Development

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.

Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance.

WHEN: General Python code review, PEP8 compliance, type hints, Pythonic patternsWHAT: PEP8/style check + Type hint validation + Pythonic idioms + Error handling + DocumentationWHEN NOT: FastAPI → fastapi-reviewer, Django → django-reviewer, Data science → python-data-reviewer

Build embeddable chatbot widgets for web applications. Use when creating chat UIs, iframe embeds, or widget-based AI interfaces.

Use when creating, testing, iterating, or managing Claude Code skills. Handles skill scaffolding, git versioning, symlink management, auto-discovery testing, and quality assurance. Triggered by requests to create new skills, improve existing skills, test skill loading, or manage skill infrastructure.