Retrieves the saved card on file for a contact, or null when none is saved. One card is supported per contact.
AuthorizationRequiredBearer <token>API key as Bearer token
In: header
idRequiredstringContact id, discoverable via list_contacts
Refund Invoice Payment
Issues a partial or full refund against a Stripe-Connect payment on a paid invoice. Platform fees are non-refundable: the host must have enough connected-account balance to absorb the fee hit when refunding the gross amount. Idempotent on caller-supplied `idempotencyKey` — replays return the existing refund without contacting Stripe.
Attach a saved payment method
Persists the card from a confirmed SetupIntent against the contact. The SetupIntent is re-verified server-side (status + scope) before the card is saved. Replaces any existing card on file for the contact.