const response = await fetch(
  "https://api.splashpay.co.tz/api/v1/merchant-balance",
  {
    method: "GET",
    headers: {
      "X-API-KEY": process.env.SPLASHPAY_KEY,
      "X-API-SECRET": process.env.SPLASHPAY_SECRET,
    },
  }
);

const data = await response.json();

import requests

response = requests.get(
    "https://api.splashpay.co.tz/api/v1/merchant-balance",
    headers={
        "X-API-KEY": "pk_live_xxxxxxxxx",
        "X-API-SECRET": "sk_live_xxxxxxxxx",
    },
)

print(response.json())

$client = new \GuzzleHttp\Client();

$response = $client->get(
    'https://api.splashpay.co.tz/api/v1/merchant-balance',
    [
        'headers' => [
            'X-API-KEY' => 'pk_live_xxxxxxxxx',
            'X-API-SECRET' => 'sk_live_xxxxxxxxx',
        ],
    ]
);

echo $response->getBody();