data Skills

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

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

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

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

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

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, code samples,...

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

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

Reference — AVFoundation audio APIs, AVAudioSession categories/modes, AVAudioEngine pipelines, bit-perfect DAC output, iOS 26+ spa...

Use when automating iOS Simulator UI interactions beyond simctl capabilities. Reference for AXe CLI covering accessibility-based t...

Use when implementing BGTaskScheduler, debugging background tasks that never run, understanding why tasks terminate early, or test...

Symptom-based background task troubleshooting - decision trees for 'task never runs', 'task terminates early', 'works in dev not p...

Complete background task API reference - BGTaskScheduler, BGAppRefreshTask, BGProcessingTask, BGContinuedProcessingTask (iOS 26),...

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

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

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

camera freezes, preview rotated wrong, capture slow, session interrupted, black preview, front camera mirrored, camera not startin...

Reference — AVCaptureSession, AVCapturePhotoSettings, AVCapturePhotoOutput, RotationCoordinator, photoQualityPrioritization, defer...

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

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

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

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

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

Use for Core Location troubleshooting - no location updates, background location broken, authorization denied, geofence not trigge...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Use when implementing 'iCloud Drive', 'ubiquitous container', 'file sync', 'NSFileCoordinator', 'NSFilePresenter', 'isUbiquitousIt...

Use when implementing in-app purchases, StoreKit 2, subscriptions, or transaction handling - testing-first workflow with .storekit...

Use when fixing or auditing ANY accessibility issue - VoiceOver, Dynamic Type, color contrast, touch targets, WCAG compliance, App...

Use when implementing ANY Apple Intelligence or on-device AI feature. Covers Foundation Models, @Generable, LanguageModelSession,...