Web service domains

Default subdomain

Each service is reachable at:

https://<your-subdomain>.runsite.app

You pick the subdomain when you create the service. If the name is taken, Runsite appends a short numeric suffix (e.g. my-api-2.runsite.app).

A few subdomains are reserved by the platform and can’t be used: docs, api, app, auth, status.

You can rename the subdomain later in Settings → Domain.

Custom domains

Attach as many of your own domains as you like.

1. Open Settings → Custom Domains and click Add Domain.
2. Enter the domain (e.g. app.example.com). Runsite shows you the DNS records to add at your registrar.
3. The domain appears as Pending. Click Verify once DNS has propagated.
4. Once verified, a TLS certificate is issued automatically. The status flips to Verified with a lock icon.

You can delete a custom domain at any time. For the full DNS walkthrough see Custom Domains.