I.O. _

a self-evolving web builder

You talk. It builds. It breaks. It fixes itself. Every session makes it smarter.

I.O. is an experiment in self-evolving software. You connect to a terminal. Someone on the other side starts typing. Tell them what you want -- a website, a game, an SVG, whatever you can describe -- and they'll build it live.

When something breaks, a supervisor agent reads the error, patches the code, and commits the fix. No restart. The system got better. Every session is a branch. Every fix is a mutation. The best paths survive.

try it free
5 builds per session. no sign-up. just talk.
bring your own key unlimited
paste your Anthropic API key. stored in your browser only. never sent to our server.
self-host
clone it. run it. evolve it. your machine, your API key, full evolution engine.
your key is stored in localStorage and sent directly to Anthropic's API. it never touches our server. get a key