architecture-diagram

Original：🇺🇸 English

Translated

Dark-themed SVG architecture/cloud/infra diagrams as HTML.

12installs

Sourcenousresearch/hermes-agent

Added on2026-05-30

NPX Install

npx skill4agent add nousresearch/hermes-agent architecture-diagram

SKILL.md Content

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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.

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

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

svg

<!-- 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

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:

Draw an opaque background rect (
```
#0f172a
```
)
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:

Header: Title with a pulsing dot indicator and subtitle
Main SVG: The diagram contained within a rounded border card
Summary Cards: A grid of three cards below the diagram for high-level details
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.