---
name: SwiftData
slug: swiftdata
category: AI Engineering
description: SwiftData covers class inheritance patterns for hierarchical models, type-based querying, polymorphic relationships, and inheritance-vs-enum decisions. Use it when designing SwiftData model hierarchies.
github: "https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/swiftdata"
language: Swift
stars: 659
forks: 60
install: "npx degit https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/swiftdata ~/.claude/skills/swiftdata"
installs_to: ~/.claude/skills/swiftdata
source_path: skills/swiftdata/SKILL.md
collection_size: 25
category_size: 2451
collection_url: "https://dirskills.com/collections/rshankras/claude-code-apple-skills"
added: 2026-08-24T05:17:24.258Z
last_synced: 2026-08-24T05:17:24.258Z
canonical_url: "https://dirskills.com/skills/swiftdata"
---

# SwiftData

SwiftData covers class inheritance patterns for hierarchical models, type-based querying, polymorphic relationships, and inheritance-vs-enum decisions. Use it when designing SwiftData model hierarchies.

**Install:**

```bash
npx degit https://github.com/rshankras/claude-code-apple-skills/tree/main/skills/swiftdata ~/.claude/skills/swiftdata
```

## README

# SwiftData Skills

SwiftData modeling patterns beyond the basics.

## When This Skill Activates

Use this skill when the user:
- Designs **hierarchical SwiftData models** (class inheritance)
- Needs **type-based or polymorphic queries**
- Weighs **inheritance vs enum** for model variants

## Available Skills

Paths are relative to THIS file's directory — skills run with cwd set to the
user's project, so resolve each path from this SKILL.md's own location.

| Skill | Read | Covers |
|-------|------|--------|
| inheritance | `inheritance/SKILL.md` | Class inheritance, polymorphic relationships, type-based querying, inheritance-vs-enum |

## How to Route

1. Read `inheritance/SKILL.md` (relative to this file) plus any reference files it lists.
2. Apply the guidance to the user's code. For broader macOS SwiftData architecture, see also `../macos/swiftdata-architecture/SKILL.md`.