Best skills for Testing & Review (2026)
agent-browser is the best skill for Testing & Review — 187 GitHub stars, 404k installs. Strong alternatives: agent-browser and improve-codebase-architecture.
913 curated skills for builders in Testing & Review, ranked by real adoption (installs, then GitHub stars). Every pick links to install commands and trust signals.
Curated by Skillselion · ranked by adoption from the skills.sh registry & GitHub.
The top 10 skills for testing & review
| # | Skill | Author | Repo | For | Stars | Installs |
|---|---|---|---|---|---|---|
| 1 |  agent-browserDrive the agent-browser CLI to open local or remote pages, click, fill forms, screenshot, and sanity-check dev servers after npm run dev. | vercel-labs | vercel-labs/vercel-plugin | Claude Code | 187 | 404k |
| 2 | agent-browser Drive real browser sessions from the agent CLI to test flows, fill forms, capture screenshots, and extract page data via snapshot refs. | vercel-labs | vercel-labs/open-agents | Claude Code | 0 | 404k |
| 3 |  improve-codebase-architectureGuide an agent through safely merging shallow modules into deeper units using seams, ports, and adapters instead of risky big-bang refactors. | mattpocock | mattpocock/skills | Claude Code | 121k | 257k |
| 4 | tdd Run a red-green-refactor loop while building features or fixing bugs so tests describe behavior through public APIs instead of brittle implementation checks. | mattpocock | mattpocock/skills | Claude Code | 121k | 243k |
| 5 |  use-my-browserUse the user live browser session for logged-in flows, DevTools context, and rendered DOM inspection. | xixu-me | xixu-me/skills | Claude Code | 61 | 212k |
| 6 | zoom-out When entering unfamiliar code, invoke to get a higher-level map of modules, callers, and domain glossary terms instead of line-by-line guessing. | mattpocock | mattpocock/skills | Claude Code | 121k | 207k |
| 7 |  caveman-reviewProduce terse, line-scoped PR review comments with optional severity tags instead of verbose feedback. | juliusbrussee | juliusbrussee/caveman | Claude Code | 70k | 156k |
| 8 |  requesting-code-reviewDispatch a subagent with a senior code-reviewer prompt, your plan, and a git SHA range so finished work is checked before you merge or stack more changes. | obra | obra/superpowers | Claude Code | 221k | 128k |
| 9 | test-driven-development Make your coding agent follow strict test-first red-green-refactor before any feature, bugfix, or refactor production code. | obra | obra/superpowers | Claude Code | 221k | 127k |
| 10 | verification-before-completion Install this when you want your coding agent to prove tests, lint, and builds actually pass before it says a task is done or opens a PR. | obra | obra/superpowers | Claude Code | 221k | 108k |
Common questions
What is the best skill for Testing & Review?
agent-browser is the top-ranked skill for Testing & Review, with 404k installs and 187 GitHub stars — Drive the agent-browser CLI to open local or remote pages, click, fill forms, screenshot, and sanity-check dev servers after npm run dev..
What are the best alternatives to agent-browser for testing & review?
Strong alternatives ranked just behind agent-browser are agent-browser and improve-codebase-architecture. All 913 options are compared in the table above, ranked by real adoption.
How do I install agent-browser?
Run: npx skills add https://github.com/vercel-labs/vercel-plugin --skill agent-browser
How are these skills ranked?
By real adoption — installs first, then GitHub stars — across the 913 curated skills in the Testing & Review category. Data from the skills.sh registry and GitHub.
More in Testing & Review
See every tool on the Testing & Review hub, browse all skills, or see every best-of shortlist.