Most build tools make you hop between a chat window, an editor, a terminal, a preview, and a deploy dashboard. Each jump is a chance to lose your train of thought. Gate 15 collapses all of that into one page: you type what you want, the agent plans and builds it inside a private workspace, and you watch the result render live a few feet from where you're typing.
It starts with a sentence
You don't need a spec or a repo to begin. "Build me a habit tracker with a weekly streak view" is enough. The agent turns that into a plan, picks the right files to create, and starts writing code in a real machine — not a sandbox toy, but a full Linux environment with a package manager, a dev server, and a network boundary of its own.
The preview is the source of truth
As soon as the dev server is up, the live preview shows your actual app — the same thing your users would see. You can click around, point at something that looks off, and ask for a change in plain English. There's no "build, then refresh, then check" loop; the preview updates as the code does.
- Click an element in the preview to tell the agent exactly what to change.
- Every dev server binds to the workspace network so the preview is reachable instantly.
- If something breaks, the error is surfaced back to the agent automatically.
Shipping is one explicit step
When it's ready, you deploy. Connect GitHub to push your code, or send the project straight to Vercel with one click. Nothing leaves your workspace until you ask it to — deploys and pushes are deliberate actions you trigger, never something that happens quietly in the background.
The whole arc — idea, plan, build, preview, ship — happens without ever switching apps. That's the point: keep the human in flow, and let the machine handle the context-switching.