Borrowing it
Nothing to install: this file belongs to Hainrixz/claude-webkit. 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/Hainrixz/claude-webkit/main/.claude/skills/building-components/SKILL.mdgit clone --depth 1 https://github.com/Hainrixz/claude-webkitWrote 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/hainrixz/claude-webkit/building-components)<a href="https://agentmods.dev/skills/hainrixz/claude-webkit/building-components"><img src="https://agentmods.dev/badge/skills/hainrixz/claude-webkit/building-components.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 5.1 | $0.00046 | $0.00485 |
| Opus 5 | $0.00023 | $0.00243 |
| Sonnet 5 | $0.00009 | $0.00097 |
| Haiku 4.5 | $0.00005 | $0.00049 |
Grade A, and why
building-components 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 6d 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:
- building-components — 100% identical, 0 lines differ
What it actually says
Building Components
When to use this skill
Use when the user is:
- Building new UI components (primitives, components, blocks, templates)
- Implementing accessibility features (ARIA, keyboard navigation, focus management)
- Creating composable component APIs (slots, render props, controlled/uncontrolled state)
- Setting up design tokens and theming systems
- Publishing components to npm or a registry
- Writing component documentation
- Implementing polymorphism or as-child patterns
- Working with data attributes for styling/state
References
- definitions.mdx - Artifact taxonomy (primitives, components, blocks, templates)
- principles.mdx - Core principles for component design
- accessibility.mdx - ARIA, keyboard navigation, WCAG compliance
- composition.mdx - Composable component patterns
- as-child.mdx - The as-child pattern for element polymorphism
- polymorphism.mdx - Polymorphic component patterns
- types.mdx - TypeScript typing patterns for components
- state.mdx - Controlled vs uncontrolled state management
- data-attributes.mdx - Using data attributes for styling and state
- design-tokens.mdx - Design token systems and theming
- styling.mdx - Component styling approaches
- registry.mdx - shadcn-style registry distribution
- npm.mdx - Publishing components to npm
- marketplaces.mdx - Component marketplace distribution
- docs.mdx - Writing component documentation
What ships with it
15 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/accessibility.mdx 18 KB
- references/as-child.mdx 7.0 KB
- references/composition.mdx 7.1 KB
- references/data-attributes.mdx 12 KB
- references/definitions.mdx 10 KB
- references/design-tokens.mdx 2.2 KB
- references/docs.mdx 6.2 KB
- references/marketplaces.mdx 5.8 KB
- references/npm.mdx 5.3 KB
- references/polymorphism.mdx 14 KB
- references/principles.mdx 4.1 KB
- references/registry.mdx 6.4 KB
- references/state.mdx 3.2 KB
- references/styling.mdx 8.8 KB
- references/types.mdx 5.7 KB
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.
- 6d ago First seen · 38 lines · 46 tokens per session scan A c26a17c53e59
building-components is a skill published in the GitHub repository Hainrixz/claude-webkit (225 stars, last pushed 16d ago), licensed MIT. It adds 46 tokens to every session and 485 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.
Other skills, from other repositories
chakra-ui-builder
Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…
frontend-visual-qa
Audits already-rendered web, landing-page, HTML deck/slide, browser tool/game, dashboard/admin, design-system, and desktop UIs using real-browser or native-app journeys, inspected screenshots, DOM geometry, responsive or projection viewports, and a bundled Playwright sweep. Use after UI implementation to find…
prototype-web
可点击的功能性 Web 原型, 含导航、英雄区、特性区、CTA.
animation-principles
Apply animation principles — easing, staging, follow-through — to one specific UI motion. Use when tuning how an animation feels. For product-wide duration and easing tokens use motion-system (design-systems); for a full interaction spec use micro-interaction-spec.
refactoring-ui
Audit and fix visual hierarchy, spacing, color, and depth in web UIs. Use when the user mentions "my UI looks off" (or amateur/unprofessional), "fix the design", "Tailwind styling", "color palette", "visual hierarchy", "design system", "spacing scale", or "component styling". Also trigger when building consistent…
moai-ref-ui-polish
UI polish and interface-completion reference: the small visual details — concentric border radius, optical alignment, shadow-vs-border, motion easing, typography smoothing, tabular numbers, icon stroke weight, hit areas — that separate polished interfaces from generic ones. Agent-extending skill that amplifies…