Skill UI

This comprehensive guide covers mastering modern JavaScript features (ES6+), advanced functional programming patterns, and industry best practices. It provides guidance on refactoring legacy code, optimizing performance, managing asynchronous operations, and building highly maintainable, scalable web applications.

This guide provides a comprehensive overview of PDF manipulation techniques using both Python libraries (like pypdf, pdfplumber, reportlab) and command-line tools (like pdftotext, qpdf). It covers core functionalities such as merging, splitting, rotating, extracting text and structured tables, creating new PDFs, and performing OCR on scanned documents, making it essential for automation workflows.

Provides Playwright-powered browser automation that detects dev servers, writes tests to /tmp, launches a visible Chromium, and exercises login flows, responsive layouts, form submissions, link checks, or any browser task to validate web functionality.

This skill guides the process of modernizing React applications. It covers crucial tasks such as major version upgrades, migrating from class components to functional components using hooks, adopting advanced concurrent features (like Suspense), and utilizing codemods for automated, large-scale code transformation. Ideal for maintaining and scaling complex React codebases.

This skill provides production-ready architectural patterns for developing mobile applications using React Native and Expo. It covers complex topics including state management, advanced navigation patterns, integrating native modules, and implementing robust offline-first functionalities. Ideal for starting new projects or optimizing existing mobile codebases to ensure scalable and performant results.

Runs a predefined suite of smoke tests to verify key application functionality, authentication, integrations, and system health after deployments, upgrades, or configuration updates.

Guides enterprise teams through Scala 3 functional programming, reactive Akka/Pekko systems, Spark pipelines, and type-safe tooling to deliver resilient distributed applications with observability, CI/CD, and JVM optimization.

A comprehensive developer reference covering the full spectrum of Shopify development, including Liquid templating, OS 2.0 architecture, GraphQL APIs (Admin and Storefront), and modern headless solutions using Hydrogen. This guide assists in building advanced themes, custom apps, implementing serverless business logic via Functions, and optimizing performance for modern e-commerce storefronts.

This skill specializes in optimizing complex SQL queries, designing efficient database schemas, and diagnosing performance bottlenecks across various SQL dialects (PostgreSQL, MySQL, SQL Server, etc.). Use it when dealing with slow queries, complex data aggregation, advanced joins, or when needing to implement best practices like CTEs, window functions, and covering indexes. It provides deep analysis of execution plans (EXPLAIN/ANALYZE) to ensure peak data retrieval performance.

Offers automated AWS Step Functions workflow support, triggering on relevant requests to guide users through common patterns, best practices, and production-ready code plus configuration snippets validated against standards.

Automates Supabase operations through the Rube MCP toolkit, letting you query tables, inspect schemas, execute SQL, manage projects/orgs, and monitor storage or edge functions with workflow-aware guidance.

This skill guides developers through the 'Green' phase of Test-Driven Development (TDD). The core principle is implementing only the minimal amount of code required to make currently failing tests pass. It emphasizes rapid, functional implementation first, deferring architectural improvements and complex refactoring until later passes. Ideal for quickly establishing basic functionality and satisfying test requirements.