/*Be aware that this method could potentially delete your Minecraft license.  I used it on an alt, not my main.  If you want to use this on your main account, be aware of the risks.
Open your browser, and head to minecraft.net - make sure you are logged in.  Then press Ctrl+Shift+I to open Developer tools/inspect.  Click on console and paste the text below then hit enter. You should have the cape!!*/

const mcToken = JSON.parse(localStorage.getItem('MCToken')).mcToken;

fetch("https://net.web.minecraft-services.net/api/v1.0/grant/offer?offer=7118a7d5-240e-4f6d-8959-5269ba041938", {
  "headers": {
    "accept": "/",
    "accept-language": "en-US,en;q=0.9",
    "authorization": mcToken,
    "content-type": "application/json",
    "priority": "u=1, i",
    "sec-ch-ua-mobile": "?0",
    "sec-ch-ua-platform":"Windows",
    "sec-fetch-dest": "empty",
    "sec-fetch-mode": "cors",
    "sec-fetch-site": "cross-site"
  },
  "referrer": "https://www.minecraft.net/",
  "referrerPolicy": "strict-origin-when-cross-origin",
  "body": null,
  "method": "PUT",
  "mode": "cors",
  "credentials": "include"
})
.then(response => {
    console.log('Status Code:', response.status);
  })