curl --request POST \
  --url https://api.example.com/v1/sdk/payment-intents \
  --header 'Content-Type: application/json' \
  --header 'idempotency-key: <idempotency-key>' \
  --data '
{
  "customerRef": "<string>",
  "productRef": "<string>",
  "planRef": "<string>",
  "pricingTier": "<string>",
  "purpose": "product",
  "amount": 5000050,
  "currency": "<string>",
  "description": "<string>"
}
'

{
  "processorPaymentId": "pi_1a2b3c4d5e6f7g8h",
  "planRef": "pln_2b3c4d5e6f7g",
  "customerRef": "cus_3c4d5e6f7g8h",
  "amount": 4999,
  "originalAmount": 4999,
  "currency": "usd",
  "exchangeRate": 1,
  "status": "requires_payment_method",
  "clientSecret": "pi_1a2b3c4d5e6f7g8h_secret_AbCdEf123456",
  "publishableKey": "pk_test_...",
  "expiresAt": "2025-10-19T10:30:00.000Z",
  "createdAt": "2025-10-18T10:30:00.000Z"
}