Custom domains

Every app gets a canonical <slug>.cloudrizz.app URL for free. Attach your own domain with the add_domain tool — it returns the exact DNS records to add, and SSL is issued automatically once they resolve.

Adding a domain

Ask your assistant to add the domain, or call add_domain directly. It returns the precise DNS record(s) for the option you pick — copy them into your DNS provider. Certificates are provisioned for you; there's nothing to upload.

If your DNS is on Cloudflare, set the new record to DNS only (grey cloud) — add_domain notes this in the instructions it returns.

The options

1 · www (recommended). Works on any DNS provider:

www.example.com   CNAME   <slug>.cloudrizz.app

2 · Apex on Cloudflare DNS. If your DNS is hosted on Cloudflare, CNAME flattening allows an apex CNAME:

example.com   CNAME   <slug>.cloudrizz.app

3 · Apex on any provider. For apex domains on providers without flattening, point the apex at a free redirector to your www host (which serves the app):

example.com   A      65.21.184.101
example.com   AAAA   2a01:4f9:c012:a304::1
www.example.com   CNAME   <slug>.cloudrizz.app

The apex 301-redirects to www (path preserved); add_domain returns these exact records for your domain.

4 · Subdomain. Any subdomain you like:

app.example.com   CNAME   <slug>.cloudrizz.app

After it resolves

  • SSL is issued automatically — no action needed.
  • Your app is reachable on the custom domain alongside its .cloudrizz.app URL.
  • The custom domain becomes the canonical origin for SEO (canonical tags, sitemap URLs).

The number of custom domains you can attach depends on your plan — see Limits & quotas.