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 Infatoshi/excalidraw.py --skill claude-skillgit clone --depth 1 https://github.com/Infatoshi/excalidraw.pyWrote 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/infatoshi/excalidraw.py/claude-skill)<a href="https://agentmods.dev/skills/infatoshi/excalidraw.py/claude-skill"><img src="https://agentmods.dev/badge/skills/infatoshi/excalidraw.py/claude-skill/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/infatoshi/excalidraw.py/claude-skill"><img src="https://agentmods.dev/badge/skills/infatoshi/excalidraw.py/claude-skill.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 | $0.00033 | $0.00938 |
| Opus 5 | $0.00016 | $0.00469 |
| Sonnet 5 | $0.00007 | $0.00188 |
| Haiku 4.5 | $0.00003 | $0.00094 |
Grade A, and why
excalidraw-diagram 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 — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Excalidraw Diagram Generation
Workflow
- Write excalidraw JSON to
<name>.excalidraw - Render:
uv run python -m excalidraw <name>.excalidraw -o <name>.png - For multiple diagrams, use:
uv run python -m excalidraw --batch *.excalidraw --outdir rendered/
File Structure
{
"type": "excalidraw",
"version": 2,
"source": "claude",
"elements": [...],
"appState": {
"viewBackgroundColor": "#ffffff"
}
}
Available Shapes
rectangle,ellipse,diamond,line,arrow,freedraw,text
Shape Properties
{
"id": "unique_id",
"type": "rectangle",
"x": 100,
"y": 100,
"width": 150,
"height": 80,
"strokeColor": "#1e1e1e",
"backgroundColor": "#a5d8ff",
"fillStyle": "solid",
"strokeWidth": 2,
"strokeStyle": "solid",
"roughness": 0
}
Text Elements
{
"id": "label1",
"type": "text",
"x": 110,
"y": 110,
"width": 130,
"height": 60,
"text": "Multi-line\ntext here",
"fontSize": 16,
"fontFamily": 5,
"textAlign": "center",
"strokeColor": "#1e1e1e"
}
fontFamily: 1=hand-drawn, 2=normal, 5=monospace (use for technical diagrams)
Arrow/Line Elements
{
"id": "arrow1",
"type": "arrow",
"x": 100,
"y": 100,
"width": 0,
"height": 50,
"strokeColor": "#1971c2",
"strokeWidth": 2,
"roughness": 0,
"points": [[0, 0], [0, 50]]
}
Dashed Frames
{
"id": "frame1",
"type": "rectangle",
"strokeColor": "#2f9e44",
"backgroundColor": "transparent",
"strokeStyle": "dashed",
"roughness": 0
}
Color Palette
| Color | Stroke | Fill |
|---|---|---|
| Green | #2f9e44 | #b2f2bb |
| Orange | #f08c00 | #ffd8a8, #ffec99 |
| Red | #e03131 | #ffc9c9 |
| Blue | #1971c2 | #a5d8ff, #d0ebff |
| Purple | #9c36b5 | #e599f7, #eebefa |
| Grey | #868e96 | #dee2e6, #e9ecef |
Spacing Guidelines
- Title fontSize: 28-36
- Section headers: 20-24
- Body text: 12-16
- Minimum padding inside boxes: 10px
- Gap between sections: 20-30px
- Dashed frame padding: 20px inside content
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 · 133 lines · 33 tokens per session scan A 2c6fb0ef5186
excalidraw-diagram is a skill published in the GitHub repository Infatoshi/excalidraw.py (5 stars, last pushed 4mo ago), licensed MIT. It adds 33 tokens to every session and 938 once invoked, about $0.0002 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 2026-08-31.
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