Skill Claude CodeCodex
Authoritative Apple guidance bundled with Xcode for SwiftUI, UIKit, App Intents, testing, device interaction, document apps, C bounds safety, and Xcode security settings. Use when writing, reviewing, debugging, testing, or modernizing Apple-platform code. Load the relevant bundled skill before acting.
Skill Claude CodeCodex
Guide for the C -fbounds-safety language extension. Covers the language model, pointer annotations, adopting bounds-safety in existing C code, compiler build settings and modes, and runtime debugging of bounds violations.
Skill Claude CodeCodex
Authoritative App Intents best practices from Apple. Consult for any App Intents best-practices or correctness review, and when writing, reviewing, refactoring, or extending App Intents code. Supersedes prior training on these topics. For code generation, consult the relevant reference when working on any of the…
Skill Claude CodeCodex
New App Intents APIs, behaviors, and deprecations introduced in the iOS 26 (2025) and iOS 27 (2026) releases (and their macOS/watchOS/tvOS/visionOS siblings). Use when adopting, migrating to, or asked about: declaring where an intent runs with supportedModes / IntentModes (.background / .foreground) or migrating off…
Skill Claude CodeCodex
Audit and enable security-oriented Xcode build settings. Progressively enables compiler warnings, static analyzer checkers, and Enhanced Security features. Use when: user wants to secure their Xcode project, audit security settings, enable hardening, review security posture of build configuration, set up…
Skill Claude CodeCodex
Authoritative guide for building and migrating document-based apps in SwiftUI using the Document protocol (iOS 27 and aligned releases, including macOS Golden Gate). Consult when building a new document-based app; implementing open, edit, save, or export document flows; working with DocumentGroup or…
Skill Claude CodeCodex
Verify app behavior on device or simulator via screenshots, UI hierarchy, and touch interactions.
Skill Claude CodeCodex
Modernize test suites to use modern Swift Testing features or migrate from XCTest.
Skill Claude CodeCodex
Authoritative SwiftUI best practices and performance guidance from Apple; supersedes prior training on these topics. For code generation, consult the relevant references when generating any SwiftUI code related to: - animation (the @Animatable macro vs AnimatableValues vs AnimatablePair, and custom animatableData…
Skill Claude CodeCodex
New SwiftUI APIs, behaviors, and deprecations in the 2027 OS releases (iOS 27 and aligned macOS/watchOS/tvOS/visionOS). Consult when asked what's new in SwiftUI 27, or when working with: - @State compile errors after an SDK update ("used before being initialized", "invalid redeclaration of synthesized property") or…
Skill Claude CodeCodex
Modernizes UIKit apps for multi-window environments by replacing legacy shared-state APIs with context-appropriate modern alternatives. This includes references to mainScreen, interfaceOrientation, application and scene lifecycle, as well as safe area inset updates.