BTCFoxBitCompra.js

function BTCFoxBitCompra(currency){
  if (currency == null) {
    currency = "brl";
  }
  var url = "https://api.blinktrade.com/api/v1/BRL/orderbook...";
  setInterval(function(){
    var response = UrlFetchApp.fetch(url).getResponseCode();
    if (response = 200) {
      var btcbasedata = UrlFetchApp.fetch(url).getContentText();
      var object = JSON.parse(btcbasedata);
      
      return (object["bids"][0][0]);
    } else {
      return "Não consegui contato com o servidor";
    }
  }, 3000);// 3000 ms
}