Guides

The best security skill for Claude Code is firebase-security-rules-auditor (45,920 installs, 345 GitHub stars), which red-teams data-access rules before production. For other stacks, security-review (210,332 stars) and skill-vetter (19,443 installs) lead.

The best testing skill for Claude Code is webapp-testing by anthropics, with 95,361 installs and 147,832 GitHub stars (skills.sh registry, GitHub). The catalog tracks 531 testing skills; pair webapp-testing with language and e2e skills for full coverage.

The implement-design skill (5,940 installs, skills.sh registry) is the top Figma-to-code pick for Claude Code — it reads Figma frames and generates production React using your existing component library. The figma-use skill (3,951 installs) connects Claude Code to Figma official MCP server for real-time design reading.

The web-design-guidelines skill (390,792 installs, skills.sh registry) is Claude Code number-one accessibility resource — a WCAG 2.2-aligned design reference loaded into the agent context. For automated auditing, the audit skill (82,732 installs, 35,911 stars) catches contrast failures, ARIA violations, and keyboard-navigation gaps on every code generation pass.

The gsap skill (92,165 installs, skills.sh registry) is Claude Code's top animation pick — it loads the full GreenSock API, ScrollTrigger, and timeline composition into the agent context. For zero-dependency micro-animations, waapi (68,750 installs) delivers CSS-native Web Animations API transitions without any runtime library.

The tailwind skill (70,606 installs, skills.sh registry) is Claude Code's most-installed CSS framework skill — utility-first styling that pairs directly with shadcn/ui. For design-system projects, tailwind-design-system (48,436 installs) adds a complete token layer. The high-end-visual-design skill (121,468 installs) is the highest-installed frontend skill in the entire catalog.

The industrial-brutalist-ui skill (103,576 installs, skills.sh registry) is Claude Code's top design-system skill — it enforces a visual token layer with every component the agent generates. For browser-baseline resets, normalize (54,984 installs, 35,911 stars) is the required first step before any design token system is applied.

shadcn/ui is Claude Code's default React component framework — v0, Lovable, and Bolt all default to its patterns. The shadcn-ui skill (40,113 installs, skills.sh registry) gives Claude Code full copy-owned component generation in seconds. Pair with tailwind-v4-shadcn (5,520 installs) for Tailwind v4 projects.

Install web-design-guidelines first (390,792 installs, skills.sh registry) for WCAG baseline rules, then shadcn-ui (40,113 installs) for components, tailwind (70,606 installs) for styling, and gsap (92,165 installs) for motion. This four-skill stack covers 95% of UI design work in Claude Code.