Coding standards, frameworks, refactoring, and code review (16.4K skills)
Diagnose slow loading, high memory use, and low frame rates in USD 3D scenes. Coordinate scene structure checks, validation, optimization, and before-and-after performance comparisons, then produce a report documenting findings and changes.
Diagnose failed OpenAI API requests by separating network problems, authentication errors, exhausted credits, rate limits, and access restrictions. Use concrete error messages to explain the likely cause and direct users to the appropriate next action.
Prepare a ChatGPT Apps submission JSON file by inspecting an MCP server, which exposes tools to AI agents. Generate app details, tool behavior justifications, and test cases, then report review findings and missing output schemas.
Turn a selected screenshot, mockup, or generated image into a responsive website or web app. Recreate its layout and visual assets, implement core interactions, and compare the running result with the reference in a browser.
Evaluate a local Codex skill for metadata, structure, reference links, size, and helper code quality. Get prioritized fixes and explanations, with benchmark setup for deeper analysis and measurement recommendations when observed usage is available.
Handles credentials before Codex builds or runs tools that use the OpenAI API. Checks for an existing key without revealing it, asks whether to reuse or create one, and saves credentials only to a confirmed local destination.
Build, refactor, and troubleshoot ChatGPT apps with an MCP server, which exposes tools to the assistant, and an interactive widget. Use official documentation and examples to plan tools, scaffold code, configure security settings, and validate local operation.
Improve an evaluated Codex skill by turning plugin-eval findings into prioritized changes. Refine activation descriptions, shorten SKILL.md, move lengthy details into supporting files, fix structural issues, and compare evaluation results before and after the rewrite.
Plan a browser game's architecture before coding. Choose an engine, separate game rules from rendering, and define input, assets, menus, saves, debugging, and performance checks within a shared design.
Build 3D browser games and interactive scenes inside React apps with React Three Fiber. Organize gameplay logic, coordinate scene and interface state, and connect the 3D experience with standard web menus, settings, and status displays.
Build 2D browser games with Phaser, TypeScript, and Vite. Organize gameplay rules separately from rendering, implement cameras and sprite animation, and add HTML overlays for status displays and menus.
Prepare 3D models for browser games by cleaning source assets, exporting GLB or glTF, and optimizing geometry and textures. It also guides collision shapes, distance-based detail levels, and runtime checks for the chosen engine.
Find and install reusable HyperFrames blocks and effect components, then integrate them into an existing composition. Configure block timing and layer order, merge component HTML, CSS, and JavaScript, and adjust installation paths.
Build browser-based 3D games with Three.js, TypeScript, and Vite. Structure scene and camera control, model loading, physics, and interface overlays separately from game rules, with guidance for WebGL rendering diagnostics and performance.
Write GSAP animations for HyperFrames compositions, from element entrances to coordinated sequences. Use timelines to organize timing, control playback, adapt motion to screen size and reduced-motion preferences, and choose animation properties suited to efficient rendering.
Build or modify Expo native modules and views using Swift, Kotlin, and TypeScript. Guides scaffolding, native function bindings, events, lifecycle hooks, and configuration so Expo apps can use platform features or existing native SDKs.
Use SwiftUI interface components and appearance settings in an Expo SDK 55 app. The skill guides package installation, wrapping SwiftUI content in Host, and embedding React Native components within a SwiftUI layout.
Turn Figma designs into screen code that fits an existing project. The workflow reuses existing components and shared style values, follows design notes, and uses exported images and icons to preserve the design’s appearance.
Bring existing React web components and browser-only libraries into Expo apps with DOM components. Render them in a WebView, an embedded browser view, on native platforms and directly on the web to support gradual migration.
Connect an Expo project to the Codex app Run button by creating a local launch script and action configuration. Start the development server from the app, view its logs, and optionally add platform-specific launch buttons.
Plan the early stages of a browser game by choosing suitable technology and coordinating gameplay, interface, assets, and playtesting. It defaults to Phaser for 2D games and routes more specific work to the relevant specialist skills.
Build Android interfaces in Expo using Jetpack Compose components and modifiers, which control layout and appearance. The skill guides component selection, sizing, scrollable lists, and XML icons for SDK 55.
Translate Figma designs into SwiftUI code, or bring SwiftUI views, screens, and design tokens into Figma. The guidance preserves iOS interface patterns, semantic colors, and SF Symbols names across both directions.
Create server endpoints in Expo Router and deploy them with EAS Hosting. Use them to keep API keys off the client, validate incoming data, access databases, proxy external services, and receive webhook notifications.