Browse 138,453 skills across 70 categories. Mirrored from majiayu000/claude-skill-registry.
Use when implementing 'iCloud Drive', 'ubiquitous container', 'file sync', 'NSFileCoordinator', 'NSFilePresenter', 'isUb...
Use when implementing in-app purchases, StoreKit 2, subscriptions, or transaction handling - testing-first workflow with...
Use when fixing or auditing ANY accessibility issue - VoiceOver, Dynamic Type, color contrast, touch targets, WCAG compl...
Use when implementing ANY Apple Intelligence or on-device AI feature. Covers Foundation Models, @Generable, LanguageMode...
Use when ANY iOS build fails, test crashes, Xcode misbehaves, or environment issue occurs before debugging code. Covers...
Use when writing ANY code with async, actors, threads, or seeing ANY concurrency error. Covers Swift 6 concurrency, @Mai...
Use when working with ANY data persistence, database, axiom-storage, CloudKit, migration, or serialization. Covers Swift...
Use when working with ANY GPU rendering, Metal, OpenGL migration, shaders, frame rate, or display performance. Covers Me...
Use when integrating ANY iOS system feature - Siri, Shortcuts, Apple Intelligence, widgets, IAP, camera, photo library,...
Use when deploying ANY machine learning model on-device, converting models to CoreML, compressing models, or implementin...
Use when implementing or debugging ANY network connection, API call, or socket. Covers URLSession, Network.framework, Ne...
Use when app feels slow, memory grows, battery drains, or diagnosing ANY performance issue. Covers memory leaks, profili...
Use when writing ANY test, debugging flaky tests, making tests faster, or asking about Swift Testing vs XCTest. Covers u...
Use when building, fixing, or improving ANY iOS UI including SwiftUI, UIKit, layout, navigation, animations, design guid...
Use when implementing ANY computer vision feature - image analysis, object detection, pose detection, person segmentatio...
Use when implementing Liquid Glass effects, reviewing UI for Liquid Glass adoption, debugging visual artifacts, optimizi...
Use when planning comprehensive Liquid Glass adoption across an app, auditing existing interfaces for Liquid Glass compa...
Use when localizing apps, using String Catalogs, generating type-safe symbols (Xcode 26+), handling plurals, RTL layouts...
Use when you see memory warnings, 'retain cycle', app crashes from memory pressure, or when asking 'why is my app using...
Use when porting OpenGL/DirectX to Metal - translation layer vs native rewrite decisions, migration planning, anti-patte...
Use when ANY Metal porting issue occurs - black screen, rendering artifacts, shader errors, wrong colors, performance re...
Use when converting shaders or looking up API equivalents - GLSL to MSL, HLSL to MSL, GL/DirectX to Metal mappings, MTKV...
MetricKit API reference for field diagnostics - MXMetricPayload, MXDiagnosticPayload, MXCallStackTree parsing, crash and...
Reference — Comprehensive Network.framework guide covering NetworkConnection (iOS 26+), NWConnection (iOS 12-25), TLV fr...
Use when implementing Network.framework connections, debugging connection failures, migrating from sockets/URLSession st...
Use when debugging connection timeouts, TLS handshake failures, data not arriving, connection drops, performance issues,...
This skill should be used when working with NWConnection patterns for iOS 12-25, supporting apps that can't use async/aw...
Network framework migration guides. Use when migrating from BSD sockets to NWConnection, NWConnection to NetworkConnecti...
Use when Now Playing metadata doesn't appear on Lock Screen/Control Center, remote commands (play/pause/skip) don't resp...
CarPlay Now Playing integration patterns. Use when implementing CarPlay audio controls, CPNowPlayingTemplate customizati...
MusicKit Now Playing integration patterns. Use when playing Apple Music content with ApplicationMusicPlayer and understa...
Use when debugging memory leaks from blocks, blocks assigned to self or properties, network callbacks, or crashes from d...
Use when optimizing large value type performance, working with noncopyable types, or reducing ARC traffic. Covers borrow...
Reference — PHPickerViewController, PHPickerConfiguration, PhotosPicker, PhotosPickerItem, Transferable, PHPhotoLibrary,...
Use when implementing privacy manifests, requesting permissions, App Tracking Transparency UX, or preparing Privacy Nutr...
Use when migrating from Realm to SwiftData - comprehensive migration guide covering pattern equivalents, threading model...
SQLiteData queries, @Table models, Point-Free SQLite, RETURNING clause, FTS5 full-text search, CloudKit sync, CTEs, JSON...
Use when migrating from SwiftData to SQLiteData — decision guide, pattern equivalents, code examples, CloudKit sharing (...
SQLiteData advanced patterns, @Selection column groups, single-table inheritance, recursive CTEs, database views, custom...