const options = {method: 'GET'};

fetch('https://api.dolfinai.co/currencies/available', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

[
  {
    "code": "<string>",
    "name": "<string>",
    "symbol": "<string>",
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "decimalPlaces": 123
  }
]