotations), 7px (Tiny labels)
Background: Slate-950 (#020617) with a subtle 40px grid pattern

<!-- Background Grid Pattern -->
<pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse">
  <path d="M 40 0 L 0 0 0 40" fill="none" stroke="#1e293b" stroke-width="0.5"/>
</pattern>

Technical Implementation Details

ill="none" stroke="#1e293b" stroke-width="0.5"/>

## Technical Implementation Details### Component Rendering
Components are rounded rectangles (`rx="6"`) with 1.5px strokes. To prevent arrows from showing through semi-transparent fills, use a **double-rect masking technique**:
1. Draw an opaque background rect (`#0f172a`)
2. Draw the semi-transparent styled rect on top

### Connection Rules
- **Z-Order:** Draw arrows *early* in the SVG (after the grid) so they render behind component boxes
- **Arrowheads:** Defined via SVG markers
- **Security Flows:** Use dashed lines in rose color (`#fb7185`)
- **Boundaries:**
  - *Security Groups:* Dashed (`4,4`), rose color
  - *Regions:* Large dashed (`8,4`), amber color, `rx="12"`

### Spacing & Layout Logic
- **Standard Height:** 60px (Services); 80-120px (Large components)
- **Vertical Gap:** Minimum 40px between components
- **Message Buses:** Must be placed *in the gap* between services, not overlapping them
- **Legend Placement:** **CRITICAL.** Must be placed outside all boundary boxes. Calculate the lowest Y-coordinate of all boundaries and place the legend at least 20px below it.

## Document Structure

The generated HTML file follows a four-part layout:
1. **Header:** Title with a pulsing dot indicator and subtitle
2. **Main SVG:** The diagram contained within a rounded border card
3. **Summary Cards:** A grid of three cards below the diagram for high-level details
4. **Footer:** Minimal metadata
ds:** A grid of three cards below the diagram for high-level details
4. **Footer:** Minimal metadata### Info Card Pattern
```html
<div class="card">
  <div class="card-header">
    <div class="card-dot cyan"></div>
    <h3>Title</h3>
  </div>
  <ul>
    <li>• Item one</li>
    <li>• Item two</li>
  </ul>
</div>

Output Requirements

Single File: One self-contained .html file
No External Dependencies: All CSS and SVG must be inline (except Google Fonts)
No JavaScript: Use pure CSS for any animations (like pulsing dots)
Compatibility: Must render correctly in any modern web browser

Template Reference

Load the full HTML template for the exact structure, CSS, and SVG component examples:

skill_view(name="architecture-diagram", file_path="templates/template.html")

The template contains working examples of every component type (frontend, backend, database, cloud, security), arrow styles (standard, dashed, curved), security groups, region boundaries, and the legend — use it as your structural reference when generating diagrams.