---
name: apple-docs-index
user-invocable: true
description: Index of Apple developer documentation for iOS, macOS, and related frameworks. Use when looking up what APIs exist in a framework, browsing available documentation, or deciding what docs to fetch. Covers SwiftUI, UIKit, Core Animation (QuartzCore), XCTest, HealthKit, Combine, SwiftData, and more.
---

# Apple Documentation Index

This skill provides indexes of Apple framework documentation. Use these to:
- Browse available APIs in a framework
- Find the path to specific documentation
- Decide what detailed docs to download

## Available Indexes

| Framework | File | Size | Topics |
|-----------|------|------|--------|
| SwiftUI | `../swiftui/swiftui-overview.md` | 907KB | Views, modifiers, navigation, state |
| XCTest | `xctest-index.md` | 55KB | Testing, assertions, expectations |
| XCUIAutomation | `xcuiautomation-index.md` | 58KB | UI testing, elements, queries |
| UIKit | `../uikit/uikit-overview.md` | 1.8MB | Views, controllers, controls, scenes |
| Core Animation | `../core-animation/core-animation-index.md` | 80KB | CALayer, CAAnimation, CATransaction, layer subclasses |
| HealthKit | `healthkit-index.md` | 312KB | Health data, workouts, records |
| Combine | `combine-index.md` | 153KB | Publishers, subscribers, operators |
| SwiftData | `swiftdata-index.md` | 86KB | Models, containers, queries |
| Observation | `observation-index.md` | 3KB | @Observable macro |

## How to Use

### 1. Browse an Index

```bash
# See what's in HealthKit
cat healthkit-index.md | head -100

# Search for specific topic
grep -i "workout" healthkit-index.md
grep -i "navigation" ../swiftui/swiftui-overview.md
```

### 2. Find Documentation Paths

Index files list all available documentation pages. Each entry shows the path:

```markdown
- [HKWorkout](/documentation/healthkit/hkworkout)
- [NavigationStack](/documentation/swiftui/navigationstack)
```

### 3. Fetch More Detailed Docs

1. Check whether the detailed page is already available in one of your installed Apple skills.
2. Use skill names, descriptions, or `SKILL.md` frontmatter to find likely skill directories, then grep their local `.md` files before fetching. This is faster and uses less context than fetching new docs from the internet.
3. If no installed skill has the page, use the same path with the `sosumi.ai` Markdown mirror.

For example, `/documentation/healthkit/hkworkout` maps to `https://sosumi.ai/documentation/healthkit/hkworkout`.

### 4. Browse Missing Framework Indexes

If the local indexes don't include the framework you need, use the framework's `sosumi.ai` index:

```text
https://sosumi.ai/documentation/{framework}
```

For example, `https://sosumi.ai/documentation/foundation` provides a Markdown index you can search for Foundation paths.

If the Markdown mirror is unavailable and your environment can parse JSON, Apple's public DocC index endpoint is:

```text
https://developer.apple.com/tutorials/data/index/{framework}
```

The useful path tree is under `interfaceLanguages.swift[0].children`.


---
Source attribution: vabole
Original project: https://github.com/vabole/apple-skills
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2026 Ilia Abolhasani

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: vabole
Original project: https://github.com/vabole/apple-skills
Attribution basis: Original project named by vendored-folder README

Fields of work: Development & Engineering, Product Management
Roles: Frontend Developer, Mobile Developer, Product Manager
Specialties: API
Tools: Sosumi.Ai
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: edd8189daca8c85579d8037bbbab2335d7d929f8b79689d48d57df147f2828e3
Metadata reviewed: 2026-10-27
This metadata supersedes earlier Dave AI catalog attribution. Original instruction and supporting files are preserved.