swiftdata

Persist, query, and manage SwiftData models in iOS 26+ apps.

Updated Apr 6, 2026
One-click install
npx skills add https://github.com/jperezdelreal/GymBro --skill swiftdata-jperezdelreal
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: swiftdata
Source: https://github.com/jperezdelreal/GymBro/tree/main/.squad/skills/ios/swiftdata
Command: npx skills add https://github.com/jperezdelreal/GymBro --skill swiftdata-jperezdelreal

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Persist, query, and manage structured data in iOS 26+ apps using SwiftData.

Core Features & Use Cases

  • Model Definition: Define @Model classes with @Attribute, @Relationship, and @Transient to model your domain.
  • ModelContainer Setup & CRUD: Configure ModelContainer, perform create/read/update/delete operations, and handle migrations.
  • SwiftUI & Concurrency: Integrate with SwiftUI via @ModelActor and manage concurrency safely.
  • Migration & Cloud Sync: Plan and execute schema migrations and CloudKit sync with ModelConfiguration.
  • Use Case: Build apps that require robust local data persistence, offline support, and data modeling without Core Data.

Quick Start

Define your SwiftData models and setup a container, then insert and fetch data via the modelContext.

Frequently Asked Questions about swiftdata

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I persist structured data in SwiftUI without Core Data?

You can persist structured data in SwiftUI by defining @Model classes and configuring a ModelContainer to handle CRUD operations locally, replacing the need for Core Data.

How do I define data models in SwiftData?

SwiftData models are defined by creating classes annotated with @Model, utilizing @Attribute, @Relationship, @Transient, and @Unique to accurately map your domain properties.

Does SwiftData support CloudKit synchronization and versioned migrations?

Yes, SwiftData supports CloudKit synchronization and versioned schema migrations by configuring ModelConfiguration to manage updates and sync structured data across devices.

How do I query data using FetchDescriptor in a SwiftData app?

You query data in SwiftData by configuring FetchDescriptor objects and executing them via the modelContext to retrieve and filter your persisted structured records.

Can I manage concurrency safely when accessing SwiftData models?

Yes, you can manage concurrency safely in SwiftData by utilizing @ModelActor to integrate data access with SwiftUI while ensuring thread-safe model operations.

What is the best way to handle schema migrations in iOS 26+ apps?

The best way to handle schema migrations in iOS 26+ apps is using SwiftData's versioned migrations with ModelConfiguration to update data models without losing persisted records.