Agent skills for Codex CLI

Two-layer copy editor. Layer 1 is a deterministic typography audit (regex-level, auto-closeable). Layer 2 is LLM judgment — reject-list…

Copy a feature flag from one PostHog project to one or more target projects in the same organization.

For rights checks under the Copyright Act and Publishing Act: defines the standard, burden of proof and counter-argument; result: test…

Write and rewrite marketing copy for landing pages, homepages, and ads.

Generates high-conversion marketing copy, headlines, and call-to-actions (CTAs) optimized for the Korean market.

Apply evidence-based psychological mechanisms to produce copy that creates desire, overcomes resistance, and drives the target behavior.

Handle Corall marketplace orders. Triggers when a webhook message arrives from \"Corall\" (name field equals \"Corall\"), or when the user…

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…

Expert Core Data guidance (iOS/macOS): stack setup, fetch requests & NSFetchedResultsController, saving/merge conflicts, threading & Swift…

Enforces minimal-impact, defensive coding standards to ensure code reliability and prevent over-engineering during modifications.

Elite mobile app image-generation skill for creating premium, app-native screen concepts and flows.

Core distributed systems patterns - load balancing, caching, sharding, consistent hashing, message queues, rate limiting, CDN, Bloom…

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

Integrate Core ML models in iOS apps for on-device machine learning inference.

Use when planning new projects, onboarding, or reviewing architectural decisions.

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

Core Web Vitals optimization for LCP, INP, CLS with 2026 thresholds, performance budgets, and RUM.

Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking.