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curl --request POST \
  --url https://api.nayax.com/sdk/close-transaction \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "basicInfo": {
    "requestType": 2,
    "entryMode": 1,
    "amount": 25.5,
    "currency": "EUR",
    "countryCode": "DE",
    "merchantRequestId": "CLOSE_TXN_SETTLE_001",
    "transactionId": "ORIGINAL_NAYAX_TRX_12345",
    "transactionTimeUtc": "2025-08-28T10:30:00Z"
  },
  "machineInfo": {
    "machineId": "0434334921100366"
  },
  "cardHolderInfo": {},
  "additionalInfo": {},
  "validationKey": "AUTH_VALID_KEY_XYZ"
}
'
{
  "status": {
    "verdict": "Approved",
    "code": 0,
    "statusMessage": "Payment processed successfully."
  },
  "basicInfo": {
    "amount": 25.5,
    "currency": "USD",
    "merchantRequestId": "CLOSE_TXN_SETTLE_001",
    "transactionId": "NAYAXTRANS98765",
    "transactionTimeUtc": "2026-03-18T15:00:00Z"
  },
  "paymentInfo": {
    "amount": 25.5,
    "currency": "USD",
    "nayaxTokenId": null,
    "siteId": 1,
    "providerTransactionId": "PSP_TRANS_ABC",
    "decimalPlace": 2
  }
}

Authorizations

​
Authorization
string
header
required

JWT RSA token required for authentication. The token should be included in the Authorization header as Bearer <token>. Nayax will issue tokens to the VAS, signed by a private key, and decrypt them using a public key.

Body

application/json

Request to perform a second-step operation on an existing authorized transaction.

Request body for processing a transaction (charge token, close transaction).

​
basicInfo
object

Basic transaction details.

​
machineInfo
object

Information about the machine/terminal.

​
validationKey
string | null

Validation key from the authentication flow.

Example:

"AUTH_KEY_FROM_VALIDATE"

​
cardHolderInfo
object

Cardholder details.

​
additionalInfo
object

Additional information for the transaction and receipt.

​
originalTransactionId
integer<int32>

Required for second-step transactions (e.g., refund, void). The original Nayax transaction ID.

Example:

123456

​
paymentInfo
object

Payment-related information.

Response

Success

Response body for a transaction (charge token, close transaction).

​
status
object

Transaction status.

​
basicInfo
object

Basic information about the transaction, including amount, currency, and merchant request ID.

​
paymentInfo
object

Payment-related information, including Nayax token ID if applicable.