Prototypes and MVPs
Something to show, the same day.
Describe the idea, watch it get built, change it by pointing or asking, and put it online at an address you can send.


What gets you there fast.
Built from what you name
Seth builds what you ask for, on every plan. Everything you name gets built and works; what you leave out is a reasonable guess.
Sample data from the first second
So you see the tool working before anyone has typed anything into it.
Plan first, when it is big
Seth asks a few quick questions first, then shows a map of the app before building anything. Worth it for a big app, or when you are not sure yet what it should have.
An address of its own
Every published app has an address like coffee-shop-ember-grain.setherion.app, free on every plan.
Every version kept
Every change to your app is kept as a version, named by what it did. Nothing you asked for is ever lost: if a change made things worse, you can go back to the version before it.
Power and Max show their price first
When Power Seth or Max Seth is chosen, a line under the box says what it costs, for a new app or for a change to this one, and which model it runs on.
Pick how much gets built.
Two choices sit in the menu behind the Build button, next to the box where you write. The top one is how the work starts. The bar under it, Agent mode, is how much gets built.
Build modes, in the documentationFrom the idea to the link.
- 1
Describe it
Open the dashboard and write what you have in mind. One clear sentence is enough to start with.
- 2
Change it by pointing
Edit above the preview, then click it. No request needed.
- 3
Put it online
It is free on every plan, takes seconds, and you can do it as often as you like.

