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OpenFinance can build apps as well as trade. Describe what you want in the chat, and Build mode writes the code, runs it and shows you a live preview. When you like it, ship it to your own GitHub and Vercel. You can start in one of two ways.

From a template

Pick a ready-made tool or site in Mainframe and deploy it. Fastest way to something that works.

From a prompt

Describe exactly what you want in Build mode and shape it by chatting.

Build from a prompt

Templates have their own guide in Mainframe. Starting from a prompt works like this:
1

Switch to Build

Open openfinance.tech/chat and choose Build in the toggle at the top.
2

Describe the app

Be specific about what it shows and what it does. For example:
3

Watch it build

A checklist shows each stage. When the build is done, the preview opens next to the chat.
4

Ask for changes

Keep chatting: “add a chart under each price”, “make the table sortable”. Each change updates the preview.
5

Ship it

Connect GitHub and Vercel once, then click Push or Deploy, or simply ask “Deploy this app to Vercel.” A deploy gives the app a permanent address on your own Vercel account.
Chat page with the Build toggle selected and the message box reading Describe what you want to build or fix

Build selected in the top bar of the chat

Next

Build mode

The preview, the Build panel and shipping in detail.

Mainframe

Templates you can deploy and change.

Connectors

Connect GitHub and Vercel before you ship.