Core Data Agent Skill — Data skill for Claude Code

Core Data Agent Skill

Expert guidance for any AI coding tool that supports the [Agent Skills open format](https://agentskills.io/home) — safe persistence, performance optimization, and schema migration.

Based on the [Core Data Best Practices](https://github.com/AvdLee/CoreDataBestPractices) repo, WeTransfer production apps, and WWDC sessions, distilled into actionable, concise references for agents.

Who this is for

• Teams working with Core Data who need safe defaults and quick triage
• Developers debugging persistence issues, threading errors, or performance problems
• Anyone migrating schemas or integrating CloudKit sync

See also my other skills:

• Swift Concurrency Expert
• SwiftUI Expert
• Swift Testing Expert

How to Use This Skill

Option A: Using skills.sh (recommended)

Install this skill with a single command:

npx skills add https://github.com/avdlee/core-data-agent-skill --skill core-data-expert

For more information, visit the [skills.sh platform page](https://skills.sh/avdlee/core-data-agent-skill/core-data-expert).

Then use the skill in your AI agent, for example:

Use the core data skill and analyze the current project for Core Data improvements

Option B: Claude Code Plugin

Personal Usage

To install this Skill for your personal use in Claude Code:

1. Add the marketplace:

   /plugin marketplace add AvdLee/Core-Data-Agent-Skill

2. Install the Skill:

   /plugin install core-data-expert@core-data-agent-skill

Project Configuration

To automatically provide this Skill to everyone working in a repository, configure the repository's `.claude/settings.json`:

{
  "enabledPlugins": {
    "core-data-expert@core-data-agent-skill": true
  },
  "extraKnownMarketplaces": {
    "core-data-agent-skill": {
      "