From hello-world to a function that passes. JavaScript and Python today — more languages on the way — written in the Monaco editor, run against visible tests and submitted to hidden ones, mentored by ARYA. Tests pass. Module shipped. Rank earned.
The Monaco editor — the same engine behind VS Code — with syntax highlighting, the shortcuts you already know, and a starter file waiting for you. JavaScript and Python today, run right in your browser, with more languages on the way. Nothing to install.
Run the visible tests as you write — watch each case turn green. Then submit against a hidden suite you never see. Progress isn't a checkbox you tick; it's a build that passes the cases you can't game.
Submit against a hidden suite you never see — your run is checked server-side and the XP awarded, so the rank means something. Stuck? ARYA, our in-house mentor, nudges you toward the idea. It never hands you the answer or spoils the test.
Write JavaScript & Python in a real Monaco editor, run the visible tests, then submit against hidden ones — checked server-side, XP awarded. Free to start — no card required.