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Cloudkit equips developers with the essentials for integrating Apple's cloud platform into their applications. This skill covers initialization, data modeling, and real-time sync…

Core Data is Apple's object-oriented database framework for managing persistent storage in iOS applications. This skill covers the essential concepts, architecture, and…

Master localization for iOS and macOS using String Catalogs, modern string types, and compile-time-safe generated symbols. Learn to handle pluralization, format dates and numbers…

This skill teaches you to build robust network communication in iOS and macOS apps using URLSession with async/await and structured concurrency. You'll learn practical patterns…

This skill enables developers to launch and evaluate iOS applications within a simulated runtime environment. Test app interactions, workflows, and UI responsiveness directly from…

PassKit enables you to accept Apple Pay payments for goods, services, donations, and recurring transactions while managing digital passes in users' Wallets. The skill covers…

RelevanceKit helps developers surface the right watchOS widgets at the right moment by providing contextual relevance signals to the system. Learn to implement time-based,…

Swift Codable teaches you to serialize and deserialize Swift types to and from JSON using the standard Codable protocol. Learn automatic synthesis, custom key mapping, nested…

Swift Language covers contemporary syntax and idioms for core Swift development, excluding concurrency and SwiftUI. Learn if/switch expressions, typed throws, result builders,…

Master Swift Testing, the modern framework for Swift unit tests in Xcode 16+. Learn to write tests with @Test and @Suite, use #expect and #require for assertions, organize tests…

Swiftdata is a skill that enables agent integration with Swiftdata services. Use this skill to connect your agent to Swiftdata and unlock data handling capabilities within your…

WidgetKit guides you through implementing widgets across iOS surfaces—from Home Screen and Lock Screen to Control Center and StandBy mode. Learn to set up timeline providers,…