Expert Core Data guidance for iOS/macOS stack setup, migrations, threading, and CloudKit sync.
Create detailed user stories, acceptance criteria, and feature specs
Example: Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios
Reduce spec writing time by 50%, ensure comprehensive coverage
Research competitors, compare features, identify gaps
Example: Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities
Complete competitive research in 2 hours instead of 2 days
Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs
Example: Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale
Make data-driven prioritization decisions faster
Draft PRDs, status updates, and stakeholder presentations
Example: Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement
Save 3-5 hours/week on communication overhead
Submit your Claude Code skill and start earning
epx add avdlee/core-data-agent-skill --skill core-data-expertCompatible with
Supported agents
Covers stack initialization, fetch requests, NSFetchedResultsController, saving patterns, and merge conflict resolution across all Core Data store types
Provides threading best practices for both traditional perform/performAndWait patterns and Swift Concurrency with actors and Sendable types
Includes batch operations, persistent history tracking, lightweight and staged migrations, and perfo
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versioncore-data-expertExecute the skills CLI command in your project's root directory to begin installation:
epx add avdlee/core-data-agent-skill --skill core-data-expertFetches core-data-expert from avdlee/core-data-agent-skill and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
.cursor/skills/core-data-expert
Restart Cursor to activate core-data-expert. Access via /core-data-expertin your agent's command palette.
Learn more:View source on GitHubSkills CLI docsAbout CursorWhat are agent skills?
Time estimate: 30-60 minutes to see productivity improvements
Prerequisites
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.
✗ Avoid when
Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.
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Keeps context tight: core-data-expert is the kind of skill you can hand to a new teammate without a long onboarding doc.
core-data-expert has been reliable in day-to-day use. Documentation quality is above average for community skills.
core-data-expert fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
We added core-data-expert from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
core-data-expert fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
We added core-data-expert from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Keeps context tight: core-data-expert is the kind of skill you can hand to a new teammate without a long onboarding doc.
I recommend core-data-expert for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Solid pick for teams standardizing on skills: core-data-expert is focused, and the summary matches what you get after install.
core-data-expert is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
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