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 keysjoao/laws-of-ux-skills --skill laws-of-ux-reviewgit clone --depth 1 https://github.com/keysjoao/laws-of-ux-skillsWrote 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/keysjoao/laws-of-ux-skills/laws-of-ux-review)<a href="https://agentmods.dev/skills/keysjoao/laws-of-ux-skills/laws-of-ux-review"><img src="https://agentmods.dev/badge/skills/keysjoao/laws-of-ux-skills/laws-of-ux-review/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/keysjoao/laws-of-ux-skills/laws-of-ux-review"><img src="https://agentmods.dev/badge/skills/keysjoao/laws-of-ux-skills/laws-of-ux-review.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 | $0.00071 | $0.00924 |
| Opus 5.5 | $0.00028 | $0.00370 |
| Sonnet 5.5 | $0.00014 | $0.00185 |
| Haiku 4.5 | $0.00007 | $0.00092 |
Grade A, and why
laws-of-ux-review 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 2mo 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 — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Laws of UX — Review & Audit
Score existing UI code against all 30 Laws of UX and deliver prioritized, code-level fixes.
Process
Step 1: Read the Target
Read the component/page file(s) the user wants audited. If no file specified, ask which file or component to review.
Step 2: Score Each Law
Load references/ux-laws-complete.md from the parent laws-of-ux skill.
For each of the 30 laws, score:
| Score | Meaning |
|---|---|
| 2 | Compliant — law is properly applied |
| 1 | Partial — some application but incomplete or inconsistent |
| 0 | Violation — law is broken or not addressed where it should be |
| — | N/A — law doesn't apply to this component type |
Maximum score: 60 (all 30 laws fully compliant)
Step 3: Classify Findings
Group all non-compliant laws into severity tiers:
CRITICAL (score 0, high-impact laws): Laws that directly cause usability failures:
- Fitts's Law (unreachable/tiny targets)
- Doherty Threshold (no loading feedback)
- Hick's Law (overwhelming choices)
- Cognitive Load (too much at once)
- Jakob's Law (breaks conventions)
WARNING (score 0-1, medium-impact laws): Laws that degrade experience:
- Proximity, Common Region, Similarity (grouping issues)
- Miller's Law, Chunking (information overload)
- Goal-Gradient, Zeigarnik (missing progress)
- Von Restorff (nothing stands out)
SUGGESTION (score 1, polish laws): Laws that improve quality:
- Aesthetic-Usability (visual polish)
- Peak-End Rule (celebration states)
- Flow (minor interruptions)
- Parkinson's Law (time cues)
Step 4: Generate Report
Output this exact format:
# UX Audit: [Component/Page Name]
**Score: [X]/60** | **Grade: [A/B/C/D/F]**
| Grade | Range |
|-------|-------|
| A | 50-60 |
| B | 40-49 |
| C | 30-39 |
| D | 20-29 |
| F | 0-19 |
## Critical Issues ([count])
### [Law Name] — Score: 0/2
**Problem:** [What's wrong, referencing specific lines]
**Fix:**
```[language]
// Before (line XX)
[current code]
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.
- 2mo ago First seen · 129 lines · 71 tokens per session scan A 5b59b1958edd
laws-of-ux-review is a skill published in the GitHub repository keysjoao/laws-of-ux-skills (21 stars, last pushed 6mo ago), licensed MIT. It adds 71 tokens to every session and 924 once invoked, about $0.0003 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 2026-08-31.
laws-of-ux-review compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| laws-of-ux-reviewkeysjoao/laws-of-ux-skills | Skill | 21 | 6mo ago | MIT | A | 71 | Claude Code, Codex |
| product-enrichAlpacaLabsLLC/skills-for-architects | Skill | 402 | 3d ago | MIT | A | 39 | Claude Code |
| product-researchAlpacaLabsLLC/skills-for-architects | Skill | 402 | 3d ago | MIT | A | 44 | Claude Code |
| color-palette-generatorAlpacaLabsLLC/skills-for-architects | Skill | 402 | 3d ago | MIT | A | 41 | Claude Code |
| product-cut-sheetAlpacaLabsLLC/skills-for-architects | Skill | 402 | 3d ago | MIT | A | 55 | Claude Code |
| product-auditAlpacaLabsLLC/skills-for-architects | Skill | 402 | 3d ago | MIT | A | 44 | Claude Code |
| product-libraryAlpacaLabsLLC/skills-for-architects | Skill | 402 | 3d ago | MIT | A | 38 | Claude Code |