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Vetted in

React

87/100

High Confidence

Feb 18, 2026 · 20 questions · 23:43

If someone unplugged all the AI tomorrow,
would you still be good at your job?

Vetted answers that question. Pick a skill, answer honestly, and get a score with a confidence rating that proves it actually means something.

How it works

Three steps. No friction.

Pick a skill

React, Python, AWS, System Design — choose your topic and difficulty. Each test is generated fresh by AI, so no two are the same.

Test yourself

MCQs, code output prediction, bug fixing, and follow-up drills that adapt to your level. Timed, focused, and designed to reveal what you genuinely understand.

Know where you stand

Get an honest score you can trust — with a confidence rating that confirms it was really you. Share it or improve on it.

Built for developers who want the truth

Four reasons people take a Vetted assessment.

Find blind spots before interviews

Know exactly where you're weak before an interviewer discovers it for you.

Track real skill growth

Retake assessments over time and see your score move as you learn.

Earn a badge that means something

A verified score with a confidence rating — not a self-endorsed LinkedIn skill.

Screen candidates with data

Send standardized assessments and compare results with confidence scores.

Why trust your score?

A score is only useful if it's honest. Our confidence layer quietly ensures your result reflects what you actually know — so you can trust it, share it, and build on it. Read the full methodology.

Focus tracking

Ensures you stayed in the assessment — no second-tab temptation.

Paste detection

Distinguishes typed answers from copy-pasted ones.

Typing analysis

Recognizes natural human typing patterns vs. bulk-pasted text.

Follow-up drill-downs

Quick follow-ups based on your specific answer probe real understanding.

Timed rounds

Rapid-fire questions that test instinct, not research speed.

Sample confidence report

Typing rhythm

94%

Focus score

88%

Paste events

100%

Time patterns

91%

Answer depth

86%

High Confidence

94%

Deeper than a quiz

Questions adapt to your level. Get one right? The next one's harder. Struggle? It digs into where exactly your understanding breaks down.

⚛️

React Assessment

Question 4 of 20 · Intermediate

0:42

Monitoring

FIX CODE15 pts

This component has a bug that causes an infinite re-render loop. Find and describe the fix.

function UserProfile({ userId }) {
  const [user, setUser] = useState(null);

  useEffect(() => {
    fetch(`/api/users/${userId}`)
      .then(res => res.json())
      .then(data => setUser(data));
  }); // ← spot the bug

  return <div>{user?.name}</div>;
}

After you answer, a follow-up digs into your reasoning. This is how you discover whether you understand something — or just memorized it.