# Swiftdata

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

- Skill: `rshankras/swiftdata` (Agent Skill)
- Install (CLI): `npx skillmds add rshankras/swiftdata`
- Raw SKILL.md: https://api.skillmd.com/api/skills/rshankras/swiftdata/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: rshankras (https://skillmd.com/u/rshankras)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/rshankras/swiftdata

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# 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`.