About
TDD Guard is a Claude Code plugin that automatically enforces Test-Driven Development principles during AI-assisted coding sessions. It blocks implementation attempts without failing tests, prevents over-implementation, and integrates with your linter to enforce the full red-green-refactor cycle. Supports Vitest, Jest, pytest, PHPUnit, Go, Rust, RSpec, and more.
Why it made the leaderboard
If you use Claude Code for serious development, TDD Guard prevents the most common AI coding anti-pattern: shipping implementation code with no tests, or writing tests after the fact. It enforces the red-green-refactor cycle at the agent level, so you get professional engineering discipline without manually policing every AI-generated file.
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