Developer Tools & Repos Agent Skills for Claude Code

Creates simple Three.js web apps with scene setup, lighting, geometries, materials, animations, and responsive rendering.

Use when the user mentions Core Data review, schema migration, production crashes, or data safety checking.

Use when debugging schema migration crashes, concurrency thread-confinement errors, N+1 query performance, SwiftData to Core Data…

Use for Core Location troubleshooting - no location updates, background location broken, authorization denied, geofence not triggering

Use for Core Location implementation patterns - authorization strategy, monitoring strategy, accuracy selection, background location

Use for Core Location API reference - CLLocationUpdate, CLMonitor, CLServiceSession, authorization, background location, geofencing

Integration patterns for bare React Native CLI projects — pod install, Info.plist + AndroidManifest permissions, Apple privacy manifest…

Use when indexing app content for Spotlight search, using NSUserActivity for prediction/handoff, or choosing between CSSearchableItem and…

Expert knowledge of Godot's UI system including Control nodes, themes, styling, responsive layouts, and common UI patterns for menus…

Create or modify a CoreEx validator in the Application layer.

Write idiomatic C++ code with modern features, RAII, smart pointers, and STL algorithms.

Implement Command Query Responsibility Segregation for scalable architectures.

Comprehensive multi-agent Apple UI improvement.

Use when the user has a crash log (.ips, MetricKit JSON, legacy .crash text, .xccrashpoint bundle, or pasted text) that needs analysis.

Set up crash instrumentation with actionable context.

Printing Press CLI for Crates Io. Read-only endpoints for crates.io ecosystem intelligence.

Create a clean, single-target native app for iPhone, iPad, Mac, or all three with FreakUI.

Create a LiftLog workout plan (.liftlogplan file) that can be imported into the LiftLog app.

Commit all changes, push to a new branch, and create a pull request using the repo's PR template.

Guidelines for creating API routes in Expo Router with EAS Hosting

Build a `BaseTool[InSchema, OutSchema]` subclass — input/output schemas, `BaseToolConfig`, `run()` (and optional `run_async()`)…