Agent skills for Codex CLI

Use when debugging NavigationStack issues (not responding, unexpected pops, crashes), build failures (SPM resolution, "No such module"…

Use when a Swift feature contains policy, evaluation, parsing, validation, state transitions, or deterministic business logic that can be…

Swift 6.1–6.3 knowledge: default MainActor isolation, @concurrent, InlineArray, Span, @c interop, module selectors, Swift Testing updates.

Apply modern Swift language patterns and idioms for non-concurrency, non-SwiftUI code.

When to activate: Swift localization, String Catalogs, NSLocalizedString, pluralization, date/number formatting, multi-language apps

Use when implementing Network.framework connections (NWConnection, NetworkConnection), debugging connection failures, migrating from…

Use when swift's optional handling patterns including optional binding, chaining, nil coalescing, and modern approaches to safely working…

Use when encountering unfamiliar import statements, exploring dependency APIs, or when user asks "what's import X" or "what does X do".

Configure Swift Package Manager with platform-specific dependencies and build settings

Swift-specific idioms, tooling, and philosophy.

Audit a Swift / iOS / macOS repo for Xcode Cloud and TestFlight release blockers before upload - pbxproj drift, static build numbers…

Expert in Swift and SwiftUI development for iOS, macOS, and Apple platforms

- Building iOS, iPadOS, or macOS apps with SwiftUI - Implementing async/await networking with URLSession - Setting up Core Data for local…

Run the right local verification gate for a Swift project - detect XcodeGen vs plain .xcodeproj vs SwiftPM vs Tuist, then regenerate (if…

Check Swift on Wasm compatibility, identify incompatible frameworks, port and refactor code for WebAssembly

SwiftlyS2 toolkit for creating, modifying, auditing, planning, reviewing, and directly editing C#/.NET SwiftlyS2 plugins.

SwiftMesh uses a builder pattern on the Mesh class.

This skill provides comprehensive guidance for implementing advanced SwiftUI animations, transitions, matched geometry effects, and Metal…

Implement or review SwiftUI Liquid Glass APIs with correct fallbacks and modifier order.

SwiftUI architecture patterns, state management with @Observable, view composition, navigation, performance optimization, and modern…

Use when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop…