Getting started
Quickstart
Build your first app with Setherion: describe it in a sentence, watch it being written, change it by asking, and put it online.
This is the whole of Setherion in one go: you describe an app, it gets built, you change what you want, and you publish it. It takes about five minutes, and the example here is a landing page for a coffee shop.
You need an account, which is free to open and asks for no card.
1. Describe what you want
Open the dashboard and write what you have in mind. One clear sentence is enough to start with.
Write it the way you would tell a person. Say what the thing is and who it is for, and name anything it must have. "A landing page for a coffee shop, with the menu and opening hours" says all three.
Around the box there are four things worth knowing, and you can ignore every one of them on your first app.
| Where | What it does |
|---|---|
| The six marks above the box | Website, Web App, Mobile App, Landing Page, 3D Game, SaaS. Pick one to pin what you are building, or leave it alone and Setherion decides from your words. Pressing the one you picked again unpins it. |
| Build | Build starts straight away. Plan asks a few quick questions first and shows you a map of the app before it writes anything. Under them, Agent mode chooses how much gets built: Seth, Power Seth or Max Seth. See Build modes. |
| The model button | Says Auto, which picks the best model for each request. Open it to choose one yourself. See AI models. |
| + and the microphone | Attach a picture or a document to work from, bring a design from Figma or Canva or an app made elsewhere (see Import an app), pick Skills, or say it out loud instead of typing. See Show what you mean. |
2. Choose the look
Before anything is built, Setherion answers in a sentence or two with what it is about to make, and shows the look it would build it in, as a picture of the first screen. That picture is the question: Build this one starts the build in that look, and See two more draws two others to compare. With Power Seth or Max Seth the three are drawn at once.
The look you pick is the one that gets built.
3. Watch it being built
Setherion reads your request, plans the parts, chooses the colours, writes the files, then reads its own work over. Before it shows you anything it opens the app out of sight to check that it runs, and the status line says Testing the app. If something breaks there, it is repaired first, at no cost to you.
Each step gets a row: what it is doing, what it decided, and how long it took. Thoughts, under a step, opens the reasoning behind it, and hide steps folds them all away. While the code is written, every file is named as it arrives, with one line saying what it is for, and the row ends with how many files and lines there are.
You do not have to read any of it. It is there so that nothing is hidden from you, and so you know where to point later.
A first build takes a few minutes. You can leave the page and come back to it: the app is yours from the moment it is written, and it waits for you in My Projects.
4. Your app is ready
The steps fold into one line, Built your app, with the number of files. Under the last message sits a card for the version that was just made: when it was made, its name, the photos it uses, and three buttons. Look at it with Preview, read the code with View files, or put it online with Publish this version. Publishing is free and takes seconds, so there is no harm in doing it early and often.
Every change you make later gets a card of its own, with Preview and View files. Publish this version sits on the newest one only, because publishing always puts online what the app is now. Older versions wait in History, at the top of the editor.
Under the card, I looked it over shows the app the way Setherion saw it before handing it to you, page by page, with Expand to see a page whole. Under the picture is the list of what was built into the app.
5. Look at it
The conversation stays at the left and your app fills the right. At the top of the preview:
- Preview, the code, and the stack that opens Manage: the app, how it is written, and everything around it. See Preview and Code.
- Edit lets you click a word in the preview and rewrite it. Theme changes the colours and fonts of the whole app.
- The box in the middle names the section under your eyes, and takes you to any other.
- The screen icon shows the app at phone, tablet or desktop size. Every app is built to work on all three.
6. Change it by asking
Write what you want changed in the box at the foot of the conversation, the same way you described the app.
Make the header dark and add a Reserve a table buttonThree modes sit on that box, behind the Build button (it carries the name of the agent mode you are in, like Power Seth). Build makes the change. Chat talks about the app and never touches your code, which is where to ask "what would you add to this page?" without anything happening to it. Plan asks its questions first, for a bigger change.
A change costs credits, a small number for a small change. Building and changing are what credits are for. Publishing is free. See Plans and credits for what each plan gives you.
The microphone beside the Build button lets you say the request instead of typing it, and the cube at the top left opens Connectors, to connect a service such as payments or email without leaving the app you are working on. Both are covered in Build, Chat and Plan.
7. Put it online
Press Publish, at the top right, and choose Publish to web.
Setherion offers you an address, made from the name of your app. Change it to whatever you like, as long as nobody has taken it.
Press Continue and it goes up in seconds.
That address works for anyone you send it to, and it stays up. Publishing again replaces what is online with what you have now, and nothing you have not published is visible to anyone but you.
Publishing is free, on every plan and as often as you like. A paid plan is what lets you put the app on a domain of your own, like coffeeshop.com, instead of the address above.
The same menu holds two other ways out of Setherion. Publish to app stores walks you through turning the app into one you can put in the App Store and Google Play, and checks it against what each store asks for first: see Publish to app stores. Export to GitHub and Export to GitLab put the code in a repository of yours, on a paid plan.
What to do next
When a build ends, Setherion suggests what it would do next: features to add, things to polish, and putting it online.
These are suggestions, not steps. Press one under features or Polish and it goes into the box as your next request, for you to change before sending. The ones under Go live need no code: they open the screen that does it, like Publish or Analytics.
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