To authenticate REST API 2.0 requests, the merchant includes an API key in the request header:

x-api-key: <API key>

Example POST /payments Request

POST  /payment-api/payments HTTPS/1.1 
Host: api.nuvei.com
Content-Type: application/json 
x-api-key: <API key>

{
  "processingEntityId": "<your processingEntityId>",
  "transactionType": "Sale",
  "amount": 60,
  "currency": "EUR",
...
}

To view, generate, and manage API keys, the merchant can use the Control Panel REST 2.0 API Credentials report.