Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design.
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),…
Expert guidance on Swift 6.2 Approachable Concurrency for iOS 26+. Use when working with async/await, Tasks, actors, MainActor, Sendable, isolation domains, migrating to Swift 6,…
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…
Implement, review, or improve data visualizations using Swift Charts. Use when building bar, line, area, point, pie, or donut charts; when adding chart selection, scrolling, or…
Implement Swift Codable models for JSON and property-list encoding and decoding with JSONDecoder, JSONEncoder, CodingKeys, and custom init(from:) or encode(to:).
Swift code quality rules for mach-mono — 300-line file limit, @Observable, no singletons in views, no direct Defaults access, protocol-based services.
Reviews Swift code for concurrency safety, error handling, memory management, and common mistakes. Use when reviewing .swift files for async/await patterns, actor isolation,…
Expert guidance on Swift Concurrency best practices, patterns, and implementation. Use when developers mention: (1) Swift Concurrency, async/await, actors, or tasks, (2) modern…
中文优先：用于Swift并发62相关任务，帮助识别、设计、实现或验证对应工作流。English keywords: Swift 6.2 Approachable Concurrency — single-threaded by default, @concurrent for explicit background offloading, isolated…
Review and fix Swift concurrency issues such as actor isolation and Sendable violations.
Reviews Swift code for concurrency correctness, modern API usage, and common async/await pitfalls. Use when reading, writing, or reviewing Swift concurrency code.
Use when reviewing Swift 5.5+ code containing `await`, `actor`, `Task { }`, `@MainActor`, `@unchecked Sendable`, cancellable timer/deadline handles, or long-lived `for await`…
Swift 6 fundamentals for all Apple platforms. Use when implementing concurrency, architecture, testing, i18n, or performance optimization across iOS, macOS, iPadOS, watchOS,…
SwiftData persistence framework with models, queries, relationships, and CloudKit sync
Domain knowledge about SwiftData and CloudKit; use when planning or implementing features, updates, or bug fixes that involve SwiftData or CloudKit.
Swift/iOS/macOS development automation toolkit. Router for sub-skills: build, fastlane, project, profile, xcodegen, docc.
Comprehensive Swift development for building, testing, and deploying iOS/macOS applications. Use when Claude needs to: (1) Build Swift packages or Xcode projects from command…
Rapid task execution without hesitation or deterrence. Expert in overcoming blockers, making quick decisions, and maintaining forward momentum.
Builds iOS/macOS/watchOS/tvOS applications, implements SwiftUI views and state management, designs protocol-oriented architectures, handles async/await concurrency, imple — from…
Expert in the Swift ecosystem, specializing in iOS/macOS/visionOS development, Swift 6 concurrency, and deep system integration.
Format values for display using the FormatStyle protocol and its concrete types. Use when formatting numbers (integers, floating-point, decimals), currencies, percentages, dates,…
Comprehensive guide to UI/UX design principles, architectural patterns, and animation techniques for building high-quality iOS apps with Swift.
Apply modern Swift language patterns and idioms for non-concurrency, non-SwiftUI code. Covers if/switch expressions (Swift 5.9+), typed throws (Swift 6+), result builders,…
Expert guidance on Swift library and framework design. Use when developers mention: (1) designing a Swift library or framework, (2) public API design patterns, (3)…
Real-time Swift code intelligence via SourceKit-LSP. Gives Claude instant error detection, go-to-definition, find-references, and type info for .swift files.
Comprehensive macOS app development with Swift 6.2, SwiftUI, SwiftData, Swift Concurrency, Foundation Models, Swift Testing, ScreenCaptureKit, and app distribution.
Core navigation primitives for Swift: AlertState, ConfirmationDialogState, UIBinding, and observation tools
Expert guidance on SwiftNIO best practices, patterns, and implementation. Use when developers mention: (1) SwiftNIO, NIO, ByteBuffer, Channel, ChannelPipeline, ChannelHandler,…
Build, integrate, test, and diagnose Swift OpenAPI Generator clients in Apple-platform apps and Swift packages using OpenAPIURLSession, OpenAPIRuntime, URLSessionTransport,…
Guide build, run, manifest, dependency, plugin, resource, Metal-packaging, and Release-versus-Debug work in existing Swift Package Manager repositories.
Guide Swift Testing, XCTest holdouts, xctestplan handoff conditions, async test design, semantic accessibility-test boundaries, test-fixture organization, and package…
Compatibility workflow surface for broad or legacy Swift Package Manager execution requests. Use when older references still point at swift-package-workflow and route the request…
Review, refactor, or build SwiftUI features with correct state management, modern API usage, optimal view composition, navigation patterns, performance optimization, and testing…
Advanced Swift patterns — property wrappers, result builders, Combine basics, opaque & existential types, macro system, advanced generics, and performance optimization.
Swift-specific idioms, tooling, and philosophy. Use when working with Swift code. Emphasizes protocol-oriented programming, value semantics, strict concurrency (Swift 6+), and…
中文优先：用于Swift协议依赖注入测试相关任务，帮助识别、设计、实现或验证对应工作流。English keywords: Protocol-based dependency injection for testable Swift code — mock file system, network, and external APIs using…
Adaptive Swift/iOS quiz with two modes. Classic is lighter, Mastery requires mechanism-level reasoning. — from engineering/engineering-misc
Adaptive Swift/iOS quiz with two modes. Classic is lighter, Mastery requires mechanism-level reasoning. — from engineering/engineering-misc
Review Swift/iOS code: SwiftUI, Combine, UIKit, App Store guidelines and iOS architecture
Swift coding rules from ai-toolkit: coding-style, frameworks, patterns, security, testing. Triggers: .swift, Package.swift, .xcodeproj, SwiftUI, Combine, async/await, XCTest.
Swift/SwiftUI strictness, clean code, and security rules. Use when writing, reviewing, or refactoring Swift code in iOS/macOS projects.
Interactive Swift/iOS tutor with two modes. Classic explains first, Mastery uses a predict-first Core Loop with gates.
Writes and migrates tests using the Swift Testing framework with @Test, @Suite, #expect, #require, confirmation, parameterized tests, test tags, traits, withKnownIssue, XCTest UI…
Reviews Swift Testing code for proper use of #expect/#require, parameterized tests, async testing, and organization.
Expert guidance for Swift Testing: test structure, #expect/#require macros, traits and tags, parameterized tests, test plans, parallel execution, async waiting patterns, and…
Writes, reviews, and improves Swift Testing code using modern APIs and best practices. Use when reading, writing, or reviewing projects that use Swift Testing.
Update all Swift dependencies to their latest versions. Use when the user asks to upgrade, update, or bump Swift package dependencies.
Expert guidance on using Valkey and Redis with Swift. Use when developers mention: (1) Valkey or Redis in Swift, (2) valkey-swift library, (3) RESP protocol or RESP3, (4) Redis…
Reviews SwiftData code for model design, queries, concurrency, and migrations. Use when reviewing .swift files with import SwiftData, @Model, @Query, @ModelActor, or…
Guide SwiftUI app-structure decisions for Apple apps across `App`, scenes, commands, focus, environment, preferences, window and document coordination, and reusable view…
WHEN building SwiftUI views, managing state, setting up shared services, or making architectural decisions; NOT for UIKit or legacy patterns; provides pure SwiftUI data flow…
Reviews SwiftUI code for view composition, state management, performance, and accessibility. Use when reviewing .swift files containing SwiftUI views, property wrappers (@State,…
SwiftUI data flow expert with @Observable, SwiftData, NavigationStack, and structured concurrency. Activate on: SwiftUI state management, @Observable, SwiftData, NavigationStack,…
Diagnose SwiftUI performance issues including unnecessary re-renders, view identity problems, and slow body evaluations.
Use for SwiftUI development work: review and refactor SwiftUI view structure, Observation usage, MV patterns, dependency boundaries, and ViewModel choices; audit SwiftUI…
Expert SwiftUI development guidelines with MVVM architecture and modern Swift best practices
Write, review, or improve SwiftUI code following best practices for state management, view composition, performance, and iOS 26+ Liquid Glass adoption.
Write, review, or improve SwiftUI code following best practices for state management, view composition, performance, modern APIs, Swift concurrency, and iOS 26+ Liquid Gl — from…
SwiftUI architecture patterns, state management with @Observable, view composition, navigation, performance optimization, and modern iOS/macOS UI best practices.