iOS Persistence (Core Data/Realm)
Specialized skill for iOS local data persistence solutions
npx skills add a5c-ai/babysitter --skill ios-persistence --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# iOS Persistence Skill ## Overview This skill provides specialized capabilities for iOS local data persistence solutions including Core Data and Realm. It enables designing data models, implementing migrations, configuring iCloud sync, and optimizing database performance. ## Allowed Tools - `bash` - Execute xcodebuild and swift commands - `read` - Analyze Core Data models and Realm schemas - `write` - Generate model classes and configurations - `edit` - Update existing persistence code - `glob` - Search for model files and configurations - `grep` - Search for patterns in persistence code ## Capabilities ### Core Data 1. **Model Design** - Design .xcdatamodel files - Generate NSManagedObject subclasses - Configure entity relationships - Set up fetch request templates - Define validation rules 2. **CRUD Operations** - Implement fetch requests with predicates - Configure sorting and sectioning - Handle batch operations - Implement cascading deletes - Configure uniquing constraints 3. **Migrations** - Configure lightweight migrations - Implement custom migration mappings - Handle version compatibility - Design progressive migration paths - Test migration scenarios 4. **CloudKit Integr
- Overview
- Allowed Tools
- Capabilities
- Core Data
- Realm Swift
- Target Processes
- Dependencies
- Required
- Optional
- Configuration
- Core Data Stack
- Realm Configuration
- Usage Examples
- Core Data Entity
What does the iOS Persistence (Core Data/Realm) skill do?
Specialized skill for iOS local data persistence solutions
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill ios-persistence --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.