Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mhattingpete/claude-skills-marketplace --skill architecture-diagram-creatorgit clone --depth 1 https://github.com/mhattingpete/claude-skills-marketplaceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mhattingpete/claude-skills-marketplace/architecture-diagram-creator)<a href="https://agentmods.dev/skills/mhattingpete/claude-skills-marketplace/architecture-diagram-creator"><img src="https://agentmods.dev/badge/skills/mhattingpete/claude-skills-marketplace/architecture-diagram-creator/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mhattingpete/claude-skills-marketplace/architecture-diagram-creator"><img src="https://agentmods.dev/badge/skills/mhattingpete/claude-skills-marketplace/architecture-diagram-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00045 | $0.00695 |
| Opus 5.5 | $0.00018 | $0.00278 |
| Sonnet 5.5 | $0.00009 | $0.00139 |
| Haiku 4.5 | $0.00005 | $0.00069 |
Grade C, and why
architecture-diagram-creator scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
<!-- System Architecture Layers --> How it starts
The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Architecture Diagram Creator
Create comprehensive HTML architecture diagrams with data flows, business context, and system architecture.
When to Use
- "Create architecture diagram for [project]"
- "Generate high-level overview"
- "Document system architecture"
- "Show data flow and processing pipeline"
Components to Include
- Business Context: objectives, users, value, metrics
- Data Flow: sources → processing → outputs with SVG diagram
- Processing Pipeline: multi-stage visualization
- System Architecture: layered components (data/processing/services/output)
- Features: functional and non-functional requirements
- Deployment: model, prerequisites, workflows
HTML Structure
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>[Project] Architecture</title>
<style>
body { font-family: system-ui; max-width: 1200px; margin: 0 auto; padding: 20px; }
h1 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 30px; }
.section { margin: 30px 0; }
svg { max-width: 100%; }
/* Use semantic colors: #4299e1 (data), #ed8936 (processing), #9f7aea (AI), #48bb78 (success) */
</style>
</head>
<body>
<h1>[Project Name] - Architecture Overview</h1>
<!-- Business Context Section -->
<!-- Data Flow Diagram (SVG) -->
<!-- Processing Pipeline (SVG) -->
<!-- System Architecture Layers -->
<!-- Features Grid -->
<!-- Deployment Info -->
</body>
</html>
SVG Pattern for Data Flow
<svg viewBox="0 0 800 400">
<!-- Data sources (left, blue) -->
<rect x="50" y="150" width="120" height="80" fill="#4299e1"/>
<!-- Processing (center, orange) -->
<rect x="340" y="150" width="120" height="80" fill="#ed8936"/>
<!-- Outputs (right, green) -->
<rect x="630" y="150" width="120" height="80" fill="#48bb78"/>
<!-- Arrows connecting -->
<path d="M170,190 L340,190" stroke="#666" stroke-width="2" marker-end="url(#arrow)"/>
</svg>
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 83 lines · 45 tokens per session scan C 7d506e3fc0be
architecture-diagram-creator is a skill published in the GitHub repository mhattingpete/claude-skills-marketplace (689 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 45 tokens to every session and 695 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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