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 ArabelaTso/Skills-4-SE --skill system-diagram-generatorgit clone --depth 1 https://github.com/ArabelaTso/Skills-4-SEWrote 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/arabelatso/skills-4-se/system-diagram-generator)<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/system-diagram-generator"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/system-diagram-generator/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/arabelatso/skills-4-se/system-diagram-generator"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/system-diagram-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector 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 | $0.00110 | $0.01273 |
| Opus 5 | $0.00055 | $0.00636 |
| Sonnet 5 | $0.00022 | $0.00255 |
| Haiku 4.5 | $0.00011 | $0.00127 |
Grade A, and why
system-diagram-generator scanned grade A with 0 findings 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 9d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.
System Diagram Generator
Generate clear, accurate visual representations of system structure using text-based diagram formats.
Quick Start
When a user requests a system diagram:
- Understand the system: Ask clarifying questions about components, relationships, and scope
- Choose the format: Select based on user preference or context (default to Mermaid for versatility)
- Select diagram type: Match the visualization to the information being conveyed
- Generate the diagram: Create the diagram code with clear labels and structure
- Provide context: Include a brief explanation of what the diagram shows
Format Selection
Mermaid (Default)
Use for most cases - renders in Markdown, GitHub, GitLab, and many documentation tools.
Best for:
- Quick visualizations
- Documentation in Markdown files
- GitHub/GitLab README files
- General-purpose diagrams
See: mermaid-patterns.md for examples
PlantUML
Use when detailed UML diagrams are needed or when working with Java/enterprise systems.
Best for:
- Detailed UML diagrams
- C4 architecture models
- Complex component relationships
- Enterprise documentation
See: plantuml-patterns.md for examples
Graphviz/DOT
Use for complex network topologies or when fine-grained layout control is needed.
Best for:
- Network diagrams
- Complex hierarchies
- Graph structures
- Custom layout requirements
See: graphviz-patterns.md for examples
Diagram Types
Architecture Diagrams
Show system components, services, databases, and their relationships.
Use when:
- Explaining system structure
- Documenting microservices
- Showing component dependencies
- Illustrating system boundaries
Key elements:
- Services/components (boxes)
- Databases (cylinders)
- External systems
- Communication protocols
- Data stores
Data Flow Diagrams
Illustrate how data moves through the system.
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.
- 9d ago First seen · 195 lines · 110 tokens per session scan A b0ee3f87021f
system-diagram-generator is a skill published in the GitHub repository ArabelaTso/Skills-4-SE (252 stars, last pushed 22d ago), licensed Apache-2.0. It adds 110 tokens to every session and 1,273 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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