Your own vendor subscription

Sign a CLI in with your own account and it runs on your subscription instead of your credit here.

The sign-in

Settings, then AI accounts, then start the sign-in.

The CLI prints its URL
you open it
you paste the code back

Nothing is intercepted or replayed. The path leaves the CLI and comes back to it, because sign-in mirrors each CLI's own flow: it is that CLI doing the signing in.

Once signed in

The credential: Stored in a volume that belongs to your account alone.
The bill: That vendor bills you on your subscription. Nothing reaches your credit ledger.
The limits: Your subscription's own limits apply unchanged. This service does not raise them, extend them, or reroute a request that has hit one.

What does not reach here

The automatic fallback described under CLIs. It covers models on this service's own provider keys and nothing else.
Spend limits and the budget governor, because there is no spend of ours to cap.