const options = {method: 'GET', headers: {'x-dolfin-api-key': '<api-key>'}};

fetch('https://api.dolfinai.co/v1/bank-details/countries', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.dolfinai.co/v1/bank-details/countries"

headers = {"x-dolfin-api-key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

using RestSharp;


var options = new RestClientOptions("https://api.dolfinai.co/v1/bank-details/countries");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("x-dolfin-api-key", "<api-key>");
var response = await client.GetAsync(request);

Console.WriteLine("{0}", response.Content);

curl --request GET \
  --url https://api.dolfinai.co/v1/bank-details/countries \
  --header 'x-dolfin-api-key: <api-key>'

[
  {
    "countryCode": "<string>",
    "countryName": "<string>",
    "defaultCurrencies": [
      "<string>"
    ]
  }
]