Looking at the source material, I can see this is a practice interview tool that generates technical questions based on your resume and target role. You paste in your resume, specify what position you're interviewing for, and it fires questions at you one at a time, waiting for your response before moving on. The implementation is straightforward: it's built as a Claude skill that maintains conversation context to simulate a real interview flow. Honestly, this is the kind of thing you'd use the night before an interview when you realize you should probably practice talking about that project from two jobs ago. It won't replace mock interviews with humans, but it's better than staring at your resume alone.
npx skills add https://github.com/alirezarezvani/claude-skills --skill grill-me