curl --request GET \
  --url https://app.closerx.ai/api/list-cards/ \
  --header 'api_key: <api-key>'

{
  "success": true,
  "errors": [],
  "response": [
    {
      "display_brand": "visa",
      "exp_month": 9,
      "exp_year": 2032,
      "last4": "99999",
      "customer": "z45j888B",
      "id": "88GE",
      "default": true
    }
  ],
  "message": "Cards List"
}