Web & Frontend

laguagu Bundle

Next.js App Router best practices covering file conventions, RSC boundaries, async APIs, data patterns, hydration errors, metadata, route handlers, image/font optimization, and bundling. Use when writing or reviewing Next.js code to prevent hydration errors, RSC violations, data waterfalls, and configuration mistakes.

laguagu Bundle

React and Next.js performance optimization guide from Vercel Engineering (70 rules in 8 categories). Use when writing, reviewing, or refactoring React/Next.js code to eliminate waterfalls, reduce bundle size, prevent re-renders, optimize Server Components, or fix performance bottlenecks. Triggers on data fetching, Promise.all, Suspense, useMemo, dynamic imports, bundle analysis, code-splitting, and rendering performance tasks.

laguagu Skill

Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".

laguagu Bundle

Guide for implementing smooth, native-feeling animations using React's View Transition API (the `ViewTransition` component, `addTransitionType`, and CSS view transition pseudo-elements). Use this skill whenever the user wants to add page transitions, animate route changes, create shared element animations, animate enter/exit of components, animate list reorder, implement directional (forward/back) navigation animations, or integrate view transitions in Next.js. Also use when the user mentions view transitions, `startViewTransition`, `ViewTransition`, transition types, or asks about animating between UI states in React without third-party animation libraries.

metabase-metabase Skill

Analyze React component source code to understand UI structure, then generate idiomatic Cypress E2E tests following Metabase conventions. Falls back to Playwright MCP browser exploration only when code reading and screenshot debugging are insufficient.

metabase-metabase Skill

Migrate Emotion styled-components to Mantine components with style props and CSS modules. Use when converting .styled.tsx files or removing @emotion imports from components.

metabase-metabase Skill

Add product analytics events to track user interactions in the Metabase frontend

metabase-metabase Skill

Deciding where frontend code lives — tier model, move mechanics, extension points, side effects, naming, and the traps. Use when moving code between modules, carving new modules, fixing boundary violations, adding a barrel or an endpoint, or reviewing module-shape decisions.

metabase-metabase Skill

Drive Metabase's UI with the Playwright MCP browser tools (mcp__playwright__browser_*). Covers the snapshot/act/check pattern, Mantine component pitfalls (Menu race, Select/MultiSelect, the Escape-closes-modal trap, portal scoping), and Metabase-specific login flows. Use whenever a session needs to interact with the Metabase UI through Playwright MCP.

trpc Skill

Entry point for all tRPC skills. Decision tree routing by task: initTRPC.create(), t.router(), t.procedure, createTRPCClient, adapters, subscriptions, React Query, Next.js, links, middleware, validators, error handling, caching, FormData.

trpc Skill

Deploy tRPC on WinterCG-compliant edge runtimes with fetchRequestHandler() from @trpc/server/adapters/fetch. Supports Cloudflare Workers, Deno Deploy, Vercel Edge Runtime, Astro, Remix, SolidStart. FetchCreateContextFnOptions provides req (Request) and resHeaders (Headers) for context creation. The endpoint option must match the URL path prefix where the handler is mounted.

trpc Skill

Full end-to-end tRPC setup for Next.js App Router. Covers route handler with fetchRequestHandler (GET + POST exports), TRPCProvider with QueryClientProvider, createTRPCOptionsProxy for RSC prefetching, HydrateClient/HydrationBoundary for hydration, useSuspenseQuery for Suspense, and server-side callers.

trpc Skill

Set up tRPC in Next.js Pages Router with createNextApiHandler, createTRPCNext, withTRPC HOC, SSR via ssr option and ssrPrepass, SSG via createServerSideHelpers with getStaticProps, and server-side helpers for getServerSideProps prefetching.

trpc Skill

Set up @trpc/tanstack-react-query with createTRPCContext(), TRPCProvider, useTRPC() hook, queryOptions/mutationOptions factories, query invalidation via queryClient.invalidateQueries with queryFilter, and type inference with inferInput/inferOutput.

trpc Skill

Migrate from @trpc/react-query (classic) to @trpc/tanstack-react-query. Run npx @trpc/upgrade CLI for automated codemod. Manually migrate remaining patterns: hook-based to options-factory, utils.invalidate to queryClient.invalidateQueries with queryFilter, provider changes.

software-mansion-labs Bundle

Best practices for integrating and using RNRepo — Software Mansion's infrastructure for pre-built React Native library artifacts that reduces native build times by up to 2×. Use when setting up, configuring, or troubleshooting RNRepo in a React Native or Expo project. Trigger on: 'RNRepo', 'rnrepo', 'slow builds', 'build times', 'prebuilt artifacts', 'prebuilt libraries', '@rnrepo/expo-config-plugin', '@rnrepo/build-tools', 'prebuilds-plugin', 'rnrepo.config.json', 'DISABLE_RNREPO', 'packages.rnrepo.org', 'Maven prebuild', 'CocoaPods prebuild', 'xcframework prebuild', 'prebuild AAR', 'build from source', 'native compilation slow', 'Gradle plugin slow', 'pod install slow', 'CI build times'.

software-mansion-labs Skill

Software Mansion's Fishjam — hosted WebRTC platform for video, audio, and one-to-many livestreaming. MUST USE before writing, reviewing, or debugging ANY code that talks to a Fishjam instance from a backend (Node, Python) or a client (React web, React Native / Expo). Routes to platform fundamentals and the right SDK sub-skill. Trigger on: 'Fishjam', 'fishjam.io', 'fishjam.swmansion.com', 'fishjam dashboard', 'Fishjam ID', 'management token', 'peer token', 'sandbox API', 'livestream room', '@fishjam-cloud/js-server-sdk', 'fishjam-server-sdk', '@fishjam-cloud/react-client', '@fishjam-cloud/react-native-client', '@fishjam-cloud/ts-client', 'FishjamClient', 'FishjamProvider', 'FishjamNotifier', 'FishjamAgent', 'createPeer', 'createRoom', 'createAgent', 'createLivestreamStreamerToken', 'createMoqToken', 'refreshPeerToken', 'webhook', 'gemini fishjam', 'vapi fishjam', 'fishjam expo plugin'.

software-mansion-labs Bundle

Software Mansion's moq-kit — native Swift (iOS) and Kotlin (Android) SDKs for Media over QUIC (moq-lite) live streaming: sub-second-latency playback, camera/microphone/screen publishing, and realtime data tracks over a MoQ relay. MUST USE before writing, reviewing, or debugging ANY code that imports MoQKit (Swift) or com.swmansion.moqkit (Kotlin); for React Native apps use the react-native-moq skill instead. Trigger on: 'moq-kit', 'MoQKit', 'Media over QUIC', 'moq-lite', 'MoQ relay', 'moq-ffi', 'BroadcastSubscription', 'DataTrackEmitter', 'CameraCapture', 'MicrophoneCapture', 'MultiCameraCapture', 'ScreenCapture', 'TrackSubscription', 'AudioDataStream', 'MoQReplayKitBroadcastSampleHandler', or a Session/Player/Publisher/Catalog from moq-kit.

software-mansion-labs Bundle

TypeGPU is type-safe WebGPU in TypeScript. Use whenever the user writes, debugs, or designs TypeGPU code: 'use gpu' shader functions, tgpu.fn, buffers, textures, bind groups, compute and render pipelines, command encoders, render passes, render bundles, vertex layouts, slots, accessors, @typegpu/react hooks (useRoot, useFrame, useUniform), React Native worklet rendering, and any TypeGPU API. Shader logic and CPU-side resources are tightly coupled - handle both sides here even if the user only mentions one (e.g. "how do I write a shader", "how do I create a buffer"). Trigger on any mention of typegpu, tgpu, "use gpu", TypedGPU, or WebGPU code written using TypeGPU's schema API (d.*, tgpu.*, std.*). Do NOT trigger for raw WebGPU (using GPUDevice/GPURenderPipeline directly without tgpu), WGSL-only questions, Three.js, Babylon.js, or WebGL.

software-mansion-labs Skill

Software Mansion's guide for migrating Expo SDK apps to Meta Quest using expo-horizon packages. Use when adding Meta Quest or Meta Horizon OS support to an existing Expo or React Native project. Trigger on: Meta Quest, Horizon OS, Quest 2, Quest 3, Quest 3S, VR app, expo-horizon-core, expo-horizon-location, expo-horizon-notifications, build flavors for Quest, panel sizing, VR headtracking, Horizon App ID, quest build variant, isHorizonDevice, isHorizonBuild, migrate expo-location to Quest, migrate expo-notifications to Quest, Meta Horizon Store publishing, or any task involving running an Expo app on Meta Quest hardware.

software-mansion-labs Bundle

Software Mansion's react-native-moq — Media over QUIC (MoQ) live streaming for React Native: sub-second-latency video/audio playback, camera/mic/screen publishing, and realtime data tracks over a MoQ relay. MUST USE before writing, reviewing, or debugging ANY code that uses react-native-moq or react-native-moq-ui. Trigger on: 'react-native-moq', 'MoQ', 'Media over QUIC', 'moq relay', 'moq-kit', 'useSession', 'useBroadcasts', 'useVideoPlayer', 'useAudioPlayer', 'usePublisher', 'useCamera', 'useMultiCamera', 'useMicrophone', 'useScreenBroadcast', 'useDataTrack', 'useDataMessages', 'useAudioChunks', 'useAudioSource', 'useVideoSource', 'VideoView', 'PublisherView', 'VideoPlayerView', 'BroadcastPickerView', 'createSession', 'createPublisher', 'subscribeBroadcasts'.

software-mansion-labs Bundle

Complete onboarding guide for developers who are new to Detour, the open-source deferred deep linking SDK by Software Mansion. Use this skill whenever a user asks what Detour is, how to get started with Detour, how to set up deep linking with Detour, how to install the Detour SDK, how to configure the Detour dashboard, or how deferred deep linking works. Also use it when the user has no prior deep linking setup and wants to add deep links to their app. Covers everything from zero to production: account setup, dashboard configuration, Universal Links and App Links, platform SDK integration for React Native, iOS, Android, and Flutter, analytics, and architecture.

software-mansion-labs Bundle

Use when the user mentions migrating deep links, switching away from Branch or AppsFlyer, replacing their deep linking SDK, setting up Detour deep linking for the first time, or asks how Branch/AppsFlyer concepts map to Detour. Covers the complete migration end to end - Detour Dashboard configuration, Universal Links and App Links setup, SDK swap with code examples, and analytics migration. Works across Android, iOS, React Native, and Flutter.

software-mansion-labs Bundle

Software Mansion's best practices for production React Native and Expo apps on the New Architecture. MUST USE before writing, reviewing, or debugging ANY code in a React Native or Expo project. If the working directory contains a package.json with react-native, expo, or expo-router as a dependency, this skill applies. Trigger on: any code task in a React Native/Expo project, 'React Native', 'Expo', 'New Architecture', 'Reanimated', 'Gesture Handler', 'react-native-svg', 'ExecuTorch', 'react-native-audio-api', 'react-native-enriched-html', 'Worklet', 'Fabric', 'TurboModule', 'WebGPU', 'react-native-wgpu', 'TypeGPU', 'GPU shader', 'WGSL', 'svg', 'animation', 'gesture', 'audio', 'rich text', 'AI model', 'multithreading', 'chart', 'vector', 'image filter', 'shared value', 'useSharedValue', 'runOnJS', 'scheduleOnRN', 'thread', 'worklet', 'Bundle Mode', or any question involving UI, graphics, native modules, or React Native threading and animation behavior. Also use when a more specific sub-skill matches.

software-mansion-labs Bundle

Browser-only React SDK for Fishjam — joining rooms, capturing camera/microphone/screen, displaying peers, and acting as a livestream streamer or viewer in a React web app. Use whenever the user is writing a React app in a browser that calls Fishjam APIs, sets up FishjamProvider, or uses any Fishjam React hook. Trigger on: '@fishjam-cloud/react-client', 'FishjamProvider', 'useConnection', 'useCamera', 'useMicrophone', 'useScreenShare', 'usePeers', 'useDataChannel', 'useVAD', 'useLivestreamStreamer', 'useLivestreamViewer', 'useCustomSource', 'useInitializeDevices', 'useUpdatePeerMetadata', 'useSandbox', 'PeerWithTracks', 'joinRoom', 'peerToken', 'fishjamId', 'fishjam react', '@fishjam-cloud/ts-client', 'FishjamClient ts-client'. Covers the provider, the full hook catalog, simulcast configuration, custom sources, data channels, VAD, livestream WHEP playback, device persistence, and reconnection. Briefly notes when to drop down to @fishjam-cloud/ts-client for non-React or worker contexts.

software-mansion-labs Bundle

React Native / Expo SDK for Fishjam — video/audio streaming on iOS and Android. Use when writing a React Native or Expo app that calls Fishjam, configures the Fishjam Expo plugin, sets up permissions, runs background streaming, integrates CallKit, or renders RTCView. Trigger on: '@fishjam-cloud/react-native-client', 'fishjam expo plugin', 'FishjamProvider mobile', 'useCameraPermissions', 'useMicrophonePermissions', 'useForegroundService', 'useCallKit', 'useCallKitEvent', 'useCallKitService', 'RTCView', 'RTCPIPView', 'ScreenCapturePickerView', 'startPIP', 'stopPIP', 'AudioDeviceType', 'useAudioOutput', '@fishjam-cloud/react-native-webrtc', 'fishjam react native', 'expo fishjam', 'fishjam ios', 'fishjam android', 'broadcast extension'. Re-exports @fishjam-cloud/react-client hooks plus mobile-only: permissions, foreground service, iOS broadcast extension, audio routing, CallKit, Expo config plugin.

software-mansion-labs Bundle

React Native JSI (JavaScript Interface) — C++ API for interacting with the JS runtime. Use whenever the user asks about or writes C++ code that touches JSI types or patterns: jsi::Runtime, jsi::Value, jsi::Object, jsi::Function, jsi::Array, jsi::ArrayBuffer, jsi::String, jsi::Symbol, jsi::BigInt, jsi::PropNameID, jsi::HostObject, jsi::HostFunction, jsi::NativeState, jsi::WeakObject, jsi::Scope, JSIException, JSINativeException, JSError, HostFunctionType, createFromHostFunction, getHostObject, setNativeState, evaluateJavaScript, queueMicrotask, drainMicrotasks, setRuntimeData, getRuntimeData, ISerialization, rt.global(), jsi.h, jsi-inl.h, JSI binding, C++ native module, calling JS from C++, calling C++ from JS, HostObject destructor, shared_ptr, CallInvoker, invokeAsync, folly::dynamic with JSI, zero-copy ArrayBuffer, TurboModule C++ layer, Nitro Module, jsi::WithRuntimeDecorator, or any question about the boundary between C++ and the JavaScript engine in React Native.

software-mansion-labs Bundle

Software Mansion's best practices for audio in React Native using react-native-audio-api. Covers audio playback (buffer sources, oscillators, streaming), recording (file, callback, graph), audio effects (gain, filters, delay, convolver, panner, waveshaper), real-time analysis and visualization, audio worklets (custom synthesis, UIRuntime/AudioRuntime), system integration (sessions, interruptions, permissions), and testing. Trigger on: react-native-audio-api, AudioContext, AudioRecorder, AudioBuffer, AudioBufferSourceNode, AudioBufferQueueSourceNode, OscillatorNode, StreamerNode, GainNode, BiquadFilterNode, DelayNode, ConvolverNode, StereoPannerNode, WaveShaperNode, AnalyserNode, AudioParam, AudioManager, PlaybackNotificationManager, RecordingNotificationManager, WorkletNode, WorkletSourceNode, WorkletProcessingNode, audio playback, record audio, microphone, waveform, audio visualization, audio streaming, audio worklet, or any React Native feature that captures, processes, or emits sound.

software-mansion-labs Bundle

Software Mansion's best practices for gestures in React Native apps using React Native Gesture Handler. Use when implementing tap, pan, pinch, rotation, swipe, long press, fling, hover, drag, or any touch interaction. Trigger on: 'gesture handler', 'GestureDetector', 'tap gesture', 'pan gesture', 'pinch gesture', 'rotation gesture', 'long press', 'fling', 'hover gesture', 'swipe', 'pinch to zoom', 'drag', 'touch handling', 'Pressable', 'RectButton', 'Swipeable', 'Touchable', 'DrawerLayout', 'VirtualGestureDetector', or any request to handle user touch input in a React Native app.

software-mansion-labs Skill

Software Mansion's best practices for rich text in React Native using react-native-enriched-html (formerly react-native-enriched) and react-native-enriched-markdown. Use when building rich text editors, formatted text inputs, HTML or Markdown renderers, or any feature requiring inline styling, mentions, links, structured text editing, or Markdown display. Trigger on: 'rich text editor', 'rich text input', 'text editor', 'react-native-enriched', 'react-native-enriched-html', 'react-native-enriched-markdown', 'EnrichedTextInput', 'EnrichedText', 'EnrichedMarkdownText', 'formatted text input', 'WYSIWYG', 'mentions input', 'text formatting toolbar', 'context menu items', 'text shortcuts', 'markdown renderer', 'markdown display', 'render markdown', 'display markdown natively', 'render HTML natively', 'LaTeX math', 'GFM tables', or any request to build rich text editing or Markdown rendering in React Native.

software-mansion-labs Bundle

Production animation patterns for React Native using Reanimated 4, Skia, WebGPU, and TypeGPU. Covers CSS transitions, CSS animations, shared value animations, canvas animations with react-native-skia, GPU shader animations, layout animations, scroll-driven animations, interpolation, particle systems, procedural noise, SDF rendering, performance tuning, and accessibility. Trigger on: Reanimated, useSharedValue, useAnimatedStyle, withSpring, withTiming, withDecay, withRepeat, withSequence, CSS transition, CSS animation, layout animation, FadeIn, SlideIn, ZoomIn, LinearTransition, keyframe, interpolate, scrollTo, useFrameCallback, react-native-skia, Skia Canvas, Atlas, usePathInterpolation, usePathValue, useClock, useTexture, SKSL, interpolateColors, Picture API, canvas animation, sprite animation, WebGPU, react-native-wgpu, TypeGPU, GPU shader, WGSL, particle system, Perlin noise, SDF, Three.js, react-three-fiber, animation performance, or any request to animate UI in React Native.

software-mansion-labs Bundle

Build on-device AI features in React Native and Expo apps with React Native ExecuTorch. Use when adding AI to a mobile app without cloud dependencies — chatbots, image classification, object detection, OCR, semantic or instance segmentation, style transfer, image generation, pose estimation, speech-to-text, text-to-speech, voice activity detection, semantic search with embeddings, tokenization, privacy / PII redaction, or vision-language image understanding. Also use when mentioning offline / on-device / privacy AI, reducing cloud cost or latency, or managing ML models. Covers initExecutorch and every hook (useLLM, useClassification, useObjectDetection, useOCR, useSemanticSegmentation, useInstanceSegmentation, useStyleTransfer, useTextToImage, useImageEmbeddings, usePoseEstimation, useSpeechToText, useTextToSpeech, useVAD, useTextEmbeddings, useTokenizer, usePrivacyFilter, useExecutorchModule), tool calling, structured output, VLMs, Expo and bare resource-fetcher adapters, and error handling.

software-mansion-labs Bundle

Software Mansion's best practices for multithreading in React Native apps using react-native-worklets. Use when running JavaScript on multiple threads, offloading heavy computation from the JS thread, communicating between runtimes, or sharing data across threads. Trigger on: 'worklet', 'worklets', 'react-native-worklets', 'runOnUI', 'runOnJS', 'scheduleOnUI', 'scheduleOnRN', 'scheduleOnRuntime', 'createWorkletRuntime', 'background thread', 'UI thread', 'worker runtime', 'Serializable', 'Synchronizable', 'multithreading', 'parallel execution', 'offload computation', 'background processing', 'Bundle Mode', or any request to move work off the JS thread in a React Native app.

software-mansion-labs Bundle

Enable react-native-worklets Bundle Mode (imports inside worklets, third party libraries on worklet runtimes) in an Expo, RN CLI or brownfield React Native app, including the mandatory metro/metro-runtime patches. Use when the user asks to enable Bundle Mode, wants to import npm libraries inside worklets or offload JS code to worklet runtimes, or hits "Failed to get the SHA-1" errors in a worklets Bundle Mode project / missing Fast Refresh for worklet code. Covers enabling only — not disabling; upgrades react-native-worklets to a compatible version when needed, but never installs it from scratch and never touches Reanimated.

bilalmk Bundle

Next.js development tooling via MCP. Inspect routes, components, build info, and debug Next.js apps. Use when working on Next.js applications, debugging routing, or inspecting app structure. NOT for general React or non-Next.js projects.

bilalmk Bundle

Build Next.js 16 applications with correct patterns and distinctive design. Use when creating pages, layouts, dynamic routes, upgrading from Next.js 15, or implementing proxy.ts. Covers breaking changes (async params/searchParams, Turbopack, cacheComponents) and frontend aesthetics. NOT when building non-React or backend-only applications.