> ## Documentation Index
> Fetch the complete documentation index at: https://docs.convonexai.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Domains & URLs

> Where your app lives on the internet — the preview URL while you build, and the permanent production URL when you publish.

Every project gets two URLs, and it's worth knowing which is which.

## The preview URL

While you build, your app is live at a unique **preview** subdomain (you can
open it from the preview panel's "open in new tab" button). It reflects the
workspace in real time — including changes the agent is mid-way through — and it
[sleeps](/building/preview) when you're away. Treat it as yours to poke at, not
as something to share with customers.

## The production URL

[Publishing](/shipping/publish) gives your app a permanent production URL on its
own subdomain (the shape is `your-project.app.convonexai.tech`), served over
HTTPS with a valid certificate — nothing to configure. The production URL:

* stays up independently of your preview and your workspace,
* only changes content when you publish again,
* is safe to put in front of real users.

An unclaimed or removed hostname returns a plain 404 — one project's traffic can
never fall through to another project's app.

## Custom domains

Serving your app from a domain you own (like `app.yourcompany.com`) is on the
roadmap but **not self-service yet** — if it's important for a launch, contact
support. (Custom *email sending* domains are different, and already work — see
[Email](/capabilities/email).)