200+ developers tested
Vibe Coder or Engineer?
AI writes code now, not humans.
Engineers can explain most of the code they shipped to production, vibe coders can't. Can you?
10 minutes. 10 questions. Your code.
How it works
1. Push Your Code
Any public or private project. Deleted right after.
2. AI Generates Questions
10 deep questions based on YOUR code
3. Live AI Screening
10-minute conversation. No tricks.
4. Get your verdict
And find out what to improve next.
What it looks like
Like defending your PR to a senior who read every line.
Your FormField.tsx uses compound components with Context. Why this over prop drilling, and how does it connect to useFormValidation.ts?
What does useEffect do in React?
Deep understanding of compound components in FormField.tsx and context-based state sharing. Correctly linked it to the validation hook and re-render trade-offs.
What's behind this
This Challenge lets you prove your skills for the price of a coffee. It's powered by ProofCode, the platform that fixes broken technical interviews.
For Engineers
- Let your code speak for itself, not whiteboard tricks
- Deep technical discussions with AI & Recruiters, not a pass/fail exam
For the companies hiring you
- Hours saved on screening, so you both move faster
- Better signal on every candidate, fewer costly mis-hires
Who made this
Frequently asked questions
What happens to my code?
Your code is analyzed to generate questions, then permanently deleted.
How long does it take?
10 minutes. 10 questions about your code. Results come within a few hours.
My project is small. Can I still take it?
Yes. Our AI adapts to what you submit. A few hundred lines can reveal as much as a full app.
Can I use the Challenge to game a ProofCode interview?
No. The Challenge covers a tiny fraction of what our AI can generate. In a real interview, questions go deeper with follow-ups based on your answers, and recruiters choose which topics to focus on.
How is the Challenge different from a ProofCode interview?
The Challenge is a simplified version of our platform. ProofCode adds deeper analysis, anti-cheat layers, and lets recruiters tailor the interview to the role. It's built for hiring, not just self-assessment.
Ready to find out?
Refund if it breaks. No refund if your ego does.