Forces writing tests before code, producing more stable logic. Initial pace is ~20-30% slower, but bug rate drops measurably.
Install
npx skills add obra/superpowers@test-driven-development -y -g Cross-tool: Claude Code ~/.claude/skills/ · Qoder ~/.qoder/skills/ · TRAE ~/.trae/skills/
SourceForces tests-first, producing more stable logic. Initial pace ~20-30% slower, but bug rate drops.
Complex business logic, core code in multi-person teams, features that need long-term maintenance. Avoid forcing TDD on pure UI components and glue code.