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Found 415 Skills
Opinionated SwiftUI architecture enforcement for iOS 17+ apps using Clean MVVM + Coordinator pattern. Enforces Airbnb's @Equatable diffing, @Observable state, NavigationStack coordinators, and Clean Architecture layer boundaries. This skill should be used when writing, reviewing, or refactoring SwiftUI code. Triggers on tasks involving SwiftUI views, ViewModels, navigation, state management, dependency injection, or iOS app architecture.
Create media playback experiences using AVKit. Use when adding video players with AVPlayerViewController, enabling Picture-in-Picture, routing media with AirPlay, using SwiftUI VideoPlayer views, configuring transport controls, displaying subtitles and closed captions, or integrating AVFoundation playback with system UI.
Implement, review, or improve photo picking, camera capture, and media handling in iOS apps using PhotoKit and AVFoundation. Use when working with PhotosPicker, PHPickerViewController, camera capture sessions (AVCaptureSession), photo library access, image loading and display, video recording, or media permissions. Also use when selecting photos from the library, taking pictures, recording video, processing images, or handling photo/camera privacy permissions in Swift apps.
Enterprise skill for iOS production error observability and logging (iOS 15+, Swift 5.5+). Use this skill when writing or reviewing error handling code, adding logging to iOS apps, replacing print() with os.Logger, configuring crash reporting SDKs (Sentry, Crashlytics, PostHog), fixing silent error patterns (try?, Task {} swallowing errors, Combine pipelines dying), adding privacy annotations to logs, integrating MetricKit, implementing retry logic with observability, handling errors in SwiftUI .task {} modifiers, or auditing catch blocks for proper error reporting. Use this skill any time someone writes a catch block, uses try?, creates a Task {}, sets up error handling, or mentions logging, crash reporting, or error tracking in an iOS context — even if they just say 'add error handling' or 'why is this failing silently.'
Apply Swift API Design Guidelines to name, label, and document Swift APIs. Covers argument label rules (prepositional phrase rule, grammatical phrase rule, first-label omission), mutating/nonmutating pair naming (-ed/-ing participle pattern, form- prefix, sort/sorted, formUnion/union), side-effect naming (noun for pure, verb for mutating), documentation comment structure (summary by declaration kind, O(1) complexity rule), clarity at call site, role-based naming, protocol naming (-able/-ible/-ing), default arguments over method families, casing conventions, and terminology. Use when designing new Swift APIs, reviewing naming and argument labels, writing documentation comments, or refactoring for call site clarity.
Select, implement, or migrate between app architecture patterns for Apple platform apps. Use when choosing between MV (Model-View with @Observable), MVVM, MVI, TCA (The Composable Architecture), Clean Architecture, VIPER, or Coordinator patterns; when evaluating architecture fit for a feature's complexity; when migrating from one pattern to another; or when reviewing whether an app's current architecture is appropriate. Scoped to Apple-platform patterns using Swift 6.3, SwiftUI, and UIKit.
Activate this skill when analyzing iOS app UI/UX, evaluating iOS design patterns, proposing iOS interface improvements, or creating iOS implementation specifications. Provides deep expertise in Apple Human Interface Guidelines, SwiftUI patterns, native iOS components, accessibility standards, and iOS-specific interaction paradigms.
Use when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop, accessibility (VoiceOver/Dynamic Type), async operations (.task/.refreshable), or migrating from ObservableObject/@StateObject.
Expert Swift decisions Claude doesn't instinctively make: struct vs class trade-offs, @MainActor placement, async/await vs Combine selection, memory management pitfalls, and iOS-specific anti-patterns. Use when writing Swift code for iOS/tvOS apps, reviewing Swift architecture decisions, or debugging memory/concurrency issues. Trigger keywords: Swift, iOS, tvOS, actor, async, Sendable, retain cycle, memory leak, struct, class, protocol, generic
Expert SwiftGen decisions for iOS/tvOS: when type-safe assets add value, template selection trade-offs, organization strategies, and build phase configuration. Use when setting up SwiftGen, choosing templates, or debugging generation issues. Trigger keywords: SwiftGen, type-safe, Asset, L10n, ImageAsset, ColorAsset, FontFamily, swiftgen.yml, structured-swift5, code generation, asset catalog
Expert localization decisions for iOS/tvOS: when runtime language switching is needed vs system handling, pluralization rule complexity by language, RTL layout strategies, and string key architecture. Use when internationalizing apps, handling RTL languages, or debugging localization issues. Trigger keywords: localization, i18n, l10n, NSLocalizedString, Localizable.strings, stringsdict, plurals, RTL, Arabic, Hebrew, SwiftGen, language switching
Expert lifecycle decisions for iOS/tvOS: when SwiftUI lifecycle vs SceneDelegate, background task strategies, state restoration trade-offs, and launch optimization. Use when managing app state transitions, handling background work, or debugging lifecycle issues. Trigger keywords: lifecycle, scenePhase, SceneDelegate, AppDelegate, background task, state restoration, launch time, didFinishLaunching, applicationWillTerminate, sceneDidBecomeActive