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Found 2,571 Skills
Use when integrating next-safe-action with TanStack Query (React Query) -- mutationOptions(), useMutation, ActionMutationError error handling, type guards, optimistic updates via query cache, query invalidation after mutations
Meta-skill for combining Three.js, GSAP ScrollTrigger, React Three Fiber, Motion, and React Spring for complex 3D web experiences. Use when building applications that integrate multiple 3D and animation libraries, requiring architecture patterns, state management, and performance optimization across the stack. Triggers on tasks involving library integration, multi-library architectures, scroll-driven 3D experiences, physics-based 3D animations, or complex interactive 3D applications.
Comprehensive guide for the TanStack ecosystem in React — Query (caching, mutations, prefetching, SSR), DB (collections, live queries, optimistic updates), Form (state, validation, fields), Router (file-based, type-safe navigation, search params, loaders), and Start (server functions, middleware, auth, SSR). Use when working with any TanStack library in a React/full-stack project. Don't use for non-TanStack data libraries (SWR, Apollo, RTK Query), non-React TanStack ports (Solid, Svelte), or backend-only work.
Library reference for @expo/ui SwiftUI components on iOS — covers Host boundaries, modifier composition, iOS 26 Liquid Glass and Human Interface Guidelines composition rules, layout/input/navigation/display catalogues, and ObservableState patterns. Use this skill whenever writing or reviewing React Native code that imports from @expo/ui/swift-ui or @expo/ui/swift-ui/modifiers — including new Expo apps adopting native SwiftUI views, migrations from React Native primitives to expo-ui, and code targeting iOS 26 features (Liquid Glass, GlassEffectContainer, sheet detents). Trigger even if the user does not explicitly mention "expo-ui" but is writing iOS-targeted Expo UI code that should bridge to SwiftUI.
TanStack Router best practices for type-safe routing, file-based routing, data loading, search params, and navigation in React. Use when building React SPAs with complex routing, implementing type-safe search params, setting up route loaders, integrating with TanStack Query, or configuring code splitting and preloading.
Verify and debug native, React Native, Expo, or Flutter apps on an iOS Simulator with agent-device. Use when an agent needs to launch an app, inspect its live UI, tap, type, scroll, validate a code change, collect failure evidence, or reproduce a workflow on an iPhone or iPad Simulator.
Publish your own work to 21st.dev and manage it from the terminal with the `21st` CLI (`@21st-dev/cli`): publish a React component to a team library, publish a CSS theme or a template listing, edit / unpublish / delete your published items, and read/replace your public profile page (bento board). Triggers when the user says "publish/share/upload this to 21st", "залей в наш регистр", "опубликуй компонент/тему/темплейт", "share with team", "make this reusable", "unpublish/edit/delete my component", "change its visibility", "add this to my 21st profile/bento", "update my profile page", "обнови мой профиль на 21st", "добавь блок в бенто". For finding and installing existing items use `21st-cli-use`; for turning a project's design tokens into a theme use `21st-design-sync`.
TypeScript and JavaScript standards. Use when writing TS/JS code. Covers strict mode, type patterns, error handling, imports, naming, testing, React conventions, and package management with bun.
Build native-feeling, benchmark-quality mobile app screens (Expo / React Native). Use when designing or implementing any mobile UI — screens, flows, onboarding, paywalls, tab bars, settings, empty states — or when polishing motion, typography, dark mode, or perceived performance. Enforces Apple HIG fidelity, semantic colors, native controls, purposeful Reanimated motion, a simulator-verified iteration loop, and a study-real-apps-first workflow (pairs with the Appllama MCP). Trigger on "build a screen", "make this screen better", "design the onboarding", "polish the UI", "make it feel native", or any mobile design/implementation task.
Headless UI for virtualizing large element lists at 60FPS in TS/JS, React, Vue, Solid, Svelte, Lit & Angular.
MUST activate to localize / internationalize a uiBundles/*/src/ React project: extract hardcoded user-facing strings into Custom Labels, wire i18next over the Platform SDK GraphQL backend, add a language to a localized bundle, or troubleshoot label rendering across locales. Triggers: user-facing string literals in .tsx/.jsx, a CustomLabels.labels-meta.xml, a src/i18n/ directory or label-manifest.ts, t(…) calls, or requests to 'translate / localize / internationalize / support another language.' Scope: authenticated UI Bundles only (B2E CustomApplication-bound, or in-core accessCheck-bound apps). DO NOT TRIGGER when: the bundle is a site (B2C/B2B) app bound to a DigitalExperienceConfig (site localization not yet supported), building app shell/UI or styling, reading/writing/refreshing records (use experience-ui-bundle-salesforce-data-access), generating a new bundle (use experience-ui-bundle-frontend-generate), deploying (use experience-ui-bundle-deploy), or authoring translations in Translation Workbench.
shadcn/ui component library for React with Tailwind CSS - copy-paste accessible components with full code ownership