Writing tests after code provides no proof they actually test anything. This skill enforces the Red-Green-Refactor cycle where every test must fail before implementation, ensuring tests verify real behavior.

Transform vague bug reports and feature requests into production-ready code through systematic investigation, test-driven development, and professional pull request workflows that follow modern CI/CD practices.

Maintain code quality while refactoring without breaking existing functionality. This skill provides comprehensive TDD workflows to guide safe code transformations.

Starting TDD without clear test definitions leads to incomplete coverage. This skill creates comprehensive failing tests that define expected behavior before implementation begins.

Learn to implement minimal code that makes failing tests pass during TDD green phase. Avoid over-engineering and keep implementations simple.

Developers struggle to maintain TDD discipline while managing complex projects. This skill orchestrates specialized agents through strict red-green-refactor cycles with automated validation and coverage tracking.

Developers waste time debugging code without tests. This skill enforces the RED-GREEN-REFACTOR cycle to build reliable software with confidence.

Building Rust applications requires proper project structure and configuration. This skill generates complete, idiomatic Rust project scaffolding with cargo tooling, module organization, testing setup, and best practices.

Stop wasting time on random fixes. This skill teaches AI assistants a structured debugging methodology that finds root causes before attempting fixes, reducing debugging time from hours to minutes.

SwiftUI developers struggle with state management complexity and deprecated API patterns. This skill provides fact-based guidance for modern SwiftUI development using @Observable, correct view composition, and iOS 26+ Liquid Glass styling.

Slow queries and poor schema design plague Postgres applications. This skill provides 26 prioritized rules from Supabase experts to achieve 10-1000x performance improvements.

This skill automates implementation task execution by dispatching fresh subagents for each task, with automatic two-stage review (spec compliance then code quality) ensuring high-quality results without manual oversight.

Stop reinventing the wheel with custom utilities and helpers. This skill teaches Clean Architecture and Domain-Driven Design principles to help you write maintainable, scalable code.

This skill analyzes your Rails application and provides a comprehensive upgrade assessment with version-specific guidance and a selective file merge plan to safely upgrade to newer Rails versions.

This skill automates the entire workflow of creating new CLI skills for Claude Code and GitHub Copilot. It handles brainstorming, template generation, validation, and installation so you can build reusable skills without manual configuration.

Shopify development requires mastering multiple technologies: OAuth authentication, GraphQL APIs, Liquid templating, and Polaris UI components. This skill provides validated code patterns, CLI workflows, and API integration guides to accelerate your Shopify projects.

Shopify app development requires understanding complex integration patterns. This skill provides proven patterns for embedded apps, webhook handling, and GraphQL API usage.

Create stunning visual effects and optimize graphics rendering with GPU shaders. This guide teaches GLSL syntax, vertex and fragment shaders, and shader math for real-time graphics.

Building modern fullstack applications requires coordination across multiple frameworks and best practices. This skill provides automated scaffolding, code quality analysis, and architecture patterns to help developers build production-ready applications faster.

Senior developers struggle to design systems that scale and remain maintainable over time. This skill provides architecture patterns, system design workflows, and technical decision frameworks to build enterprise-grade applications.