curl --request GET \
  --url https://api.qint.ch/api/v1/merchant/balances/conversions \
  --cookie qint_session=

const options = {method: 'GET', headers: {cookie: 'qint_session='}};

fetch('https://api.qint.ch/api/v1/merchant/balances/conversions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.qint.ch/api/v1/merchant/balances/conversions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_COOKIE => "qint_session=",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

import requests

url = "https://api.qint.ch/api/v1/merchant/balances/conversions"

headers = {"cookie": "qint_session="}

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

print(response.text)

[
  {
    "id": "cv_4k8m2p9q7w1x",
    "fromCurrency": "CHF",
    "fromAmount": 2400,
    "toCurrency": "CHF",
    "toAmount": 2256.48,
    "rate": 0.9402,
    "rateSource": "<string>",
    "rateAt": "2023-11-07T05:31:56Z",
    "idempotencyKey": "<string>",
    "createdAt": "2023-11-07T05:31:56Z",
    "requestedByUserId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
]

{
  "type": "https://tools.ietf.org/html/rfc9110#section-15.5.1",
  "title": "An error occurred while processing your request.",
  "status": 400,
  "detail": "currency must be one of: CHF, EUR, USD, GBP.",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-00"
}