I wanted to build something calm on the internet. I made a room. Only one person can be inside at a time. When you leave, everything disappears.

You type something, something acknowledges you, and then it’s gone. No history.

The internet is public. Everyone can see everything, and it keeps everything. Every post, every comment. Most AI tools send your words to a server somewhere and might use them for training. I wanted to make the opposite. A small corner that forgets, where only one person fits.

You can try it at isanyonehere.xyz.

How it works

There’s an AI inside the room. It runs in your browser, not on a server. Your words stay on your computer.

When you type something, the AI doesn’t reply with text. It replies with a visual pulse. The color and intensity change based on what you wrote.

The model converts your words into numbers, a vector with 384 dimensions. Like a fingerprint of what you said. I split this into three parts, and each controls something different.

Intensity. How strong the pulse feels. Exclamation marks, question marks, and capital letters make the pulse stronger. Longer messages add some weight too. The numbers themselves also matter: if they lean heavily positive or negative, the pulse intensifies.

Hue. The first part of the numbers decides the color. I mix them in a way that spreads across the color wheel. So “I’m excited” and “I’m worried” end up different colors.

Saturation and lightness. The middle part controls how rich the color is. If the numbers vary a lot, the color is more vivid. The last part controls brightness.

The room doesn’t answer with words. It just shows you something back.

Privacy

The model is small enough to run inside your browser. It understands meaning but can’t generate text.

Your words go into the model, and then they are gone. When you close the tab, the memory clears. There is no database.

The only thing that goes over the internet is a heartbeat. A small signal that says “I’m still here.” This is how the room knows when you leave, so the next person can come in.

I keep thinking about this question: when you are alone with an AI, really alone, no traces, what would you do?

I don’t think this is useful. But it is beautiful.