About
The Test-Driven Development (TDD) skill implements a rigorous software engineering workflow for Claude, centered on the principle that no production code should be written without a failing test first. It guides the AI through the mandatory Red-Green-Refactor cycle, ensuring that tests verify intended behavior rather than implementation details. By establishing 'Iron Laws'—such as deleting code written before tests—and providing clear patterns for bug fixes and feature development, this skill significantly improves code quality, reduces regressions, and creates a self-documenting codebase.
