Test-driven development

The top-rated launch-quality Test-driven development skill for AI agents is tdd-guide (grade A), followed by test-driven-development and xp-copilot. Skillspace rates 382 Test-driven development skills; 48 are launch-quality.

Drive implementation test-first through red-green-refactor and related test-before-code disciplines, including enforcing or reviewing TDD practice on a change.

Launch-quality skills first, then by grade, then by our Skill Score, which adds judge reviews, test results, GitHub stars and adoption.

  1. tdd-guide A
  2. test-driven-development B
  3. xp-copilot B
  4. tdd-helper B
  5. outside-in-tdd C
  6. common-tdd C
  7. code-assist C
  8. red-green-fix C
  9. red-green-refactor C
  10. software-implementation C
  11. tdd-test-engineer C
  12. tdd C
  13. testing C
  14. software-test-creation C
  15. 054-design-tdd C
  16. behavior-driven-development C
  17. tdd-workflow C
  18. build-doctrine C
  19. tdd-master C
  20. tdd-dev-cycle C
  21. symfony:tdd-with-pest C
  22. skill-tdd C
  23. implement C
  24. aibdd-green-execute C
  25. test-first C

Frequently asked questions

What is the best Test-driven development skill for AI agents?

The top-rated launch-quality Test-driven development skill for AI agents is tdd-guide (grade A), followed by test-driven-development and xp-copilot. Skillspace rates 382 Test-driven development skills; 48 are launch-quality.

How does Skillspace rate Test-driven development skills?

Skillspace grades every Test-driven development skill from A to F with a published scoring engine that reads the skill's SKILL.md: architecture and maturity make the score, and a security scan can cap it. In crowded categories, a judge model also compares the strongest contenders side by side, and some skills are tested head-to-head on real tasks against other skills in the same category (including a deliberately weak one) and a no-skill baseline. Launch-quality skills are graded A to C with a clean safety verdict, and not excluded by a quality filter: the filters catch skills our model's safety screen flags for prompt injection, guardrail bypass, harmful content or credential exposure; test fixtures and attack benchmarks; skills written only for the repository they live in; templates and stubs; and near-duplicate variants and copies of other skills. Ratings were last updated on 24 September 2026; the full method is on the methodology page.

Are Test-driven development skills safe to install?

Of the 382 Test-driven development skills Skillspace rates, 370 passed its safety scan and 12 are flagged: 2 for review, 8 as risky and 2 as unsafe. Each skill's page shows its safety verdict. A pass is not a guarantee: the scan reads only the skill's SKILL.md, not the scripts or other files it ships, and looks for patterns such as piping a remote script into a shell, reading credentials or hiding actions from the user. Skills are third-party code that Skillspace indexes but does not host or endorse, so read a skill's source on GitHub before you install it.

Skillspace indexes and rates skills; it does not host or endorse them. Run third-party skills at your own risk.