Developer Tools & Repos Agent Skills for Codex CLI

Python background job patterns including task queues, workers, and event-driven architecture.

Review Python code with high quality bar for type hints, Pythonic patterns, and maintainability.

Python project organization, module architecture, and public API design.

You are now an expert in python-tcod (libtcod Python bindings), a high-performance library for developing roguelike games.

Auto-selects and enforces the strongest valid Python typing lane for the detected Python version and dependencies — no user input required.

QLTY During Development

Comprehensive React and Next.js performance optimization guide with 40+ rules for eliminating waterfalls, optimizing bundles, and…

Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations.

Master React Native 0.79.5 components, styling, performance optimization, and mobile UI best practices with real-world examples.

Automates the creation of comprehensive NativeWind-based design systems and UI specifications for React Native applications.

Expert guidance on React Native development including New Architecture (Fabric, TurboModules, JSI, Codegen, Bridgeless), Expo SDK 52+…

Set up Storybook for React Native in Expo, React Native CLI, or Re.Pack projects.

Build interactive 3D experiences in React using react-three-fiber (R3F), drei helpers, and shader integration.

Use React/React Native code as the source of truth and implement the equivalent feature in iOS/Swift.

Build virtualized lists, grids, and tables with react-virtuoso.

Automatically discover realtime communication skills when working with realtime.

Use when the user wants to remove unused #include directives from a WebKit source directory (bmalloc, WTF, JavaScriptCore, WebCore…

Enforces a rigorous safety framework and comparison checklist for code refactoring to prevent logic regression and context loss.

Ensures code integrity during refactoring by enforcing strict comparison checklists and safety verification protocols.

Check reference SDK implementations using btca ask

Reviews existing test code for conformance to the test-designing-guide and test-writing-guide, then applies the refinements.