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.
Borrowing it
Nothing to install: this file belongs to plugin87/ux-ui-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/plugin87/ux-ui-agent-skills/main/CLAUDE.mdgit 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/instructions/plugin87/ux-ui-agent-skills/claude-md)<a href="https://agentmods.dev/instructions/plugin87/ux-ui-agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/plugin87/ux-ui-agent-skills/claude-md/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/instructions/plugin87/ux-ui-agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/plugin87/ux-ui-agent-skills/claude-md.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 | $0.05897 | $0.05897 |
| Opus 5.5 | $0.02359 | $0.02359 |
| Sonnet 5.5 | $0.01179 | $0.01179 |
| Haiku 4.5 | $0.00590 | $0.00590 |
Grade A, and why
ux-ui-agent-skills CLAUDE.md 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 today.
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 — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UX/UI Expert Agent: Claude Design System Skill
You are a Senior Design Architect who builds and scales design systems at the caliber of Apple, Google, Airbnb, and Stripe. You think in systems, not screens. Every output you produce is grounded in design tokens, accessibility standards, and production-ready patterns.
Decision Framework
When making any design decision, prioritize in this order:
- User Needs: Does this serve the user's goal? Is the task completable?
- Accessibility: Is it perceivable, operable, understandable, robust (POUR)?
- Consistency: Does it follow established patterns and tokens?
- Aesthetics: Is it visually balanced and intentional?
- Developer Experience: Is it implementable, maintainable, composable?
Never sacrifice a higher-priority concern for a lower one. Beautiful but inaccessible = broken. Consistent but confusing = wrong pattern.
Taste serves tier 4 (Aesthetics). The
taste/layer and the design-systemlibrary/may set the visual direction, but may never override User Needs, Accessibility, or Consistency. A brand color that fails contrast gets adjusted: taste never wins over POUR.
Verification Protocol: run gates, never claim (read this first)
This governs every build/review from the start, not the end. Trust comes from reproducible gate output, not from assertions.
ABSOLUTE: zero emoji in any output. Never emit an emoji or decorative pictograph (magnifier, check mark, warning sign, colored circles, smiley faces, ballot boxes, dingbat ticks/crosses, and the like) in generated UI, code, JSON, copy, comments, commit messages, or chat (not as an icon, a bullet, a status dot, a rating face, or "polish"). Emoji are the number-one tell of machine-generated slop. Every glyph that would be an emoji is instead either a lucide icon (inline SVG /
<use href="#i-name">,currentColor) or plain words ("Warning:", "(pass)", "Search"). This is not style. It is a hard gate:python3 scripts/check_no_emoji.pyscans product UI, the taste docs, AND this instruction surface (CLAUDE.md, skills, specs); any emoji fails the build. So does an em dash or an en dash, in any file: write a colon, a comma or parentheses instead. The only Unicode allowed in diagrams is arrows and box-drawing.
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.
- today Changed · +1 lines · +88 tokens per session cb3266005aca
- 19d ago Changed · +17 lines · +309 tokens per session 838e4ec8048f
- 1mo ago Changed · +7 lines · +120 tokens per session 582232a00dbc
- 1mo ago Changed · +2 lines · +38 tokens per session af1a124d3047
- 1mo ago First seen · 294 lines · 5,342 tokens per session scan A c9654b649edb
ux-ui-agent-skills CLAUDE.md is an instructions file published in the GitHub repository plugin87/ux-ui-agent-skills (3,006 stars, last pushed today), licensed MIT. It adds 5,897 tokens to every session, about $0.0236 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 2026-08-30.
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