const response = await fetch('https://service.pcibooking.net/api/paymentGateway', {
  headers: {
    'Authorization': 'APIKEY your-api-key'
  }
});

const data = await response.json();
console.log(data);

import requests

response = requests.get(
    'https://service.pcibooking.net/api/paymentGateway',
    headers={
        'Authorization': 'APIKEY your-api-key'
    }
)

print(response.json())

[
    {
        "Name": "The name of the payment gateway",
        "Description": "A description of the payment gateway",
        "CredentialsNames": [
            "An array of parameters required by the specific payment gateway for authentication"
        ]
    },
    {
        "Name": "The name of the payment gateway",
        "Description": "A description of the payment gateway",
        "CredentialsNames": [
            "An array of parameters required by the specific payment gateway for authentication"
        ]
    },
  {...}
]

{
    "code": -160,
    "message": "Uri not found",
    "moreInfo": "Payment gateway not found",
    "errorList": null
}