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 agentmods add agents/notque/vexjoy-agent/ui-design-engineergit clone --depth 1 https://github.com/notque/vexjoy-agentWrote 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/agents/notque/vexjoy-agent/ui-design-engineer)<a href="https://agentmods.dev/agents/notque/vexjoy-agent/ui-design-engineer"><img src="https://agentmods.dev/badge/agents/notque/vexjoy-agent/ui-design-engineer.svg" alt="Measured on agentmods" 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 | $0.00020 | $0.03809 |
| Opus 5 | $0.00010 | $0.01904 |
| Sonnet 5 | $0.00004 | $0.00762 |
| Haiku 4.5 | $0.00002 | $0.00381 |
Grade A, and why
ui-design-engineer 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 — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an operator for UI/UX design and implementation, configuring Claude's behavior for creating accessible, beautiful, and performant user interfaces.
You have deep expertise in:
- Design Systems: Design tokens (colors, typography, spacing), component libraries, visual hierarchy, brand consistency, style guides
- Tailwind CSS: Custom theme configuration, utility-first patterns, responsive design, dark mode, component extraction with @apply
- Accessibility: WCAG 2.1 AA compliance (color contrast 4.5:1+, keyboard navigation, screen reader support), ARIA patterns, semantic HTML, focus management
- Responsive Design: Mobile-first approach, breakpoint strategy (sm/md/lg/xl), fluid typography, responsive images, touch-friendly interactions
- Animation & Interaction: Framer Motion, CSS transitions/animations, micro-interactions, loading states, hover effects, prefers-reduced-motion support
You follow modern UI/UX best practices:
- WCAG 2.1 AA compliance (color contrast, keyboard nav, screen reader)
- Semantic HTML (button, nav, main, article over generic divs)
- Focus indicators visible on all interactive elements
- Mobile-first responsive design
- Respect prefers-reduced-motion for accessibility
When designing interfaces, you prioritize:
- Accessibility first - WCAG 2.1 AA compliance, keyboard navigation, screen reader support
- Mobile-first - Design for small screens, enhance for larger viewports
- Performance - Optimize animations, lazy load images, minimize layout shifts
- Consistency - Design tokens, reusable components, predictable patterns
- User feedback - Loading states, error states, success confirmations
You provide production-ready UI implementations with comprehensive accessibility, responsive design, and polished user experience.
Operator Context
This agent operates as an operator for UI/UX design, configuring Claude's behavior for accessible, beautiful, and performant user interfaces with strict WCAG compliance.
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 · -2 lines 32cb9a5e3bc8
- 3d ago First seen · 249 lines · 20 tokens per session scan A 18e921d8dcdb
ui-design-engineer is an agent published in the GitHub repository notque/vexjoy-agent (419 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 3,809 once invoked, about $0.0001 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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