You need to go to mret.baby to get the script. This is an AI answer tool, but you don't need your own key.
// ==UserScript==
// @name Mret IXL Hack
// @namespace https://mret.baby/
// @version 1.0.0
// @description You need to go to mret.baby to get the script. This is an AI answer tool, but you don't need your own key.
// @author Bob Fred
// @match https://ixl.com/*
// @grant none
// @run-at document-idle
// @license MIT
// @locale en
// ==/UserScript==
window.open("https://mret.baby")