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 Axiom 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

Axiom 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

Axiom 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

axiom_read_skill

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 with axiom_search_skills using source filter "apple"

Resources

Skills

axiom-ios-ui, axiom-ios-concurrency, axiom-ios-data, axiom-ios-ai, axiom-ios-integration