That build hook URL for Netlify requires a POST request. But Drummer lets you run a script from the Iconbar. Here's mine.

const xhr = new XMLHttpRequest();
// XXX is given to you by Netlify
const hookUrl = 'https://api.netlify.com/build_hooks/XXX';
xhr.open('POST', hookUrl, true);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(JSON.stringify({}));