Add a payment card
POST /v1/billing/cards
In this build: Uses a stand-in for an external service. Records a card at once. A real flow opens the payment provider's checkout and records the card when it returns.
Scope: billing.write
CLI: harebox billing card
PaymentLink
| Field | Type | Notes |
|---|---|---|
url (required) |
string |
Errors follow one format.

