Summary
This enforces strict test-driven development for TypeScript projects by requiring you to write one failing test, make it pass with minimal code, then refactor. It blocks "horizontal splurging" where you write multiple tests at once, forcing a tight Red-Green-Refactor loop for each tiny feature increment. Use it when you need disciplined, verifiable progress on new features or bug fixes and want to prevent the AI from guessing or building ahead of your tests. The real value is in the backpressure: TypeScript's type system plus mandatory test failures create guardrails that keep implementations honest and incremental rather than speculative.
Install to Claude Code
npx -y skills add google-labs-code/design.md --skill tdd-red-green-refactor --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.md
Select a file.
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →First SeenJun 3, 2026
