Apple Documentation Router
Apple bundles for-LLM markdown documentation inside Xcode. These are authoritative, up-to-date guides and diagnostics written by Apple engineers. Use them alongside iOS Skill Pack skills for the most accurate information.
When to Use
Use Apple's bundled docs when:
- You need the exact API signature or behavior from Apple
- iOS Skill Pack skills reference an Apple framework and you want the official source
- A Swift compiler diagnostic needs explanation
- The user asks about a specific Apple framework feature
Priority: iOS Skill Pack skills provide opinionated guidance (decision trees, anti-patterns, pressure scenarios). Apple docs provide authoritative API details. Use both together.
Guide Topics (AdditionalDocumentation)
Read these with the MCP skill-reading tool using the skill name.
UI & Design
| Topic | Skill Name |
|---|
| Liquid Glass in SwiftUI | apple-guide-swiftui-implementing-liquid-glass-design |
| Liquid Glass in UIKit | apple-guide-uikit-implementing-liquid-glass-design |
| Liquid Glass in AppKit | apple-guide-appkit-implementing-liquid-glass-design |
| Liquid Glass in WidgetKit | apple-guide-widgetkit-implementing-liquid-glass-design |
| SwiftUI toolbar features | apple-guide-swiftui-new-toolbar-features |
| SwiftUI styled text editing | apple-guide-swiftui-styled-text-editing |
| SwiftUI WebKit integration | apple-guide-swiftui-webkit-integration |
| SwiftUI AlarmKit integration | apple-guide-swiftui-alarmkit-integration |
| Swift Charts 3D visualization | apple-guide-swift-charts-3d-visualization |
| Foundation AttributedString | apple-guide-foundation-attributedstring-updates |
Data & Persistence
| Topic | Skill Name |
|---|
| SwiftData class inheritance | apple-guide-swiftdata-class-inheritance |
Concurrency & Performance
| Topic | Skill Name |
|---|
| Swift concurrency updates | apple-guide-swift-concurrency-updates |
| InlineArray and Span | apple-guide-swift-inlinearray-span |
Apple Intelligence
| Topic | Skill Name |
|---|
| Foundation Models (on-device LLM) | apple-guide-foundationmodels-using-on-device-llm-in-your-app |
System Integration
| Topic | Skill Name |
|---|
| App Intents updates | apple-guide-appintents-updates |
| StoreKit updates | apple-guide-storekit-updates |
| MapKit GeoToolbox | apple-guide-mapkit-geotoolbox-placedescriptors |
| Widgets for visionOS | apple-guide-widgets-for-visionos |
Accessibility
| Topic | Skill Name |
|---|
| Assistive Access in iOS | apple-guide-implementing-assistive-access-in-ios |
Computer Vision
| Topic | Skill Name |
|---|
| Visual Intelligence in iOS | apple-guide-implementing-visual-intelligence-in-ios |
Swift Compiler Diagnostics
These explain specific Swift compiler errors and warnings with examples and fixes.
Concurrency Diagnostics
| Diagnostic | Skill Name |
|---|
| Actor-isolated call from nonisolated context | apple-diag-actor-isolated-call |
| Conformance isolation | apple-diag-conformance-isolation |
| Isolated conformances | apple-diag-isolated-conformances |
| Nonisolated nonsending by default | apple-diag-nonisolated-nonsending-by-default |
| Sendable closure captures | apple-diag-sendable-closure-captures |
| Sendable metatypes | apple-diag-sendable-metatypes |
| Sending closure risks data race | apple-diag-sending-closure-risks-data-race |
| Sending risks data race | apple-diag-sending-risks-data-race |
| Mutable global variable | apple-diag-mutable-global-variable |
| Preconcurrency import | apple-diag-preconcurrency-import |
Type System Diagnostics
| Diagnostic | Skill Name |
|---|
| Existential any | apple-diag-existential-any |
| Existential member access limitations | apple-diag-existential-member-access-limitations |
| Nominal types | apple-diag-nominal-types |
| Multiple inheritance | apple-diag-multiple-inheritance |
| Protocol type non-conformance | apple-diag-protocol-type-non-conformance |
| Opaque type inference | apple-diag-opaque-type-inference |
Build & Migration Diagnostics
| Diagnostic | Skill Name |
|---|
| Deprecated declaration | apple-diag-deprecated-declaration |
| Error in future Swift version | apple-diag-error-in-future-swift-version |
| Strict language features | apple-diag-strict-language-features |
| Strict memory safety | apple-diag-strict-memory-safety |
| Implementation only deprecated | apple-diag-implementation-only-deprecated |
| Member import visibility | apple-diag-member-import-visibility |
| Missing module on known paths | apple-diag-missing-module-on-known-paths |
| Clang declaration import | apple-diag-clang-declaration-import |
| Availability unrecognized name | apple-diag-availability-unrecognized-name |
| Unknown warning group | apple-diag-unknown-warning-group |
Swift Language Diagnostics
| Diagnostic | Skill Name |
|---|
| Dynamic callable requirements | apple-diag-dynamic-callable-requirements |
| Property wrapper requirements | apple-diag-property-wrapper-requirements |
| Result builder methods | apple-diag-result-builder-methods |
| String interpolation conformance | apple-diag-string-interpolation-conformance |
| Trailing closure matching | apple-diag-trailing-closure-matching |
| Temporary pointers | apple-diag-temporary-pointers |
Routing Decision Tree
User question about Apple API/framework?
├── Specific compiler error/warning → Read matching apple-diag-* skill
├── Liquid Glass implementation → Read apple-guide-*-liquid-glass-design (SwiftUI/UIKit/AppKit)
├── Swift concurrency patterns → Read apple-guide-swift-concurrency-updates
├── Foundation Models / on-device AI → Read apple-guide-foundationmodels-*
├── SwiftData features → Read apple-guide-swiftdata-*
├── StoreKit / IAP → Read apple-guide-storekit-updates
├── App Intents / Siri → Read apple-guide-appintents-updates
├── Charts / visualization → Read apple-guide-swift-charts-3d-visualization
├── Text editing / AttributedString → Read apple-guide-swiftui-styled-text-editing or apple-guide-foundation-attributedstring-updates
├── WebKit in SwiftUI → Read apple-guide-swiftui-webkit-integration
├── Toolbar features → Read apple-guide-swiftui-new-toolbar-features
└── Other → Search available skills with source filter "apple"
Resources
Skills: ios-ios-ui, ios-ios-concurrency, ios-ios-data, ios-ios-ai, ios-ios-integration
