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 furkangonel/cowrangler --skill excalidrawgit clone --depth 1 https://github.com/furkangonel/cowranglerWrote 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/furkangonel/cowrangler/excalidraw)<a href="https://agentmods.dev/skills/furkangonel/cowrangler/excalidraw"><img src="https://agentmods.dev/badge/skills/furkangonel/cowrangler/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/furkangonel/cowrangler/excalidraw"><img src="https://agentmods.dev/badge/skills/furkangonel/cowrangler/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 | $0.00018 | $0.03359 |
| Opus 5 | $0.00009 | $0.01680 |
| Sonnet 5 | $0.00004 | $0.00672 |
| Haiku 4.5 | $0.00002 | $0.00336 |
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 — 323 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Excalidraw Diagram SOP
When to Use
- User wants a whiteboard-style diagram, flowchart, or sketch
- User says "draw in Excalidraw", "give me an Excalidraw file", "whiteboard diagram"
- User wants a rough, hand-drawn-look visualization they can edit further
Excalidraw JSON Schema
Every Excalidraw file is a JSON object with this top-level structure:
{
"type": "excalidraw",
"version": 2,
"source": "https://excalidraw.com",
"elements": [ /* array of elements */ ],
"appState": {
"gridSize": null,
"viewBackgroundColor": "#ffffff"
},
"files": {}
}
Element Types
Rectangle
{
"id": "rect1",
"type": "rectangle",
"x": 100,
"y": 100,
"width": 160,
"height": 60,
"angle": 0,
"strokeColor": "#1971c2",
"backgroundColor": "#d0ebff",
"fillStyle": "solid",
"strokeWidth": 2,
"strokeStyle": "solid",
"roughness": 1,
"opacity": 100,
"groupIds": [],
"roundness": { "type": 3 },
"seed": 1001,
"version": 1,
"versionNonce": 1001,
"isDeleted": false,
"boundElements": [{ "type": "text", "id": "text1" }],
"updated": 1,
"link": null,
"locked": false
}
Ellipse (Circle)
{
"id": "ellipse1",
"type": "ellipse",
"x": 300,
"y": 100,
"width": 120,
"height": 120,
"angle": 0,
"strokeColor": "#2f9e44",
"backgroundColor": "#d3f9d8",
"fillStyle": "solid",
"strokeWidth": 2,
"strokeStyle": "solid",
"roughness": 1,
"opacity": 100,
"groupIds": [],
"roundness": { "type": 2 },
"seed": 1002,
"version": 1,
"versionNonce": 1002,
"isDeleted": false,
"boundElements": [{ "type": "text", "id": "text2" }],
"updated": 1,
"link": null,
"locked": false
}
Text (standalone or bound inside a shape)
{
"id": "text1",
"type": "text",
"x": 110,
"y": 120,
"width": 140,
"height": 20,
"angle": 0,
"strokeColor": "#1971c2",
"backgroundColor": "transparent",
"fillStyle": "solid",
"strokeWidth": 1,
"strokeStyle": "solid",
"roughness": 1,
"opacity": 100,
"groupIds": [],
"seed": 1003,
"version": 1,
"versionNonce": 1003,
"isDeleted": false,
"text": "API Gateway",
"fontSize": 16,
"fontFamily": 1,
"textAlign": "center",
"verticalAlign": "middle",
"containerId": "rect1",
"originalText": "API Gateway",
"updated": 1,
"link": null,
"locked": false
}
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 · 323 lines · 18 tokens per session scan A f8a0c0eb2533
excalidraw is a skill published in the GitHub repository furkangonel/cowrangler (2 stars, last pushed 2d ago), licensed MIT. It adds 18 tokens to every session and 3,359 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 2026-08-31.
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