import Gmt from 'gmt-typescript-sdk';

const client = new Gmt({
  apiKey: process.env['GMT_API_KEY'], // This is the default and can be omitted
});

const account = await client.accounts.retrieve('US');

console.log(account.available);

{
  "country_code": "US",
  "emoji": "🇺🇸",
  "display_name": {
    "ru": "США",
    "en": "United States"
  },
  "price": {
    "amount": "1.50",
    "currency_code": "USD"
  },
  "discount": {
    "base_price": "2.50",
    "percent": 5
  },
  "available": true,
  "tags": [
    "HIGH_QUALITY"
  ]
}