Development

Playwright E2E testing patterns for TaxHelper. Use for auth redirects, insights drill-down, mobile viewport checks, and PWA verification.

Scrape, crawl, search, and extract structured data from websites using Firecrawl API - converts web pages to LLM-ready markdown

Modify OpenAI ChatKit starter to use FastAPI backend instead of OpenAI API, including citation support and error handling.

Agentic workflow for cloning websites with pixel-perfect fidelity using specialized sub-agents. Use when the user wants to clone/copy/replicate a website, create a landing page based on an existing site, or needs to extract and recreate a website's design. Includes orchestration via slash command, four specialized sub-agents (screenshotter, extractor, cloner, qa-reviewer), and outputs React components with Tailwind CSS and motion animations.

TypeScript project initialization best practices

掌握高级提示工程技术，以最大化生产环境中LLM的性能、可靠性和可控性。在优化提示、改进LLM输出或设计生产提示模板时使用。

Implement SEO best practices in Next.js applications. Includes metadata, Open Graph tags, canonical URLs, sitemap generation, schema markup, and performance optimization for search ranking.

Create and add UI elements with Tailwind CSS v3 using best practices. Automatically fetches up-to-date Tailwind documentation via Context7 MCP. Use when building new UI components, forms, layouts, or modifying existing interface elements.

Expert in Model Context Protocol (MCP) server development. Use when building MCP servers, creating tools for Claude, implementing resources, debugging MCP connections, or integrating databases with Claude Code.

Use when implementing iOS 26 features (Liquid Glass, new SwiftUI APIs, WebView, Chart3D), deploying iOS 26+ apps, or supporting backward compatibility with iOS 17/18.

Sanitizing and validating user input to prevent XSS, injection attacks, and security vulnerabilities in TypeScript applications

Optimize system prompts for Claude Code agents using proven prompt engineering patterns. Use when users request prompt improvement, optimization, or refinement for agent workflows, tool instructions, or system behaviors.

"""Best practices and patterns for writing idiomatic Rust code.

Utility scripts directory configuration (/scripts) for MetaSaver monorepos including setup automation, environment management, and cross-platform support. Includes 4 critical standards (setup scripts, cross-platform support, error handling, documentation). Use when creating or auditing /scripts directory with Node.js and shell utility scripts.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Use when writing background jobs or async operations - enforces thin job wrappers (3-5 lines) that delegate to models using _later/_now naming pattern

Expert implementation guide for custom Clean Architecture pattern in Golang projects. Use when implementing features with domain-driven design, creating API endpoints, or working with this specific 4-layer architecture (Domain, Application, Integration, Infrastructure). NOT Uncle Bob's standard Clean Architecture - this is a specialized adaptation with strict dependency rules and specific conventions.

Transforms design tokens into platform-specific formats (CSS, SCSS, iOS Swift, Android XML). Use when setting up multi-platform token pipelines, creating build processes, or managing cross-platform design systems.

Create and modify Django models with proper fields, relationships, and soft-delete support. Use when adding models, modifying fields, creating relationships, or changing database schema.

Use when implementing any feature or bugfix, before writing implementation code - write the test first, watch it fail, write minimal code to pass; ensures tests actually verify behavior by requiring failure first