capacitor-best-practices

cap-go/capgo-skills

Review and set up Capacitor apps against current best practices (Capacitor 8.5 stable, 9 alpha via @next). Use for a Capacitor codebase review, capacitor.config.ts audit, new project setup, aligning @capacitor/core/cli/ios/android and plugin majors, plugin patterns (availability checks, checkPermissions/requestPermissions, error code handling, web fallbacks), or release prep; or on " " plugin is not implemented on ios, Could not find the web assets directory, platform has not been added yet, a dev server.url shipped to production, lost edits in android/app/src/main/assets/public, SPM vs CocoaPods, or AppDelegate/UIScene drift. Do not use for security audits (capacitor-security), performance (capacitor-performance), tests (capacitor-testing), crashes (debugging-capacitor), major upgrades (capacitor-app-upgrades), SPM migration (cocoapods-to-spm), UIScene adoption (capacitor-uiscene-migration), or live updates (capgo-live-updates).

capacitor-plugins

cap-go/capgo-skills

Pick, install, and wire up Capacitor plugins for native features (camera, filesystem, geolocation, biometrics, in-app purchases, social login, SQLite, calendar, contacts, health, BLE, NFC, etc.). Covers official @capacitor/ packages (Capacitor 8.5 stable, 9 alpha on next) plus the 145-package @capgo/ index, native permission keys (Info.plist, AndroidManifest, variables.gradle minSdk), npx cap sync / cap ls verification, and errors like '"Camera" plugin is not implemented on ios', 'unable to find plugin', UNIMPLEMENTED, and OS-PLUG- codes. Use for "which plugin should I use for X", adding a plugin, or a plugin call failing after install. Do not use for push setup (capacitor-push-notifications), splash assets (capacitor-splash-screen), keyboard layout (capacitor-keyboard), deep links (capacitor-deep-linking), OTA updates (capgo-live-updates), upgrading plugin source code (capacitor-plugin-upgrades), or adding SPM to a plugin (capacitor-plugin-spm-support).

debugging-capacitor

cap-go/capgo-skills

Diagnoses and fixes runtime bugs in Capacitor iOS/Android apps - white/blank screen on launch, startup crashes, "X" plugin is not implemented on ios/android, net::ERRCLEARTEXTNOTPERMITTED, App Transport Security blocks, CORS on capacitor://localhost, permission denials, live reload not connecting, and Capacitor 8.5+ UIScene regressions (appUrlOpen, universal links, pause/resume silent because AppDelegate callbacks stopped). Covers Safari Web Inspector, chrome://inspect, Xcode/LLDB, Android Studio, npx cap run --url (Capacitor 9) vs -l --host (8), xcrun simctl openurlprivacypush, xcrun devicectl device process launchopenURL, xctrace. Do not use for only reading device logs (ios-android-logs), the UIScene migration itself (capacitor-uiscene-migration), deep-link setup (capacitor-deep-linking), speed (capacitor-performance), crash SDKs (capacitor-native-observability), tests (capacitor-testing), or upgrades/build errors (capacitor-app-upgrades, cocoapods-to-spm).

capacitor-testing

cap-go/capgo-skills

Testing guide for Capacitor apps and plugins. Covers web-layer unit and component tests with Vitest and mocked Capacitor plugins (vi.mock('@capacitor/core'), registerPlugin), Playwright for the web build, Appium E2E with NATIVEAPP / WEBVIEW context switching, native plugin unit tests with Swift Testing vs XCTest (what can migrate, CAPPluginCall patterns, xcodebuild test on a simulator) and Android JUnit, plus an agent-driven verification loop on simulators and devices (build, install, launch, screenshot, UI hierarchy, tap, logs) with xcrun simctl, xcrun devicectl, adb, Xcode MCP device tools, and live reload via npx cap run --url (Capacitor 9) or -l --host --port (Capacitor 8). Use when adding tests, mocking plugins, "does it work on device", verifying a UI change on a simulator, migrating XCTest to Swift Testing, or setting up test CI. Do not use for crash log capture (ios-android-logs), WebView debugging sessions (debugging-capacitor), or build pipelines (capacitor

safe-area-handling

cap-go/capgo-skills

Fixes notch, Dynamic Island, home indicator, display cutout, and system bar overlap in Capacitor apps. Covers viewport-fit=cover + env(safe-area-inset-), the Capacitor 8 SystemBars core plugin (insetsHandling, injected --safe-area-inset- CSS variables for Android WebView < 140, removal of android.adjustMarginsForEdgeToEdge), Android 15/16 enforced edge-to-edge (overlaysWebView and backgroundColor of @capacitor/status-bar no longer work at targetSdk 36), iOS contentInset, and insets that change at runtime on rotation, iPad/foldable resizable windows. Use when headers sit under the status bar, tab bars hide behind the gesture bar, env() returns 0 on Android, or layout broke after upgrading to Capacitor 8 / targetSdk 35+. Do not use for keyboard overlap (capacitor-keyboard), Ionic/Konsta component theming (ionic-design, konsta-ui), Tailwind utility setup (tailwind-capacitor), or iOS multi-window/resizability adoption (capacitor-ios-resizability).

capacitor-deep-linking

cap-go/capgo-skills

Implements and debugs deep links in Capacitor apps - custom URL schemes, iOS Universal Links (apple-app-site-association, Associated Domains entitlement), Android App Links (assetlinks.json, autoVerify), and routing via @capacitor/app appUrlOpen + App.getLaunchUrl(). Covers the Capacitor 8.5+ UIScene change where AppDelegate application(:open:options:) and continue userActivity stop being called and custom handling must move to SceneDelegate, plus cold vs warm launch testing. Use when links open Safari/Chrome instead of the app, appUrlOpen never fires, the launch URL is lost on cold start, or OAuth redirects do not return to the app. Do not use for the full UIScene migration (capacitor-uiscene-migration), push notification taps (capacitor-push-notifications), or social login plugin setup (capacitor-plugins).

setup-matt-pocock-skills

mattpocock/skills

Configure this repo for the engineering skills: set up its issue tracker, triage label vocabulary, and domain doc layout. Run once before first use of the other engineering skills.

frontend-design

anthropics/skills

Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defaults.

hyperframes-animation

heygen-com/hyperframes

All animation knowledge for HyperFrames — atomic motion rules, multi-phase scene blueprints, scene transitions, broader motion-design techniques, AND the seven runtime adapters (GSAP default, plus Lottie, Three.js, Anime.js, CSS keyframes, Web Animations API, TypeGPU). Use for any motion or animation task: pick 2-4 rules and compose, or load a blueprint, or look up runtime-specific API (e.g. GSAP eases / Lottie player / Three.js mixer). Also covers auditing an existing composition's choreography (animation map) and 24 named text-animation effects. HyperFrames-native: single paused timeline, seek-safe, deterministic.

prototype

mattpocock/skills

Build a throwaway prototype to answer a design question. Use when the user wants to sanity-check whether a state model or logic feels right, or explore what a UI should look like.

hyperframes-core

heygen-com/hyperframes

The HyperFrames composition contract — build one renderable project. Use for composition structure, the data- timing attributes, class="clip", tracks, sub-compositions, variables, framework-owned media playback, deterministic-render rules, and validation. Read before writing composition HTML.

vercel-react-best-practices

vercel-labs/agent-skills

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.