Development

This skill provides comprehensive knowledge for Cloudflare Images, covering both the Images API (upload/storage) and Image Transformations (optimize any image). It should be used when uploading images to Cloudflare, resizing images, optimizing image delivery, implementing direct creator uploads, creating image variants, generating signed URLs for private images, transforming images via Workers, or encountering image upload/transformation errors.Use when: setting up Cloudflare Images storage, implementing user-uploaded images, creating responsive images, optimizing image formats (WebP/AVIF), resizing images via URL or Workers, debugging CORS errors with direct uploads, handling image transformation errors (9401-9413), implementing signed URLs, managing image variants, or building image CDNs.Keywords: cloudflare images, image upload cloudflare, imagedelivery.net, cloudflare image transformations, /cdn-cgi/image/, direct creator upload, image variants, cf.image workers, signed urls images, flexible variants,

Create an interactive educational MicroSim using the p5.js JavaScript library with distinct regions for drawing and interactive controls. Each MicroSim is a directory located in the /docs/sims folder. It has a main.html file that references the javascript code and the main.html can be referenced as an iframe from the index.md. The metadata.json contains Dublin core metadata about the MicroSim.

Systematic framework for contributing to open source projects. Guides through issue discovery, integrated analysis with code exploration, implementation, and PR creation. Use when starting OSS contributions, analyzing issues, or creating pull requests. Includes modular sub-skills for each contribution phase.

Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Codex needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale.

Your approach to handling testing sybil. Use this skill when working on files where testing sybil comes into play.

Creates custom output styles for Claude Code that modify system prompts and behavior. Use when the user asks to create output styles, customize Claude's response format, generate output-style files, or mentions output style configuration.

Next.js 16 portfolio with MDX blog/projects, Once UI, auto SEO, and endless theming.

Build cross-platform mobile apps with React Native.

Zustand state management patterns for React Native. Use when working with Zustand stores, debugging state timing issues, or implementing async actions in Zustand.

Convert subtitle files (WebVTT .vtt and SubRip .srt) into clean, readable text documents with multi-language support (English, Traditional Chinese, Simplified Chinese). Auto-detects format and language, removes timestamps and formatting, merges captions into natural paragraphs, strips annotations, and fixes spacing appropriately for each language. Use when the user provides a subtitle file or asks to convert captions to text.

Use when creating, improving, or troubleshooting Claude Code slash commands. Expert guidance on command structure, arguments, frontmatter, tool permissions, and best practices for building effective custom commands.

Modern HTTP client for Clojure wrapping JDK 11+ java.net.http. Use when working with HTTP requests, REST APIs, async HTTP calls, WebSockets, or needing HTTP/2 support.

Enterprise Mermaid diagramming skill for Claude Code using MCP Playwright

Apply optimization techniques to extend effective context capacity. Use when context limits constrain agent performance, when optimizing for cost or latency, or when implementing long-running agent systems.

Systematically retrieve and address PR code review comments using make pr-comments. Enforces DDD architecture, code organization principles, and quality standards. Use when handling code review feedback, refactoring based on reviewer suggestions, or addressing PR comments.

Detects N+1 queries, suggests eager loading, and recommends database indexes

Expert guide for optimizing Next.js performance - images, fonts, code splitting, caching, and Core Web Vitals. Use when improving load times or debugging performance issues.

Apply systematic debugging methodology. Use when investigating bugs, unexpected behavior, or when user reports issues. Auto-apply when conversation includes "bug", "broken", "not working", "wrong", "glitch", "flickering".

Generates vite.config.ts for building and serving the Vue 3 application. Configures dev server, API proxy, build format, and plugins.

Use when debugging web applications or automating browser tasks. Leverage Chrome DevTools MCP for inspection, performance analysis, and automated testing.