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 rhuss/cc-slidev --skill diagram-designgit clone --depth 1 https://github.com/rhuss/cc-slidevWrote 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/rhuss/cc-slidev/diagram-design)<a href="https://agentmods.dev/skills/rhuss/cc-slidev/diagram-design"><img src="https://agentmods.dev/badge/skills/rhuss/cc-slidev/diagram-design/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/rhuss/cc-slidev/diagram-design"><img src="https://agentmods.dev/badge/skills/rhuss/cc-slidev/diagram-design.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 | $0.00000 | $0.02389 |
| Opus 5 | $0.00000 | $0.01195 |
| Sonnet 5 | $0.00000 | $0.00478 |
| Haiku 4.5 | $0.00000 | $0.00239 |
Grade A, and why
diagram-design 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 10d 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 — 303 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Diagram Design Philosophy
Core Principle: Semantic Redesign, Not Mechanical Conversion
Don't convert diagrams between formats. Redesign them.
Each diagram platform (Mermaid, PlantUML, Excalidraw) represents a different way of thinking visually. When creating multi-platform diagrams, analyze the slide's core concept and design platform-specific diagrams that leverage each tool's unique strengths.
Platform Comparison
| Platform | Best For | Visual Paradigm | Key Strengths | When to Use |
|---|---|---|---|---|
| Mermaid | Flow, process, sequences | Linear, structured | Clean syntax, real-time rendering, developer-friendly | Workflows, pipelines, state machines, API flows |
| PlantUML | Architecture, UML, formal models | Hierarchical, relational | Rich UML notation, component boundaries, deployment contexts | System architecture, class relationships, deployment diagrams |
| Excalidraw | Sketches, brainstorming, informal | Spatial, freeform | Hand-drawn style, flexible positioning, annotations | Whiteboard sessions, conceptual thinking, informal explanations |
Design Process
Step 1: Analyze Slide Semantics
Ask yourself:
- What is the core concept of this slide?
- Is it about:
- Process/Flow? (A→B→C progression)
- Structure/Architecture? (Components and relationships)
- Concept/Idea? (Abstract thinking, brainstorming)
- State/Lifecycle? (Transitions and conditions)
- Comparison? (Side-by-side options)
Step 2: Match to Platform Strengths
| Slide Semantic | Best Platform | Why |
|---|---|---|
| Process/workflow | Mermaid flowchart | Directional flow, clear entry/exit |
| API interactions | Mermaid sequence | Time-based message passing |
| System architecture | PlantUML component | Component boundaries, interfaces |
| Deployment topology | PlantUML deployment | Physical node placement |
| Class design | PlantUML class | Inheritance, relationships, methods |
| Brainstorming | Excalidraw sketch | Informal, flexible, annotatable |
| Conceptual relationships | Excalidraw spatial | Proximity, grouping, containers |
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.
- 10d ago First seen · 303 lines · 0 tokens per session scan A a9c48810e1c9
diagram-design is a skill published in the GitHub repository rhuss/cc-slidev (51 stars, last pushed 22d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,389 tokens. 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 2026-08-30.
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