data Skills

Use when fixing VoiceOver issues, Dynamic Type violations, color contrast failures, touch target problems, keyboard navi...

Use when structuring app entry points, managing authentication flows, switching root views, handling scene lifecycle, or...

Use when making app surface in Spotlight search, Siri suggestions, or system experiences - covers the 6-step strategy co...

Use when integrating App Intents for Siri, Apple Intelligence, Shortcuts, Spotlight, or system experiences - covers AppI...

Use when implementing App Shortcuts for instant Siri/Spotlight availability, configuring AppShortcutsProvider, adding su...

Reference for App Store Connect crash analysis, TestFlight feedback, metrics dashboards, and data export workflows

Use when researching Apple frameworks, APIs, or WWDC sessions - provides techniques for retrieving full transcripts, cod...

Use when needing synchronous actor access in tests, legacy delegate callbacks, or performance-critical code. Covers Main...

Use when encountering "Unable to simultaneously satisfy constraints" errors, constraint conflicts, ambiguous layout warn...

Reference — AVFoundation audio APIs, AVAudioSession categories/modes, AVAudioEngine pipelines, bit-perfect DAC output, i...

Use when automating iOS Simulator UI interactions beyond simctl capabilities. Reference for AXe CLI covering accessibili...

Use when implementing BGTaskScheduler, debugging background tasks that never run, understanding why tasks terminate earl...

Symptom-based background task troubleshooting - decision trees for 'task never runs', 'task terminates early', 'works in...

Complete background task API reference - BGTaskScheduler, BGAppRefreshTask, BGProcessingTask, BGContinuedProcessingTask...

Use when encountering dependency conflicts, CocoaPods/SPM resolution failures, "Multiple commands produce" errors, or fr...

Use when build times are slow, investigating build performance, analyzing Build Timeline, identifying type checking bott...

AVCaptureSession, camera preview, photo capture, video recording, RotationCoordinator, session interruptions, deferred p...

camera freezes, preview rotated wrong, capture slow, session interrupted, black preview, front camera mirrored, camera n...

Reference — AVCaptureSession, AVCapturePhotoSettings, AVCapturePhotoOutput, RotationCoordinator, photoQualityPrioritizat...

Use when debugging 'file not syncing', 'CloudKit error', 'sync conflict', 'iCloud upload failed', 'ubiquitous item error...

Use when implementing 'CloudKit sync', 'CKSyncEngine', 'CKRecord', 'CKDatabase', 'SwiftData CloudKit', 'shared database'...

Use when working with Codable protocol, JSON encoding/decoding, CodingKeys customization, enum serialization, date strat...

Use when profiling async/await performance, diagnosing actor contention, or investigating thread pool exhaustion. Covers...

Use when debugging schema migration crashes, concurrency thread-confinement errors, N+1 query performance, SwiftData to...

Use for Core Location troubleshooting - no location updates, background location broken, authorization denied, geofence...

Use for Core Location API reference - CLLocationUpdate, CLMonitor, CLServiceSession, authorization, background location,...

Use when indexing app content for Spotlight search, using NSUserActivity for prediction/handoff, or choosing between CSS...

Use when adding/modifying database columns, encountering "FOREIGN KEY constraint failed", "no such column", "cannot add...

Use when adding debug-only deep links for testing, enabling simulator navigation to specific screens, or integrating wit...

Use when app runs at unexpected frame rate, stuck at 60fps on ProMotion, frame pacing issues, or configuring render loop...

Use when app drains battery, device gets hot, users report energy issues, or auditing power consumption - systematic Pow...

Symptom-based energy troubleshooting - decision trees for 'app at top of battery settings', 'phone gets hot', 'backgroun...

Complete energy optimization API reference - Power Profiler workflows, timer/network/location/background APIs, iOS 26 BG...

Use when implementing widgets, Live Activities, Control Center controls, or app extensions - comprehensive API reference...

Use when asking about 'FileProtectionType', 'file encryption iOS', 'NSFileProtection', 'data protection', 'secure file s...

Use when implementing on-device AI with Apple's Foundation Models framework — prevents context overflow, blocking UI, wr...

Use when debugging Foundation Models issues — context exceeded, guardrail violations, slow generation, availability prob...

Reference — Complete Foundation Models framework guide covering LanguageModelSession, @Generable, @Guide, Tool protocol,...

Use when first installing Axiom, unsure which skill to use, want an overview of available skills, or need help finding t...

Use when writing raw SQL queries with GRDB, complex joins, ValueObservation for reactive queries, DatabaseMigrator patte...

Use when app freezes, UI unresponsive, main thread blocked, watchdog termination, or diagnosing hang reports from Xcode...

Use when implementing haptic feedback, Core Haptics patterns, audio-haptic synchronization, or debugging haptic issues -...

Use when making design decisions, reviewing UI for HIG compliance, choosing colors/backgrounds/typography, or defending...

Reference — Comprehensive Apple Human Interface Guidelines covering colors (semantic, custom, patterns), backgrounds (ma...

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...