iOS System Integration Router
You MUST use this skill for ANY iOS system integration including Siri, Shortcuts, widgets, in-app purchases, camera, photo library, audio, axiom-haptics, and more.
When to Use
Use this router for:
- Siri & Shortcuts (App Intents)
- Apple Intelligence integration
- Widgets & Live Activities
- In-app purchases (StoreKit)
- Camera capture (AVCaptureSession)
- Photo library & pickers (PHPicker, PhotosPicker)
- Audio, haptics, & audio recognition (ShazamKit)
- Localization
- Privacy & permissions
- Spotlight search
- App discoverability
- Alarms (AlarmKit)
- Background processing (BGTaskScheduler)
- Location services (Core Location)
- Maps & MapKit (Map, MKMapView, annotations, search, directions)
- Passkeys & authentication (ASAuthorizationController, WebAuthn)
- App integrity & fraud prevention (App Attest, DeviceCheck)
- Calendar events & reminders (EventKit, EventKitUI)
- Contacts & contact pickers (Contacts, ContactsUI, ContactProvider)
Cross-Domain Routing
When integration issues overlap with other domains:
Widget + data sync issues (widget not showing updated data):
- Widget timeline not refreshing → stay in ios-integration (extensions-widgets)
- SwiftData/Core Data not shared with extension → also invoke ios-data — App Groups and shared containers are data-layer concerns
- Background refresh timing → also invoke ios-concurrency if async patterns are involved
Live Activity + push notification issues:
- ActivityKit push token setup, Live Activity not updating → stay in ios-integration (extensions-widgets)
- Push notification delivery failures, APNs errors → also invoke ios-networking (networking-diag)
- Entitlements/certificates misconfigured → also invoke ios-build (xcode-debugging)
Camera + permissions + privacy:
- Camera code issues → stay in ios-integration (camera-capture)
- Privacy manifest or Info.plist issues → stay in ios-integration (privacy-ux)
- Build/entitlement errors → also invoke ios-build
MapKit + location issues (user location not showing on map):
- Map display, annotations, search → stay in ios-integration (mapkit)
- Location authorization, monitoring, background location → also invoke ios-performance or ios-integration (core-location)
- Map performance with many annotations → also invoke ios-performance if profiling needed
Push notification + Live Activity issues (push not updating Live Activity):
- Push transport, APNs headers, token management → stay in ios-integration (push-notifications, push-notifications-diag)
- ActivityKit UI, attributes, Dynamic Island → also invoke ios-integration (extensions-widgets)
- Background execution timing → also invoke ios-concurrency if async patterns are involved
Push notification + background processing (silent push not triggering background work):
- Push payload and delivery → stay in ios-integration (push-notifications-diag)
- Background execution, BGTaskScheduler → also invoke ios-integration (background-processing)
Calendar + data sync issues (events not syncing, stale calendar data):
- EventKit store changes, EKEventStoreChanged → stay in ios-integration (eventkit)
- Shared data with widget via App Groups → also invoke ios-data for shared container patterns
- Background refresh for calendar sync → also invoke ios-integration (background-processing)
Contacts + privacy issues (contact access denied, limited access confusion):
- Contact permission model, Contact Access Button → stay in ios-integration (contacts)
- Privacy manifest or Info.plist for contacts → stay in ios-integration (privacy-ux)
- Contact Provider extension architecture → also invoke ios-build if extension target issues
ShazamKit + microphone permissions (no match results, permission denied):
- Microphone NSMicrophoneUsageDescription / Info.plist → stay in ios-integration (privacy-ux)
- ShazamKit App Service not enabled → stay in ios-integration (shazamkit)
ShazamKit + AVFoundation (custom SHSession with AVAudioEngine buffers):
- Audio engine setup, buffer formats, session configuration → stay in ios-integration (shazamkit)
- AVAudioEngine pipeline, audio session category, format conversion → also invoke avfoundation-ref
ShazamKit + MusicKit (play matched song via Apple Music):
- Match result with appleMusicID/appleMusicURL → stay in ios-integration (shazamkit)
- MusicKit playback, ApplicationMusicPlayer → also invoke ios-integration (now-playing-musickit)
Routing Logic
Apple Intelligence & Siri
App Intents → /skill axiom-app-intents-ref App Shortcuts → /skill axiom-app-shortcuts-ref App discoverability → /skill axiom-app-discoverability Core Spotlight → /skill axiom-core-spotlight-ref
Widgets & Extensions
Widgets/Live Activities → /skill axiom-extensions-widgets Widget reference → /skill axiom-extensions-widgets-ref
In-App Purchases
IAP implementation → /skill axiom-in-app-purchases StoreKit 2 reference → /skill axiom-storekit-ref IAP audit → Launch iap-auditor agent (missing transaction.finish(), weak receipt validation, missing restore, subscription tracking) IAP full implementation → Launch iap-implementation agent (StoreKit config, StoreManager, transaction handling, restore purchases)
Camera & Photos
Camera capture implementation → /skill axiom-camera-capture Camera API reference → /skill axiom-camera-capture-ref Camera debugging → /skill axiom-camera-capture-diag Camera audit → Launch camera-auditor agent or /axiom:audit camera (deprecated APIs, missing interruption handlers, threading violations, permission anti-patterns) Photo pickers & library → /skill axiom-photo-library Photo library API reference → /skill axiom-photo-library-ref
Audio, Haptics & Audio Recognition
Audio (AVFoundation) → /skill axiom-avfoundation-ref Haptics → /skill axiom-haptics Now Playing → /skill axiom-now-playing CarPlay Now Playing → /skill axiom-now-playing-carplay MusicKit integration → /skill axiom-now-playing-musickit
ShazamKit implementation → /skill axiom-shazamkit
- Song recognition (Shazam catalog), custom audio matching
- SHManagedSession (modern) vs SHSession (legacy) decision
- Custom catalogs, signature generation, Shazam CLI
- Library management (SHLibrary)
ShazamKit API reference → /skill axiom-shazamkit-ref
- SHManagedSession, SHSession, SHCustomCatalog, SHSignatureGenerator
- SHMediaItem, SHMatchedMediaItem, SHLibrary, SHError
- Complete property keys and error codes
Localization & Privacy
Localization → /skill axiom-localization Privacy UX → /skill axiom-privacy-ux
Authentication & Credentials
Passkeys / WebAuthn sign-in → /skill axiom-passkeys
App Integrity & Fraud Prevention
App Attest / DeviceCheck → /skill axiom-app-attest
Alarms
AlarmKit (iOS 26+) → /skill axiom-alarmkit-ref
- Alarm scheduling and authorization
- Live Activity integration
- SwiftUI alarm management views
Calendar & Reminders (EventKit)
EventKit implementation → /skill axiom-eventkit
- Permission model (no access, write-only, full access)
- Event creation patterns (EventKitUI vs direct EventKit)
- Reminder patterns (DateComponents, EKSource selection)
- Store lifecycle (singleton, change notifications)
- Migration from pre-iOS 17 APIs
EventKit API reference → /skill axiom-eventkit-ref
- EKEventStore, EKEvent, EKReminder, EKAlarm, EKRecurrenceRule
- EventKitUI view controllers
- Siri Event Suggestions (INReservation donation)
- Virtual conference extensions
- Location-based reminders
Contacts
Contacts implementation → /skill axiom-contacts
- Permission model (limited vs full access)
- Contact Access Button (iOS 18+)
- Picker vs store access decisions
- CNContactStore patterns
- Contact Provider extensions
Contacts API reference → /skill axiom-contacts-ref
- CNContactStore, CNMutableContact, CNSaveRequest
- CNContactFormatter, CNContactVCardSerialization
- CNContactPickerViewController, ContactAccessButton
- ContactProvider framework
- Change history (CNChangeHistoryFetchRequest)
Background Processing
BGTaskScheduler implementation → /skill axiom-background-processing Background task debugging → /skill axiom-background-processing-diag Background task API reference → /skill axiom-background-processing-ref
Push Notifications
Push notification implementation → /skill axiom-push-notifications Push notification API reference → /skill axiom-push-notifications-ref Push notification debugging → /skill axiom-push-notifications-diag
Location Services
Implementation patterns → /skill axiom-core-location API reference → /skill axiom-core-location-ref Debugging location issues → /skill axiom-core-location-diag
Maps & MapKit
MapKit implementation patterns → /skill axiom-mapkit
- SwiftUI Map vs MKMapView decision
- Annotation strategies by count
- Search and directions
- 8 anti-patterns
MapKit API reference → /skill axiom-mapkit-ref
- SwiftUI Map API
- MKMapView delegates
- MKLocalSearch, MKDirections, Look Around
- Platform availability matrix
MapKit troubleshooting → /skill axiom-mapkit-diag
- Annotations not appearing
- Region jumping / infinite loops
- Clustering issues
- Search failures
Decision Tree
- App Intents / Siri / Apple Intelligence? → app-intents-ref
- App Shortcuts? → app-shortcuts-ref
- App discoverability / Spotlight? → app-discoverability, core-spotlight-ref
- Widgets / Live Activities? → extensions-widgets, extensions-widgets-ref
- In-app purchases / StoreKit? → in-app-purchases, storekit-ref
- Want IAP audit (missing finish, receipt validation)? → iap-auditor (Agent)
- Want full IAP implementation? → iap-implementation (Agent)
- Camera capture? → camera-capture (patterns), camera-capture-diag (debugging), camera-capture-ref (API)
- Want camera code audit? → camera-auditor (Agent)
- Photo pickers / library? → photo-library (patterns), photo-library-ref (API)
- Audio / AVFoundation? → avfoundation-ref
- Now Playing? → now-playing, now-playing-carplay, now-playing-musickit
- Haptics? → haptics
- Audio recognition / ShazamKit / song identification? → shazamkit (patterns), shazamkit-ref (API)
- Custom audio catalogs / second-screen sync / audio matching? → shazamkit (patterns), shazamkit-ref (API)
- Localization? → localization
- Privacy / permissions? → privacy-ux
- Background processing? → background-processing (patterns), background-processing-diag (debugging), background-processing-ref (API)
- Push notification implementation, APNs, or remote notification handling? → push-notifications (patterns), push-notifications-ref (API), push-notifications-diag (debugging)
- Need APNs payload format, headers, or JWT auth details? → push-notifications-ref
- Push notifications not arriving, token issues, or delivery failures? → push-notifications-diag
- Location services? → core-location (patterns), core-location-diag (debugging), core-location-ref (API)
- Maps / MapKit / annotations / directions? → mapkit (patterns), mapkit-ref (API), mapkit-diag (debugging)
- Alarms / AlarmKit? → alarmkit-ref
- Passkeys / WebAuthn / replacing passwords / ASAuthorizationController? → passkeys
- App Attest / DeviceCheck / fraud prevention / app integrity? → app-attest
- Calendar events / EventKit / EventKitUI / add to calendar? → eventkit (patterns), eventkit-ref (API)
- Reminders / EKReminder / reminder lists? → eventkit (patterns), eventkit-ref (API)
- Siri Event Suggestions / INReservation? → eventkit-ref (API, Part 9)
- Virtual conference extension / EKVirtualConferenceProvider? → eventkit-ref (API, Part 8)
- Contacts / contact picker / CNContactStore? → contacts (patterns), contacts-ref (API)
- Contact Access Button / limited access / iOS 18 contacts? → contacts (patterns), contacts-ref (API)
- Contact Provider extension / expose contacts to system? → contacts-ref (API, Part 10)
Anti-Rationalization
| Thought | Reality |
|---|---|
| "App Intents are just a protocol conformance" | App Intents have parameter validation, entity queries, and background execution. app-intents-ref covers all. |
| "Widgets are simple, I've done them before" | Widgets have timeline, interactivity, and Live Activity patterns that evolve yearly. extensions-widgets is current. |
| "I'll add haptics with a simple API call" | Haptic design has patterns for each interaction type. haptics skill matches HIG guidelines. |
| "Localization is just String Catalogs" | Xcode 26 has type-safe localization, generated symbols, and #bundle macro. localization skill is current. |
| "Camera capture is just AVCaptureSession setup" | Camera has interruption handlers, rotation, and threading requirements. camera-capture covers all. |
| "I'll just use MKMapView, I know it already" | SwiftUI Map is 10x less code for standard map features. mapkit has the decision tree. |
| "MapKit search doesn't work, I'll use Google Maps SDK" | MapKit search needs region bias and resultTypes configuration. mapkit-diag fixes this in 5 minutes. |
| "Alarm scheduling is just UNNotificationRequest" | AlarmKit (iOS 26+) has dedicated alarm UI, authorization, and Live Activity integration. alarmkit-ref covers the framework. |
| "Push notifications are just a payload and a token" | Token lifecycle, Focus interruption levels, service extension gotchas, and sandbox/production mismatch cause 80% of push bugs. push-notifications covers all. |
| "Our users aren't ready for passkeys" | Apple, Google, and Microsoft ship passkeys across all platforms. Users don't need to understand crypto — they just tap. passkeys covers the migration path. |
| "App Attest is overkill for our app" | Any app with server-side value (premium content, virtual currency, user accounts) is a fraud target. app-attest has a gradual rollout strategy. |
| "Just request full Calendar access" | Most apps only need to add events — EventKitUI does that with zero permissions. eventkit has the access tier decision tree. |
| "ShazamKit is just SHSession + a delegate" | iOS 17+ has SHManagedSession which eliminates all AVAudioEngine boilerplate. shazamkit has the era decision tree. |
| "I'll use CNContactStore directly for contact picking" | CNContactPickerViewController needs no authorization and shows all contacts. contacts has the access level decision tree. |
| "Contacts access is simple, just request and fetch" | iOS 18 limited access means your app may only see a subset. ContactAccessButton handles this gracefully. contacts covers the full model. |
Example Invocations
User: "How do I add Siri support for my app?" → Invoke: /skill axiom-app-intents-ref
User: "My widget isn't updating" → Invoke: /skill axiom-extensions-widgets
User: "My widget isn't showing updated SwiftData content" → Invoke: /skill axiom-extensions-widgets + also invoke ios-data router for App Group/shared container setup
User: "My Live Activity isn't updating and I'm getting push notification errors" → Invoke: /skill axiom-extensions-widgets for ActivityKit + also invoke ios-networking router for push delivery
User: "Implement in-app purchases with StoreKit 2" → Invoke: /skill axiom-in-app-purchases
User: "How do I localize my app strings?" → Invoke: /skill axiom-localization
User: "Implement haptic feedback for button taps" → Invoke: /skill axiom-haptics
User: "How do I set up a camera preview?" → Invoke: /skill axiom-camera-capture
User: "Camera freezes when I get a phone call" → Invoke: /skill axiom-camera-capture-diag
User: "What is RotationCoordinator?" → Invoke: /skill axiom-camera-capture-ref
User: "How do I let users pick photos in SwiftUI?" → Invoke: /skill axiom-photo-library
User: "User can't see their photos after granting access" → Invoke: /skill axiom-photo-library
User: "How do I save a photo to the camera roll?" → Invoke: /skill axiom-photo-library
User: "My background task never runs" → Invoke: /skill axiom-background-processing-diag
User: "How do I implement BGTaskScheduler?" → Invoke: /skill axiom-background-processing
User: "What's the difference between BGAppRefreshTask and BGProcessingTask?" → Invoke: /skill axiom-background-processing-ref
User: "How do I implement geofencing?" → Invoke: /skill axiom-core-location
User: "Location updates not working in background" → Invoke: /skill axiom-core-location-diag
User: "What is CLServiceSession?" → Invoke: /skill axiom-core-location-ref
User: "Review my in-app purchase implementation" → Invoke: iap-auditor agent
User: "Implement in-app purchases for my app" → Invoke: iap-implementation agent
User: "Check my camera code for issues" → Invoke: camera-auditor agent
User: "How do I add a map to my SwiftUI app?" → Invoke: /skill axiom-mapkit
User: "My annotations aren't showing on the map" → Invoke: /skill axiom-mapkit-diag
User: "How do I implement search with autocomplete on a map?" → Invoke: /skill axiom-mapkit-ref
User: "My map region keeps jumping when I scroll" → Invoke: /skill axiom-mapkit-diag
User: "How do I add directions between two points?" → Invoke: /skill axiom-mapkit-ref
User: "How do I schedule alarms in iOS 26?" → Invoke: /skill axiom-alarmkit-ref
User: "How do I integrate AlarmKit with Live Activities?" → Invoke: /skill axiom-alarmkit-ref
User: "How do I implement push notifications?" → Invoke: /skill axiom-push-notifications
User: "What APNs headers do I need?" → Invoke: /skill axiom-push-notifications-ref
User: "Push notifications work in dev but not production" → Invoke: /skill axiom-push-notifications-diag
User: "My Live Activity isn't updating via push" → Invoke: /skill axiom-push-notifications-diag + /skill axiom-extensions-widgets
User: "Should I use FCM or direct APNs?" → Invoke: /skill axiom-push-notifications
User: "How do I use pushTokenUpdates for Live Activities?" → Invoke: /skill axiom-extensions-widgets (ActivityKit API owns push token observation)
User: "How do I test push notifications without a real server?" → Invoke: /skill axiom-push-notifications-ref (command-line testing section)
User: "How do I implement passkey sign-in?" → Invoke: /skill axiom-passkeys
User: "How do I replace passwords with passkeys?" → Invoke: /skill axiom-passkeys
User: "How do I verify my app hasn't been tampered with?" → Invoke: /skill axiom-app-attest
User: "How do I prevent promotional fraud?" → Invoke: /skill axiom-app-attest
User: "How do I add an event to the user's calendar?" → Invoke: /skill axiom-eventkit
User: "What's the difference between write-only and full Calendar access?" → Invoke: /skill axiom-eventkit
User: "How do I create reminders programmatically?" → Invoke: /skill axiom-eventkit
User: "What is EKEventEditViewController?" → Invoke: /skill axiom-eventkit-ref
User: "How do I implement Siri Event Suggestions?" → Invoke: /skill axiom-eventkit-ref
User: "How do I let users pick a contact?" → Invoke: /skill axiom-contacts
User: "What is the Contact Access Button?" → Invoke: /skill axiom-contacts
User: "How do I search and fetch contacts?" → Invoke: /skill axiom-contacts-ref
User: "How do I build a Contact Provider extension?" → Invoke: /skill axiom-contacts-ref
User: "How do I detect contact changes for sync?" → Invoke: /skill axiom-contacts-ref