toggl-helper.user.js

// ==UserScript==
// @name                        toggl-helper
// @namespace                   toggl-helper
// @version                     0.3.1
// @author                      mescoda on http://mescoda.com/
// @include                     https://toggl.com/app/timer
// @grant                       unsafeWindow
// ==/UserScript==

document.body.addEventListener('keyup', function (e) {
    if (e.target.nodeName.toLowerCase() !== 'input') {
        switch (e.keyCode) {
            // i 73
            case 73:
                unsafeWindow.jQuery('.TimeEntryDescription__timeEntryDescription').click();
                unsafeWindow.jQuery('.TimeEntryDescription__timeEntryDescription').focus();
                break;
            // s 83
            case 83:
                unsafeWindow.toggl.model.TimeEntries.stopTracking();
                break;
            // n 78
        }
    }
});