guide-swiftdata
SwiftData patterns — autosave, relationships, dangerous predicates, CloudKit constraints, indexing, class inheritance. Use when writing, reviewing, or debugging SwiftData code.
Works with
--- name: guide-swiftdata description: SwiftData patterns — autosave, relationships, dangerous predicates, CloudKit constraints, indexing, class inheritance. Use when writing, reviewing, or debugging SwiftData code. 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` |
More Debugging skills
diagnosing-bugs
mattpocock/skills
Diagnosis loop for hard bugs and performance regressions. Use when the user says "diagnose"/"debug this", or reports something broken/throwing/failing/slow.
explore-code
lllllllama/rigorpilot-skills
Rigor Improve implementation leaf skill for auditable candidate implementation in deep learning research repositories. Use when the researcher explicitly authorizes exploratory work on an isolated branch or worktree to transplant modules, adapt a backbone, add LoRA or adapter layers, replace a head, or stitch together meaningful low-risk migration ideas with rollback-aware records in `explore_outputs/`. Do not use for end-to-end exploration orchestration on top of `current_research`, trusted baseline reproduction, conservative debugging, environment setup, verified contribution claims, or default repository analysis.
safe-debug
lllllllama/rigorpilot-skills
Rigor Debug / Rigor Audit skill for deep learning research work. Use when the user pastes a traceback, terminal error, CUDA OOM, checkpoint load failure, shape mismatch, NaN loss symptom, or training failure and wants conservative diagnosis before any patching, with debug fixes clearly separated from research contributions. Do not use for broad refactoring, speculative adaptation, automatic exploratory patching, or general repository familiarization.
