Set a card as the client's default (pre-selected on charge)
X-Api-Key<token>
Business API key, e.g. vuz_ab12cdef... Created via Settings → Integrations → API Keys. Unlike partner keys, a public API key's STRING does not encode its environment — isolation instead comes from a completely separate sandbox database: a key minted on the Sandbox server (above) only ever reads/writes sandbox data and can never see or affect production, regardless of what the key looks like.
In: header
Path Parameters
clientId*string
Client ID
tokenId*string
ClientPaymentToken ID
Response Body
application/json
curl -X POST "https://example.com/clients/string/cards/string/default"{ "success": true}