DEVELOPER ASSESSMENT FOR THE AI ERA

Measure how developers think■

AI writes the code now. The question is who knows what to build, how to direct AI, and when AI is wrong. Cagrex measures that.

START ASSESSING ■I'M A DEVELOPER →

CAGREX

BUILDbooking_api

28:45

SUBMIT ■

EXPLORER

README.md

package.json

index.js

rooms.js

EDITORPREVIEWSWAGGER

READ-ONLY

1 const express = require('express');

2 const app = express();

3 app.use(express.json());

5 let bookings = [];

7 app.post('/bookings', (req, res) => {

8 // conflict detection

› TERMINAL

$ npm start

3,420

YOU ──────────

Create a booking API with conflict detection

AI ───────────

Setting up Express with booking endpoints...

src/index.jsAPPLY

BUILD MODE

UTF-8JAVASCRIPT

01 — HOW IT WORKS

Four phases. One assessment.

Each phase isolates a different skill. Candidates can't hide behind AI or behind manual coding alone.

01LOGIC

No AI. Pure problem solving. Write code yourself. We measure how you think under constraints.

AI OFFEDITOR EDITABLE

02BUILD

AI enabled. Editor read-only. Build entirely through prompts. We measure how you communicate with AI.

AI ONEDITOR READ-ONLY

03DEBUG

AI enabled. Editor editable. Find and fix planted bugs. We measure how you judge AI output.

AI ONEDITOR EDITABLE

04REVIEW

No AI. Read-only code. Answer review questions. We measure your domain understanding.

AI OFFEDITOR READ-ONLY

02 — WHAT WE MEASURE

Four dimensions of developer skill.

Every other platform measures one thing: can you write code. We measure four things that actually predict performance in the AI era.

LOGICAL THINKING88

Can they solve problems without AI? Do they think structurally, handle edge cases, and write clean logic?

DOMAIN UNDERSTANDING76

Do they know the tools, frameworks, and patterns? Do they mention concepts before being prompted?

PROMPT ENGINEERING85

Can they communicate intent to AI? Do they iterate with precision or throw 'fix this' into the void?

AI JUDGMENT72

Can they identify when AI is wrong? Do they diagnose bugs specifically or blindly trust the output?

04 — FOR COMPANIES

Stop guessing. Start measuring.

Create an assessment in minutes. Pick challenges from the library. Send one link to all candidates. Get AI-analyzed scoring reports.

CREATE

Pick challenges for each phase. Set time limits. Get an invite link.

ASSESS

Candidates work in a real sandbox. Every interaction is logged.

ANALYZE

AI scores across four dimensions. Evidence-backed signals, not vibes.

03 — FOR DEVELOPERS

Not just an assessment tool.

Create an account. Practice challenges. Track your skills across four dimensions. Know where you're strong and where you need work.

PRACTICE

Browse challenges by type. Logic, AI Build, Debug, Code Review. Practice independently with scores visible to you.

TRACK

Four-dimension skill profile built from your practice sessions. See your strongest and weakest areas.

PROVE

When a company sends you an assessment, your account links to the session. Build your track record over time.

The future belongs to thinkers.

AI will replace skills. It will never replace brains.

START ASSESSING ■PRACTICE FOR FREE →

CAGREX

STRUCTURE OVER CHAOS ■