const { result, error } = await unprice.paymentMethods.list({
  customerId: "cus_1234567890",
  provider: "stripe"
});

if (error) {
  // handle potential network or bad request error
  // a link to our docs will be in the `error.docs` field
  console.error(error.message);
  return;
}

console.log(result);

[
  {
    "id": "pm_1234567890",
    "name": "John Doe",
    "last4": "4242",
    "expMonth": 12,
    "expYear": 2024,
    "brand": "visa"
  }
]