Install Node.js
Goal: Install the one tool your computer needs to run your app.
What is Node.js?
Node.js is what makes your app able to run on your computer. Think of it like this: your IDE (Antigravity) is your workshop where you build things, but Node.js is the engine that actually makes the app go. Without it, your app can't start. You only have to do this once ever!
Install it
First, open a fresh chat. Click the + icon at the top right of the Agent chat panel so this task starts with a clean agent (remember: one job per chat keeps the Agent focused).
Then copy and paste this into the new chat:
Check if I have Node.js installed on my computer. If I do, tell me. If I don't, install it for me. A...
The Agent will handle everything. If it asks to run something, just click the blue "Run" button that appears above the chatbox.
(Installing this can take some time). Just follow along with whatever it tells you.
The Agent confirms that Node.js is installed. That's all you need. If it says something like "Node.js is installed" or shows you a version number, you're good.