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 CraftOS-dev/CraftBot --skill skilluigit clone --depth 1 https://github.com/CraftOS-dev/CraftBotWrote 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/craftos-dev/craftbot/skillui)<a href="https://agentmods.dev/skills/craftos-dev/craftbot/skillui"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/skillui/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/craftos-dev/craftbot/skillui"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/skillui.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 | $0.00193 | $0.01204 |
| Opus 5.5 | $0.00077 | $0.00482 |
| Sonnet 5.5 | $0.00039 | $0.00241 |
| Haiku 4.5 | $0.00019 | $0.00120 |
Grade A, and why
skillui 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 23d 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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SkillUI — Design-System Extraction
Extract a complete design system (color tokens, typography, spacing, fonts, layout, components) from any live website, public Git repo, or local codebase, then use the generated tokens to build interfaces that match it. Pure static analysis: no AI calls, no API keys.
Run npx -y skillui --help for the full option list.
When to use
Use this when the user wants new UI to look like an existing product or when they hand you a reference URL/repo. The typical flow is: extract with SkillUI → hand the generated tokens to the builder (agent-app-creator for Agent Apps, or frontend-design for standalone frontend). SkillUI produces the design language; the builder writes the code.
Prerequisites
- Node.js 18+ (already required by this project's toolchain).
- No install step needed — invoke via
npx -y skillui .... For repeated use you maynpm install -g skillui. - Ultra mode only (screenshots, animation/interaction/component analysis) needs Playwright + Chromium:
npm install playwright
npx playwright install chromium
If Playwright is missing, stick to default mode — it still returns colors, fonts, spacing, and typography.
Commands
npx -y skillui --url <url> # Analyze a live website (default: HTML/CSS static analysis)
npx -y skillui --dir <path> # Scan a local project (CSS/SCSS/TS/JS, Tailwind config, CSS vars)
npx -y skillui --repo <url> # Clone a public Git repo, then analyze it as a directory
Common flags:
| Flag | Purpose |
|---|---|
--mode ultra |
Playwright-powered: scroll screenshots, interaction states, CSS animations, layout + component fingerprinting |
--screens <n> |
Pages to capture in ultra mode (max 20) |
--out <path> |
Output directory |
--name <string> |
Override the extracted project name |
--format design-md|skill|both |
Control output format (default both) |
--no-skill |
Emit only DESIGN.md, skip the packaged .skill |
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.
- 23d ago First seen · 84 lines · 193 tokens per session scan A aedb766b77f2
skillui is a skill published in the GitHub repository CraftOS-dev/CraftBot (395 stars, last pushed today), licensed MIT. It adds 193 tokens to every session and 1,204 once invoked, about $0.0008 per session on Opus 5.5. 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 2026-09-24.
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