Mathieu Poli, Wednesday 1 July 2026The AI Extension Builder already lets you create a custom app section by describing it in plain language. Now those sections can remember and share real data. Ask for a poll, a booking list, or a guestbook, and the builder sets up the data behind it and connects it to your live app — through a new integration with Supabase. Until now, the AI Extension Builder was brilliant at one thing: turning a sentence into a working section. Describe a countdown, a mood board, a mini-game — it appears in your app, styled to fit right in. But every section it built lived entirely on the visitor's device. Nothing it produced could hold on to information or pass it between people.That was the limit. Ask for a "reader poll" and you'd get a poll that worked perfectly for one person, on one device. The votes lived in the browser. Close the app, and they were gone. Open it on another phone, and the count started at zero. A guestbook only you can read isn't a guestbook. A booking list that resets on every device isn't a booking list.The reason was always the same: those features need a place to keep their data, and a set of rules for who can read and write it. That layer — a backend — is the hard part, and it's exactly the kind of thing that used to sit among the limitations of no-code app builders. The new Supabase connector brings it inside the builder. The AI Extension Builder now builds the data layer along with the section, in the same conversation, before it writes a line of code.(If you're new to building sections this way, start with how the AI Extension Builder works — this article picks up from there. It's the same tool that recently learned to handle file uploads, now with a data layer too.)