function getCryptoData() { var url = "
https://rest.coinapi.io/v1/exchangerate/BTC/USD"; var options 
= { 'method' : 'get', 'headers': {'X-CoinAPI-Key': 
'YOUR_COINAPI_KEY'} }; 
var response = UrlFetchApp.fetch(url, 
options); var data = JSON.parse(response.getContentText()); 
return data.rate; }