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 Demerzels-lab/elsamultiskillagent --skill excalidrawgit clone --depth 1 https://github.com/Demerzels-lab/elsamultiskillagentWrote 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/demerzels-lab/elsamultiskillagent/excalidraw)<a href="https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/excalidraw"><img src="https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/excalidraw/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/demerzels-lab/elsamultiskillagent/excalidraw"><img src="https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/excalidraw.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 | $0.00027 | $0.01622 |
| Opus 5 | $0.00014 | $0.00811 |
| Sonnet 5 | $0.00005 | $0.00324 |
| Haiku 4.5 | $0.00003 | $0.00162 |
Grade A, and why
excalidraw 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 — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Excalidraw Diagram Generator
Generate beautiful hand-drawn style diagrams rendered as PNG images.
Workflow
- Generate JSON — Write Excalidraw element array based on what the user wants
- Save to file — Write JSON to
/tmp/<name>.excalidraw - Render —
node <skill_dir>/scripts/render.js /tmp/<name>.excalidraw /tmp/<name>.png - Send — Send the PNG via message tool with
filePath
Quick Reference
node <skill_dir>/scripts/render.js input.excalidraw output.png
Element Types
| Type | Shape | Key Props |
|---|---|---|
rectangle |
Box | x, y, width, height |
ellipse |
Oval | x, y, width, height |
diamond |
Decision | x, y, width, height |
arrow |
Arrow | connects shapes (see Arrow Binding below) |
line |
Line | x, y, points: [[0,0],[dx,dy]] |
text |
Label | x, y, text, fontSize, fontFamily (1=hand, 2=sans, 3=code) |
Styling (all shapes)
{
"strokeColor": "#1e1e1e",
"backgroundColor": "#a5d8ff",
"fillStyle": "hachure",
"strokeWidth": 2,
"roughness": 1,
"strokeStyle": "solid"
}
fillStyle: hachure (diagonal lines), cross-hatch, solid
roughness: 0=clean, 1=hand-drawn (default), 2=very sketchy
Arrow Binding (IMPORTANT)
Always use from/to bindings for arrows. The renderer auto-calculates edge intersection points — no manual coordinate math needed.
Simple arrow (straight, between two shapes)
{"type":"arrow","id":"a1","from":"box1","to":"box2","strokeColor":"#1e1e1e","strokeWidth":2,"roughness":1}
That's it. No x, y, or points needed. The renderer computes start/end at shape edges.
Multi-segment arrow (routed path with waypoints)
For arrows that need to go around obstacles, use absolutePoints with intermediate waypoints:
{
"type":"arrow","id":"a2","from":"box3","to":"box1",
"absolutePoints": true,
"points": [[375,500],[30,500],[30,127],[60,127]],
"strokeColor":"#1e1e1e","strokeWidth":2,"roughness":1
}
- First point = near source shape edge (will snap to actual edge)
- Last point = near target shape edge (will snap to actual edge)
- Middle points = absolute waypoint coordinates for routing
What ships with it
6 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 · 130 lines · 27 tokens per session scan A 01ac5f59b879
excalidraw is a skill published in the GitHub repository Demerzels-lab/elsamultiskillagent (10 stars, last pushed 4mo ago), licensed MIT. It adds 27 tokens to every session and 1,622 once invoked, about $0.0001 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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