Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add rhuss/cc-slidev/plugin install 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/excalidraw-generation)<a href="https://agentmods.dev/skills/rhuss/cc-slidev/excalidraw-generation"><img src="https://agentmods.dev/badge/skills/rhuss/cc-slidev/excalidraw-generation/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/excalidraw-generation"><img src="https://agentmods.dev/badge/skills/rhuss/cc-slidev/excalidraw-generation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00074 | $0.08076 |
| Opus 5 | $0.00037 | $0.04038 |
| Sonnet 5 | $0.00015 | $0.01615 |
| Haiku 4.5 | $0.00007 | $0.00808 |
Grade A, and why
Excalidraw Generation 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 — 1,063 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Excalidraw Generation Expert
Core Philosophy: Semantic redesign, not mechanical conversion. Think like both a presentation designer (clarity, accessibility, simplicity) and an artist (creative visual expression, spatial design, aesthetic beauty).
CRITICAL - Rendering Rule
ALWAYS use render-excalidraw.sh for SVG conversion - NO EXCEPTIONS
After creating Excalidraw JSON:
- Save JSON to
diagrams/<slug>.excalidraw - MUST render using:
${CLAUDE_PLUGIN_ROOT}/scripts/render-excalidraw.sh - NEVER attempt manual SVG conversion
- NEVER embed JSON in markdown - only reference the rendered SVG
The script handles all rendering automatically with excalidraw-brute-export-cli.
When to Use This Skill
Auto-trigger when:
- User explicitly requests: "create excalidraw diagram", "hand-drawn diagram", "sketch", "whiteboard"
- Slide content suggests conceptual/spatial relationships
- Architecture with nested components
- Brainstorming/ideation context
- Informal, approachable style needed
- Annotations and callouts would add value
Diagram type suitability:
- ✅✅✅ BEST: Conceptual relationships, architecture diagrams, mind maps, timelines, comparisons
- ✅✅ EXCELLENT: Flowcharts (with annotations), spatial layouts, nested structures
- ⚠️ OKAY: Sequence diagrams (prefer Mermaid instead)
- ❌ NOT RECOMMENDED: Formal UML (use PlantUML), state machines (use Mermaid)
Evidence-Based Design Constraints (HARD LIMITS)
These constraints are NON-NEGOTIABLE. Enforce strictly:
- Cognitive load: Maximum 9 elements (7±2 rule from cognitive psychology)
- Accessibility:
- Colorblind-safe palette ONLY: Blue #3b82f6 + Orange #f97316
- Minimum 4.5:1 contrast ratio for all text (WCAG AA)
- Never rely on color alone to convey information
- Minimal text: Under 50 words total per diagram
- One idea per diagram: If concept is complex, split into multiple diagrams
- Hand-drawn aesthetic: Roughness 1 for informal feel
Core Capabilities
1. Semantic Concept Extraction
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 · 1,063 lines · 74 tokens per session scan A 8a7304602351
Excalidraw Generation is a skill published in the GitHub repository rhuss/cc-slidev (51 stars, last pushed 21d ago), licensed MIT. It adds 74 tokens to every session and 8,076 once invoked, about $0.0004 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 2026-08-30.
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