This helps you write test cases that cover normal flows, edge cases, and exceptions without starting from scratch. You feed it project context like scope, environment, and constraints, and it generates executable test cases in Markdown by default, though you can request Excel, CSV, or JSON if that fits your workflow better. The prompts push you to be risk-driven and flag what's missing rather than pretending everything is known upfront. One caveat: it really needs meaningful context to be useful. If you throw vague requirements at it, you'll get vague test cases back. Best used when you have a decent grip on what you're testing but want structured coverage you can actually hand off or execute.
npx skills add https://github.com/naodeng/awesome-qa-skills --skill test-case-writing