10 picks · ranked by GitHub stars
Best agent skills for testing and QA
The best agent skills for testing and QA are Systematic Debugging, TDD and Skill Creator; Systematic Debugging leads with 306,774 GitHub stars.
The list covers 153 agent skills in the appsgit catalog, one entry per repository.
Updated · data from GitHub, refreshed daily
Top picks
- Rank 1:
Systematic Debugging
obra/superpowers
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
Active · last commit Oct 21, 2026
Testing & QAShellStands out for the most GitHub stars. Systematic Debugging has 306,774 GitHub stars, has 306,946 installs on skills.sh and runs without an API key.
- Rank 2:
TDD
mattpocock/skills
Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.
Active · last commit Oct 27, 2026
Testing & QAShellStands out for the most installs on skills.sh (1,143,960). TDD has 305,150 GitHub stars, has 1,143,960 installs on skills.sh and runs without an API key.
- Rank 3:
Skill Creator
anthropics/skills
Create new skills, modify and improve existing skills, and measure skill performance.
Maintained · last commit Oct 9, 2026
OfficialTesting & QAPythonStands out for being published by the vendor itself. Skill Creator has 184,344 GitHub stars, is published by the vendor itself, has 414,676 installs on skills.sh and runs without an API key.
At a glance
Agent skills for testing and QA compared
Ranked by GitHub stars (installs on skills.sh break ties), at most one entry per repository so one project cannot fill the list.
| App | Stands out for | License | GitHub stars | Last commit | API key |
|---|---|---|---|---|---|
| Systematic Debugging | the most GitHub stars | MIT | 306,774 | Oct 21, 2026 | Not needed |
| TDD | the most installs on skills.sh (1,143,960) | MIT | 305,150 | Oct 27, 2026 | Not needed |
| Skill Creator | being published by the vendor itself | Apache-2.0 | 184,344 | Oct 9, 2026 | Not needed |
| Next Cache Components Optimizer | running without an API key | MIT | 143,173 | Oct 27, 2026 | Not needed |
| Browser Use | a permissive MIT license | MIT | 119,344 | Oct 26, 2026 | Needed |
| Surgical Patch | – | Apache-2.0 | 115,623 | Oct 25, 2026 | Not needed |
| Debugging And Error Recovery | – | MIT | 111,265 | Oct 13, 2026 | Not needed |
| Orca Per Workspace Env | – | MIT | 108,421 | Oct 28, 2026 | Not needed |
| Agent Browser | – | MIT | 108,120 | Oct 28, 2026 | Not needed |
| Mode Creator | – | Apache-2.0 | 103,816 | Oct 28, 2026 | Not needed |
Full ranking
All 10 picks, ranked
Ranked by GitHub stars (installs on skills.sh break ties), at most one entry per repository so one project cannot fill the list.
- 1
Systematic Debuggingobra/superpowers
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
ShellStands out for the most GitHub stars. Systematic Debugging has 306,774 GitHub stars, has 306,946 installs on skills.sh and runs without an API key.
- 2
TDDmattpocock/skills
Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.
ShellStands out for the most installs on skills.sh (1,143,960). TDD has 305,150 GitHub stars, has 1,143,960 installs on skills.sh and runs without an API key.
- 3
Skill Creatoranthropics/skills
Create new skills, modify and improve existing skills, and measure skill performance.
PythonStands out for being published by the vendor itself. Skill Creator has 184,344 GitHub stars, is published by the vendor itself, has 414,676 installs on skills.sh and runs without an API key.
- 4
Next Cache Components Optimizervercel/next.js
Optimize the meaningful UI available immediately from a Next.js route on an initial load (hard navigation) or named client-side navigation (soft navigation).
JavaScriptStands out for running without an API key. Next Cache Components Optimizer has 143,173 GitHub stars, is published by the vendor itself, has 4 installs on skills.sh and runs without an API key.
- 5
Browser Usebrowser-use/browser-use
Direct browser control via CDP for web interaction: automation, scraping, testing, screenshots, and site/app work.
PythonStands out for a permissive MIT license. Browser Use has 119,344 GitHub stars, is published by the vendor itself, has 98,125 installs on skills.sh and needs an API key or token.
- 6
Surgical PatchJuliusBrussee/caveman
Fix bugs and small behavior changes at the narrowest responsible layer.
GoSurgical Patch has 115,623 GitHub stars, has 103,769 installs on skills.sh and runs without an API key.
- 7
Debugging And Error Recoveryaddyosmani/agent-skills
Guides systematic root-cause debugging. Use when tests fail, builds break, something that worked yesterday broke, behavior doesn't match expectations, or you encounter any unexpected error.
JavaScriptDebugging And Error Recovery has 111,265 GitHub stars, has 62,145 installs on skills.sh and runs without an API key.
- 8
Orca Per Workspace Envstablyai/orca
Set up, review, debug, or validate an Orca per-workspace environment recipe: the on-demand, disposable runtime (cloud sandbox, VM, SSH host, or local container) Orca creates fresh for each workspace.
TypeScriptOrca Per Workspace Env has 108,421 GitHub stars, is published by the vendor itself and runs without an API key.
- 9
Agent Browserpaperclipai/paperclip
Drive a real browser to inspect or interact with a web page or app — navigate, take screenshots, read console and network, fill simple forms — for verification tasks, not unattended automation.
TypeScriptAgent Browser has 108,120 GitHub stars and runs without an API key.
- 10
Mode Creatorthedotmack/claude-mem
Interactively create, install, activate, and verify custom claude-mem modes, including domain-specific observation types, concept tags, optional Telegram alerts, bot setup, worker restart, and…
TypeScriptMode Creator has 103,816 GitHub stars and runs without an API key.
Do these agent skills need an API key?
1 of the 10 picks need an API key or token, for example Browser Use; 9 run without one. Each page on appsgit lists the environment variables a agent skill expects.
Which coding agents work with these skills?
Claude Code (all), Codex (8 of 10), Cursor (7 of 10) and OpenCode (7 of 10). The client list comes from each project's published compatibility data; appsgit does not guess it.
Are any of these agent skills official?
Yes: Skill Creator, Next Cache Components Optimizer and Browser Use and 1 more are published by the vendor themselves.
How is this list ranked?
Ranked by GitHub stars (installs on skills.sh break ties), at most one entry per repository so one project cannot fill the list.
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