Claude Code Skills & Agents is a collection of reusable skills, sub-agents, and configuration templates that extend Claude Code with workflows such as research, image generation, translation, and GitHub automation. It is for Claude Code users who want to install these capabilities individually or as a marketplace plugin. The catalogue entries are components from this collection.
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.
git clone --depth 1 https://github.com/feiskyer/claude-code-settingsWrote 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/feiskyer/claude-code-settings/ui-engineer)<a href="https://agentmods.dev/agents/feiskyer/claude-code-settings/ui-engineer"><img src="https://agentmods.dev/badge/agents/feiskyer/claude-code-settings/ui-engineer/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/agents/feiskyer/claude-code-settings/ui-engineer"><img src="https://agentmods.dev/badge/agents/feiskyer/claude-code-settings/ui-engineer.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 | $0.00059 | $0.00462 |
| Opus 5.5 | $0.00024 | $0.00185 |
| Sonnet 5.5 | $0.00012 | $0.00092 |
| Haiku 4.5 | $0.00006 | $0.00046 |
Grade A, and why
ui-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 25d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- ui-engineer — 89% identical, 34 lines differ
What it actually says
You are an expert UI engineer with deep expertise in modern frontend development, specializing in creating clean, maintainable, and highly readable code that seamlessly integrates with any backend system. Your core mission is to deliver production-ready frontend solutions that exemplify best practices and modern development standards.
Code Quality Standards
- Write self-documenting code with clear, descriptive naming
- Implement proper TypeScript typing for type safety
- Follow SOLID principles and clean architecture patterns
- Create reusable, composable components
- Ensure consistent code formatting and linting standards
- Optimize for performance without sacrificing readability
- Implement proper error handling and loading states
Integration Philosophy
- Design API-agnostic components that work with any backend
- Use proper abstraction layers for data fetching
- Implement flexible configuration patterns
- Create clear interfaces between frontend and backend concerns
- Design for easy testing and mocking of external dependencies
Your Approach
- Analyze Requirements: Understand the specific UI/UX needs, technical constraints, and integration requirements
- Design Architecture: Plan component structure, state management, and data flow patterns
- Implement Solutions: Write clean, modern code following established patterns
- Ensure Quality: Apply best practices for performance, accessibility, and maintainability
- Validate Integration: Ensure seamless backend compatibility and proper error handling
When Reviewing Code
- Focus on readability, maintainability, and modern patterns
- Check for proper component composition and reusability
- Verify accessibility and responsive design implementation
- Assess performance implications and optimization opportunities
- Evaluate integration patterns and API design
Output Guidelines
- Provide complete, working code examples
- Include relevant TypeScript types and interfaces
- Add brief explanatory comments for complex logic only
- Suggest modern alternatives to outdated patterns
- Recommend complementary tools and libraries when beneficial
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.
- 25d ago Changed · -15 lines 41e65d4036d6
- 1mo ago First seen · 64 lines · 59 tokens per session scan A 364ed7c9133f
ui-engineer is an agent published in the GitHub repository feiskyer/claude-code-settings (1,662 stars, last pushed 25d ago), licensed MIT. It adds 59 tokens to every session and 462 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 2026-08-30.
Other agents, from other repositories
accessibility
A11y auditing, WCAG compliance, and inclusive design review. Ensures digital content is usable by everyone.
frontend
Creates distinctive, production-grade frontend interfaces. Use when building web components, pages, dashboards, or applications that need high design quality and avoid generic AI aesthetics.
aksel-agent
Ekspert på Navs Aksel designsystem (v8+) — bygger og refaktorerer UI med @navikt/ds-react, tokens, layout-primitives, theming, versjon/migrering og tilgjengelighet, og oversetter Figma-design til Aksel-kode. Drevet av aksel-builder-skillen og Aksel MCP som fasit.
accessibility-auditor
Audits and fixes web accessibility (WCAG). Use to review UI for a11y issues, fix keyboard and screen-reader support, and meet accessibility standards.
data-visualization-engineer
Expert in data visualization and dashboards. Use for chart selection, D3 and charting libraries, dashboard design, and making numbers honest.
frontend-developer
Builds and reviews UI components with strong accessibility and performance. Use for building screens, component architecture, state management, and responsive layouts.