UX/UI Agent Skills is a set of instructions, design tokens, reusable components, accessibility rules, and design-system references that guide Claude in producing interface designs and code. It is intended for developers and designers who want framework-independent, token-based UI work with accessibility checks. The catalogue entries package these UX, UI, component, and validation workflows as Claude Code skills and related add-ons.
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 plugin87/ux-ui-agent-skills --skill grill-megit clone --depth 1 https://github.com/plugin87/ux-ui-agent-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/plugin87/ux-ui-agent-skills/grill-me)<a href="https://agentmods.dev/skills/plugin87/ux-ui-agent-skills/grill-me"><img src="https://agentmods.dev/badge/skills/plugin87/ux-ui-agent-skills/grill-me/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/plugin87/ux-ui-agent-skills/grill-me"><img src="https://agentmods.dev/badge/skills/plugin87/ux-ui-agent-skills/grill-me.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 | $0.00038 | $0.01379 |
| Opus 5.5 | $0.00015 | $0.00552 |
| Sonnet 5.5 | $0.00008 | $0.00276 |
| Haiku 4.5 | $0.00004 | $0.00138 |
Grade A, and why
grill-me 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Step 0 — is the kit here? This skill reads files from the kit. Check once:
ls ${CLAUDE_SKILL_DIR}/../../../tokens >/dev/null 2>&1 && echo KIT_OK || echo KIT_MISSINGOnKIT_MISSINGonly the skill folders were installed, which is whatnpx skills adddoes. Say so plainly, point the user atnpx ux-ui-agent-skills initor the plugin install, and stop. Do not guess the contents of a file you could not open.
The gates catch a screen built wrongly. Nothing in this repo catches a screen
built correctly from the wrong brief, and that is where the expensive rework
comes from: four eval runs scored 14/14 on the gates and still came back from
/critique as rework, every finding a decision no gate can see.
This command spends five minutes up front to remove that class of failure.
Target: $ARGUMENTS (the thing about to be built; if that is not clear, that is
itself the first question).
1. Read before you ask
Asking for something the repo already answers is noise, and it teaches the user that answering you is a waste of time. Before writing a single question:
- Look for an existing brief,
CLAUDE.md,BRIEF.md, or areference/folder. - Look for an existing theme:
${CLAUDE_SKILL_DIR}/../../../tokens/*.json,design-tokens.json,theme.css. If one exists, the theme question is answered — do not ask it. - Look at the neighbouring screens and components. Framework, conventions, and the component inventory are usually visible, not unknown.
Every question you keep after this pass is one the code genuinely cannot answer.
2. The bank — grouped by what no gate can see
Pick from these. Do not ask all of them.
Purpose and lead
- Who is this for, and what is the one task they came to finish?
- What is the first thing their eye should land on? (Four equal cards means the answer is "nothing", and that is a composition bug before it is a design.)
- What does success look like for them — what have they done when they leave?
Content reality
- What does this look like with zero items? With one? With four hundred?
- What is the longest string a real user will put in here — a 60-character project name, a nine-digit amount, an email with no spaces to break?
- Which numbers are real and which are placeholder? Placeholder that ships as real is a lie the user catches immediately.
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 Changed c54d1f38b6b9
- 10d ago First seen · 124 lines · 38 tokens per session scan A d045c17c7a05
grill-me is a skill published in the GitHub repository plugin87/ux-ui-agent-skills (2,012 stars, last pushed 6d ago), licensed MIT. It adds 38 tokens to every session and 1,379 once invoked, about $0.0002 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 2026-10-07.
Other skills, from other repositories
accessibility
Audit and improve web accessibility following WCAG 2.2 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible".
component-family-consistency
Buttons, inputs, badges and pills share radius, colour logic, shadow, border and spacing. Use when building or reviewing a component library.
modular-scale-typography
Ratio-based type scale where every size relates to the others. Use when defining font sizes or type tokens, or when typography feels arbitrary.
extract-design
Extract colours, typography, spacing, components and W3C design tokens from a live website with Dembrandt. Use when you need a site's real tokens or want to seed a design system from it.
data-display-and-selection
View modes, row selection, mass actions, sorting, filters, search and table patterns. Use when designing data tables, listings, file browsers or any collection.
modal-and-overlay-patterns
Modals, drawers, bottom sheets and popovers, each with its scope and blocking level. Use when designing dialogs, confirmations, side panels or action sheets.