convex-domains

Set up a custom domain with your own provider

Walk the user's own registrar through pointing their domain at the Convex app: identify the target (hosting or deployment URL), create the DNS records, attach the custom domain, and rebind the auth origin if the app uses auth.

Workflow

1. Identify the target: the published site host (for *.convex.app static hosting) or the deployment's HTTP actions URL.
2. Detect an ALREADY-AUTHENTICATED DNS CLI for the user's provider and OFFER to create the records automatically: Cloudflare → flarectl dns create (note: wrangler itself doesn't manage DNS records) or the CF API via their token env; Route53 → aws route53 change-resource-record-sets; Google Cloud DNS → gcloud dns record-sets create; DigitalOcean → doctl compute domain records create; Vercel DNS → vercel dns add. Check auth read-only first (flarectl user info / aws sts get-caller-identity / doctl account get); show the exact commands and get a yes before running.
3. If no authed CLI (or the user declines), tell the user exactly which records to create at THEIR registrar: the CNAME (or A/ALIAS at the apex) plus the TXT verification record — with concrete host/value strings, not placeholders.
4. Attach the domain as a Convex custom domain (dashboard or CLI) and wait for verification; note DNS propagation can take minutes to hours. Verify records landed with dig +short.
5. If the app uses auth (passkeys/OAuth), rebind the auth origin (SITE_URL / RP_ID / ORIGIN env vars) to the new domain and re-deploy/re-publish.
6. Verify: the domain serves the app over HTTPS, including the apex → www redirect if configured.

Rules

• Never ask for or handle registrar credentials. A CLI already authenticated on the user's machine is fine — the credential stays in the tool; never install a CLI or run its login/auth flow for this, and never echo tokens.
• DNS changes on a live domain are user-visible: show the exact commands and confirm before running them; verify afterwards with dig.
• Always include the TXT verification record, not just the CNAME.
• Rebinding the domain changes the auth origin — re-publish after, or sign-in breaks.