The 8 Best Claude Code Skills for Testing
Ranked by quality, maintenance and a safety scan of every file · Updated
Skills that make Claude Code write, run and fix tests: TDD loops, end-to-end browser tests and test review. We compared 8 Claude Code Skills for Testing that pass our quality bar, 100% of which came up clean on our safety scan; these are the top 8, no more than three from any one repository.
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agent-qa-authoring
by sickn33
Create, edit, validate, and run Agent QA tests, suites, and hooks through MCP or CLI while preserving canonical IDs and schema contracts.
Quality 92/100Safety scan clean★ 46,875Updated 6 days agoWhy it is here: updated 6 days ago; clean safety scan; 46,875 GitHub stars.
npx skills add sickn33/agentic-awesome-skills --skill agent-qa-authoring - 2
android-ui-journey-testing
by sickn33
XML-specified Android UI journey testing, interactive step execution, assertion verification, and JSON outcome reporting.
Quality 98/100Safety scan clean★ 46,875Updated 6 days agoWhy it is here: highest quality score in this list; updated 6 days ago; clean safety scan.
npx skills add sickn33/agentic-awesome-skills --skill android-ui-journey-testing - 3
apk-redteam-pipeline
by sickn33
End-to-end Android APK red-team pipeline
Quality 93/100Safety scan clean★ 46,875Updated 6 days agoWhy it is here: updated 6 days ago; clean safety scan; 46,875 GitHub stars.
npx skills add sickn33/agentic-awesome-skills --skill apk-redteam-pipeline - 4
testing-handbook-generator
by trailofbits
Generates Claude Code skills from the Trail of Bits Testing Handbook (appsec.guide), analyzing handbook pages and emitting SKILL.md files with the structure each skill type requires
Quality 96/100Safety scan clean★ 7,225Updated 6 days agoWhy it is here: updated 6 days ago; clean safety scan; 7,225 GitHub stars.
npx skills add trailofbits/skills --skill testing-handbook-generator - 5
tdd
by wesammustafa
Development practices and TDD workflow to follow before starting a feature
Quality 80/100Safety scan clean★ 3,043Updated 2026-07-28Why it is here: clean safety scan; 3,043 GitHub stars.
npx skills add wesammustafa/Claude-Code-Everything-You-Need-to-Know - 6
skillshare-codebase-audit
by runkids
Cross-validate CLI flags, docs, tests, and targets for consistency across the codebase. Use this skill whenever the user asks to: audit the codebase, check for consistency issues, find undocumented flags, verify test coverage, validate targets.yaml, check handler split conventions, or verify oplog i…
Quality 90/100Safety scan clean★ 2,689Updated 6 days agoWhy it is here: updated 6 days ago; clean safety scan; 2,689 GitHub stars.
npx skills add runkids/skillshare --skill skillshare-codebase-audit - 7
skillshare-release
by runkids
End-to-end release workflow for skillshare. Runs tests, generates changelog (via /changelog), optionally writes local RELEASE_NOTES, updates version numbers, commits, and drafts announcements
Quality 90/100Safety scan clean★ 2,689Updated 6 days agoWhy it is here: updated 6 days ago; clean safety scan; 2,689 GitHub stars.
npx skills add runkids/skillshare --skill skillshare-release - 8
analyzing-test-coverage
by jeremylongshore
'Analyze code coverage metrics and identify untested code paths.
Quality 85/100Not yet scanned★ 2,785Updated 6 days agoWhy it is here: updated 6 days ago; 2,785 GitHub stars.
npx skills add jeremylongshore/tons-of-skills-marketplace --skill analyzing-test-coverage
Side by side
| # | Name | Quality | Safety | Stars | Updated |
|---|---|---|---|---|---|
| 1 | agent-qa-authoring | 92 | Clean | 46,875 | 6 days ago |
| 2 | android-ui-journey-testing | 98 | Clean | 46,875 | 6 days ago |
| 3 | apk-redteam-pipeline | 93 | Clean | 46,875 | 6 days ago |
| 4 | testing-handbook-generator | 96 | Clean | 7,225 | 6 days ago |
| 5 | tdd | 80 | Clean | 3,043 | 2026-07-28 |
| 6 | skillshare-codebase-audit | 90 | Clean | 2,689 | 6 days ago |
| 7 | skillshare-release | 90 | Clean | 2,689 | 6 days ago |
| 8 | analyzing-test-coverage | 85 | Pending | 2,785 | 6 days ago |
How we rank
Only skills we have read make the list: the file itself was fetched, it has a real description, it scores at least 55 of 100 on quality, its source still exists, its repository has at least 20 GitHub stars, and our safety scan found nothing high-risk. The order then follows adoption (GitHub stars, on a log scale), how squarely it fits this topic, and its quality score (how substantial and well structured the file is and how recently it changed), moved up for a clean safety scan and for real installs through the SkillAgent MCP server, and down for safety notes. At most three come from any one repository, and tools sold on evading bot detection are never listed. We do not rank by install counts reported by a command-line tool: they are easy to inflate, and our research found repositories with no stars claiming hundreds of thousands of installs. The list is recomputed on every visit.
Questions
What is the best Claude Code Skill for Testing?
agent-qa-authoring by sickn33 ranks first: updated 6 days ago, clean safety scan, 46,875 GitHub stars. The full ranking above lists 8 alternatives with their trade-offs.
How do I install one?
Each entry shows a one-line command. `npx skills add` installs a skill for Claude Code, Cursor, Codex, Gemini CLI and other agents that read skill files.
Are these safe to install?
Every file is scanned for instructions that work against you: hidden text, data sent to outside servers, disabled approval prompts, leaked keys. Skills with a warning are never listed here, and 100% of the 8 we compared for this guide came up clean. Read a skill before installing it all the same: it runs with your permissions.