Claude Code skills for testing
Short answer: for TDD, install test-driven-development from obra/superpowers. For browser tests, install Anthropic's webapp-testing. Then add a skill for your test runner. Our database tags 10,087 open-license skills for testing, so match the runner skill to your stack.
Want picks for your own repo? Scan your project free. You see the match count and 2 picks. The full list is $9 once, up to 30 ranked picks for that scan.
5 testing skills to start with
| Skill | Repo | License | What it covers | Install |
|---|---|---|---|---|
| test-driven-development | obra/superpowers | MIT | Write the test first, then the code | npx skills add obra/superpowers --skill test-driven-development --agent claude-code |
| webapp-testing | anthropics/skills | Apache-2.0 | Tests a local web app with Playwright | npx skills add anthropics/skills --skill webapp-testing --agent claude-code |
| test-gap-audit | github/awesome-copilot | MIT | Read-only audit of missing or weak tests | npx skills add github/awesome-copilot --skill test-gap-audit --agent claude-code |
| mutation-testing | trailofbits/skills | CC-BY-SA-4.0 | Mutation runs that show which tests miss bugs | npx skills add trailofbits/skills --skill mutation-testing --agent claude-code |
| vitest-skill | LambdaTest/agent-skills | MIT | Writes Vitest tests for JavaScript and TypeScript | npx skills add LambdaTest/agent-skills --skill vitest-skill --agent claude-code |
The npx skills command comes from the open skills CLI. The --agent claude-code flag puts the skill in .claude/skills/, where Claude Code looks for it. Swap the flag for cursor or codex to install the same SKILL.md for those agents.
Pick by the job
- TDD:
test-driven-developmentmakes Claude Code write a failing test before the fix. - Web app and end to end tests:
webapp-testingdrives a local app with Playwright. Our Claude Code Playwright skill guide has more picks. - Unit tests: use a skill for your runner.
vitest-skillis in the table. For pytest, see the Python guide. - Test quality:
test-gap-auditandmutation-testingshow where tests are weak.
For a review pass after tests go green, see Claude Code skills for code review.
FAQ
What is the best Claude Code TDD skill?
test-driven-development from obra/superpowers is a common start. It sets the red, green, refactor loop as a rule for Claude Code.
Is there a skill for Jest or pytest? Yes. Our database has skills for Jest, Vitest, pytest and more. Run a scan on your repo to see the ones that match your runner.
Do testing skills run my tests? The skill tells Claude Code how to write and run tests. Claude Code runs them with your normal test command.
Do these skills work in Cursor or Codex?
Yes. Change the --agent flag to cursor or codex.
Checked 2026-10-24. Prices and policies change. Confirm on the source before you buy.
Sources
- https://skillspicker.com/pricing/
- https://code.claude.com/docs/en/skills
- https://github.com/vercel-labs/skills
More guides
- Best Claude Code skills for Next.js: 3 free picks and how to install them (2026)
- Best Claude Code skills for Python: 6 free picks and how to install them (2026)
- Claude Code frontend design skill: how to install it, plus 4 more UI picks (2026)
- Claude Code Playwright skill: 5 picks and how to install them (2026)
- Claude Code security skills: 5 free picks for security review and scans (2026)
- Claude Code skills for code review: 5 free picks with install commands (2026)