Codex Relay Access

Recommended flow

Obtain the relay base URL from your operator.
Configure your client to target the relay instead of the original upstream host.
Use the API key issued for your account.
Validate a minimal request before moving production traffic.

Operational advice

Prefer environment-based configuration so domain updates are easy to rotate.
Keep a small smoke test request for rollout validation.
If a request fails after a platform update, compare relay host, headers, and model name first.