Nineteen open-licensed agent skills let an AI agent test a web app the way a person would: write the test first, open a real browser, click through the flows and report what broke. They come from Vercel Labs' agent-browser, Tech Leads Club, Anthropic, Matt Pocock, Jesse Vincent and lackeyjb.
All 19 are packaged as the QA & Testing plugin in Cuttlefish.MD, HackerNoon's license-checked skills marketplace. They follow the open Agent Skills standard, so they run in Claude Code, Codex CLI and 30+ other tools, and each is indexed in HackerNoon's SKILL.md Library.
The 19 QA and testing skills
| Skill | What it does | Author |
|---|---|---|
| A browser automation CLI built for AI agents | Vercel Labs | |
| Runs agent-browser on AWS Bedrock AgentCore cloud browsers | Vercel Labs | |
| Debugs, profiles and automates the browser through the Chrome DevTools MCP server | Tech Leads Club | |
| The core agent-browser usage guide | Vercel Labs | |
| Records a demo video of a feature on a real desktop with a real cursor | Tech Leads Club | |
| Records browser traffic to reverse-engineer a site's internal API and generate a client | Vercel Labs | |
| Explores a web app systematically to find bugs and UX problems | Vercel Labs | |
| Automates Electron desktop apps such as VS Code, Slack and Figma | Vercel Labs | |
| Full browser automation with Playwright | lackeyjb | |
| Tech Leads Club's packaging of Playwright browser automation | Tech Leads Club | |
| Tests Vercel deployments behind SSO or Deployment Protection | Vercel Labs | |
| Works in Slack workspaces through browser automation | Vercel Labs | |
| Grades how completely an implementation meets its PRD, case by case | Tech Leads Club | |
| Builds features and fixes bugs test-first, red-green-refactor | Matt Pocock | |
| Writes the failing test before any implementation code | Jesse Vincent | |
| Plans and builds features in four phases: specify, design, tasks, execute | Tech Leads Club | |
| Runs agent-browser and Chrome inside Vercel Sandbox microVMs | Vercel Labs | |
| Tests local web apps with Playwright | Anthropic | |
| Builds and validates experimental WebMCP tools for a page | Vercel Labs |
Install all 19 in one command
/plugin marketplace add hackernoon/cuttlefish-agent-skills /plugin install qa-testing@cuttlefish For Codex CLI, Cursor or another agent that supports the standard, clone the repo and copy plugins/qa-testing/skills/ into your agent's skills folder, such as .agents/skills/. The agent-browser skills need Vercel's agent-browser CLI installed.
Each skill keeps its license and an ATTRIBUTION.md naming its author and source commit. Browse the full library at hackernoon.com/skills, and star Cuttlefish.MD on GitHub.
