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 espennilsen/pi --skill ui-reviewgit clone --depth 1 https://github.com/espennilsen/piWrote 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/espennilsen/pi/ui-review)<a href="https://agentmods.dev/skills/espennilsen/pi/ui-review"><img src="https://agentmods.dev/badge/skills/espennilsen/pi/ui-review.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00046 | $0.01349 |
| Opus 5 | $0.00023 | $0.00674 |
| Sonnet 5 | $0.00009 | $0.00270 |
| Haiku 4.5 | $0.00005 | $0.00135 |
Grade A, and why
ui-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 8d 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 — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Review
Systematic UI/UX review methodology for designs (in Penpot) and implementations (in code).
Process
- Understand context — what product, who are the users, what's the goal of this screen?
- Gather materials — pull the Penpot designs and/or the live implementation
- Run the checklist — score each category
- Report — use the structured output format
Review Checklist
1. Accessibility (WCAG 2.1 AA)
Color & Contrast
- Text contrast ≥ 4.5:1 against background (normal text)
- Text contrast ≥ 3:1 against background (large text ≥ 24px or 18.67px bold, equivalent to WCAG 18pt/14pt)
- UI component contrast ≥ 3:1 against adjacent colors (borders, icons, controls)
- Information not conveyed by color alone (use icons, patterns, labels too)
- Tested with color blindness simulation (protanopia, deuteranopia, tritanopia)
Keyboard Navigation
- All interactive elements reachable via Tab key
- Logical tab order (left-to-right, top-to-bottom, follows visual flow)
- Visible focus indicator on all focusable elements (no outline:none without replacement)
- Escape closes modals/dropdowns
- Enter/Space activates buttons and links
- Arrow keys navigate within composite widgets (tabs, menus, radio groups)
Screen Reader
- All images have meaningful alt text (or aria-hidden if decorative)
- Form inputs have associated labels (not just placeholder text)
- ARIA landmarks used (main, nav, aside, footer)
- Dynamic content changes announced (aria-live regions for toasts, errors)
- Headings follow a logical hierarchy (h1 → h2 → h3, no skipping)
Motion & Interaction
- Animations respect
prefers-reduced-motion - No content that flashes more than 3 times per second
- Touch targets ≥ 44x44px on mobile (WCAG 2.1 AAA — optional but recommended)
- Adequate time for timed interactions (or ability to extend)
2. Design System Compliance
- All colors from the token palette (no hex codes outside the system)
- Typography uses defined scale (no arbitrary font sizes)
- Spacing uses the 4px grid (no magic numbers)
- Components match design system variants (no custom one-offs)
- Icons from the approved set (Lucide)
- Border radius from token scale
- Shadows from token scale
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.
- 8d ago First seen · 156 lines · 46 tokens per session scan A 5062b24f99c7
ui-review is a skill published in the GitHub repository espennilsen/pi (116 stars, last pushed 15d ago), licensed MIT. It adds 46 tokens to every session and 1,349 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 2026-08-30.
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