Returns the data needed to transact on a connected user's credit cards: expiry date, card brand name and card art.

Synchronous — one request, one response, nothing to poll and no callback to receive. Naming cards in the body is optional; omit creditCardIds to receive every open card the user holds. An empty array is rejected.

Only open cards are returned. A closed account is excluded rather than returned for the caller to filter, unless it was named explicitly — in which case it comes back with CREDIT_CARD_ACCOUNT_CLOSED. Expect the entry count to be lower than the Debt Profile's card count.

Read object presence, not status: a card can be SUCCESS and still carry no expirationDate.