clause-close-authentication.user.js

// ==UserScript==
// @name        Claude - handle authentication
// @namespace   Shmulik's Scripts
// @match       http://127.0.0.1:*/callback*
// @downloadURL  https://gist.githubusercontent.com/splintor/d2c656cf8759a90df981113041d759c1/raw
// @updateURL    https://gist.githubusercontent.com/splintor/d2c656cf8759a90df981113041d759c1/raw
// @icon
// @grant        window.close
// @version     1.0
// @author      shmulikf@wix.com
// ==/UserScript==

(function () {
      function closeSuccessfulAuthentication() {
          const h1 = Array.from(document.querySelectorAll('h1'))
              .find(el => el.textContent.trim() === 'Authentication Successful');


          if (h1) {
              clearInterval(interval);
              window.close();
          }
      }

      const interval = setInterval(closeSuccessfulAuthentication, 500);
      closeSuccessfulAuthentication();
  })();