Build your app together, even if only one of you codes.
Describe what you want in plain words. An AI agent writes it while your whole team watches, and anyone can step in to steer it. It remembers what you decided, so nobody has to explain it twice.
Rosa's Bakery
Order a birthday cake
The agent changes course and the team reviews
How a first project goes
Start a project
Begin from a template, like a landing page, a pitch deck or a small browser game, or from an empty folder.
Say what you want
Type it the way you would say it to a friend. The agent writes the files and you watch the result appear. Nothing to install.
Bring someone in
Share the project with a teammate's email. They see the same files and the same conversation, and whatever they add, the agent picks up from there.
Check before it changes
Turn on review and the agent's edits wait until someone else on the team says yes.
If someone on your team does code
They work in the same project, on the same files, with the same agent. Nothing has to be handed over or exported.
- Real files
- Everything the agent makes is an ordinary file you can open and edit in the built-in editor, or download.
- Your repository
- Import a GitHub repository and work on it here, with the agent reading the code that is already there.
- Project notes
- COFOUND.md holds your stack, your conventions and the decisions you have made. The agent reads it on every run, so nobody retypes them.
- Long jobs
- A deep run works through a bigger task in stages and takes screenshots to check its own work, while you get on with something else.
Worth knowing
- Previews show pages as they are. Apps that need their own server can be built here, but can't run in the preview yet.
- Sign-in only reads your name, email and picture. Cofound never asks for access to your repositories unless you connect GitHub to import one.
See it working first, then bring your team.
Watch the demo