apple-aso
Optimize Apple App Store metadata in store.config.json for ASO (App Store Optimization). Use when working with store.config.json,…
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/guide-swiftdata
SwiftData patterns — autosave, relationships, dangerous predicates, CloudKit constraints, indexing, class inheritance. Use when writing, reviewing, or debugging SwiftData code.
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Codex
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Cursor
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Gemini CLI
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GitHub Copilot
$ npx skills add Prisma-Labs-Dev/apple-skills --skill guide-swiftdata -a github-copilot -y
OpenCode
$ npx skills add Prisma-Labs-Dev/apple-skills --skill guide-swiftdata -a opencode -y
Windsurf
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SKILL.md
guide-swiftdata.SKILL.mdname: guide-swiftdata
description: SwiftData patterns — autosave, relationships, dangerous predicates, CloudKit constraints, indexing, class inheritance. Use when writing, reviewing, or debugging SwiftData code.
type: guide
origin: https://github.com/twostraws/SwiftData-Agent-Skill
license: MIT
> **Guide Skill** — This is an expert workflow/pattern guide, not API reference documentation. > Originally from [twostraws/SwiftData-Agent-Skill](https://github.com/twostraws/SwiftData-Agent-Skill) by Paul Hudson. MIT License.
SwiftData Patterns
Write and review SwiftData code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems — do not nitpick or invent issues.
Core Instructions
- Target Swift 6.2 or later, using modern Swift concurrency.
- Prefer SwiftData across the board. Do not suggest Core Data unless the feature cannot be solved with SwiftData.
- Do not introduce third-party frameworks without asking first.
Review Process
1. Check for core SwiftData issues using `references/core-rules.md`. 2. Check that predicates are safe and supported using `references/predicates.md`. 3. If the project uses CloudKit, check for CloudKit-specific constraints using `references/cloudkit.md`. 4. If the project targets iOS 18+, check for indexing opportunities using `references/indexing.md`. 5. If the project targets iOS 26+, check for class inheritance patterns using `references/class-inheritance.md`.
If doing partial work, load only the relevant reference files.
References
| Topic | Reference | |-------|-----------| | Autosave, relationships, delete rules, `@Query` restrictions, `#Unique`, `@Transient` | `references/core-rules.md` | | Supported predicates, dangerous patterns that crash at runtime, unsupported methods | `references/predicates.md` | | CloudKit constraints: no `#Unique`, optional requirements, eventual consistency | `references/cloudkit.md` | | Database indexing (iOS 18+), single and compound property indexes | `references/indexing.md` | | Model subclassing (iOS 26+), `@available` requirements, predicate filtering | `references/class-inheritance.md` |
Read more
name: guide-swiftdata description: SwiftData patterns — autosave, relationships, dangerous predicates, CloudKit constraints, indexing, class inheritance. Use when writing, reviewing, or debugging SwiftData code. type: guide origin: https://github.com/twostraws/SwiftData-Agent-Skill license: MIT
> **Guide Skill** — This is an expert workflow/pattern guide, not API reference documentation. > Originally from [twostraws/SwiftData-Agent-Skill](https://github.com/twostraws/SwiftData-Agent-Skill) by Paul Hudson. MIT License.
SwiftData Patterns
Write and review SwiftData code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems — do not nitpick or invent issues.
Core Instructions
- Target Swift 6.2 or later, using modern Swift concurrency.
- Prefer SwiftData across the board. Do not suggest Core Data unless the feature cannot be solved with SwiftData.
- Do not introduce third-party frameworks without asking first.
Review Process
1. Check for core SwiftData issues using `references/core-rules.md`. 2. Check that predicates are safe and supported using `references/predicates.md`. 3. If the project uses CloudKit, check for CloudKit-specific constraints using `references/cloudkit.md`. 4. If the project targets iOS 18+, check for indexing opportunities using `references/indexing.md`. 5. If the project targets iOS 26+, check for class inheritance patterns using `references/class-inheritance.md`.
If doing partial work, load only the relevant reference files.
References
| Topic | Reference | |-------|-----------| | Autosave, relationships, delete rules, `@Query` restrictions, `#Unique`, `@Transient` | `references/core-rules.md` | | Supported predicates, dangerous patterns that crash at runtime, unsupported methods | `references/predicates.md` | | CloudKit constraints: no `#Unique`, optional requirements, eventual consistency | `references/cloudkit.md` | | Database indexing (iOS 18+), single and compound property indexes | `references/indexing.md` | | Model subclassing (iOS 26+), `@available` requirements, predicate filtering | `references/class-inheritance.md` |
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Questions about guide-swiftdata.
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- guide-swiftdata installs in Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf with the skills CLI, using each agent's flag shown on this page. Flowy's auto-invocation, which fires a skill when your prompt matches, runs in Claude Code only.