Auto-clicks the only account, or the sun-asterisk account when app_domain contains sun-asterisk
// ==UserScript==
// @name Auto-select Single Google Account
// @namespace https://accounts.google.com
// @version 1.1
// @description Auto-clicks the only account, or the sun-asterisk account when app_domain contains sun-asterisk
// @match https://accounts.google.com/o/oauth2/auth*
// @match https://accounts.google.com/v3/signin/accountchooser*
// @run-at document-end
// @license MIT
// ==/UserScript==
(function () {
'use strict';
const SUN_MARKER = 'sun-asterisk';
function decodeURIComponentSafe(s) {
try {
return decodeURIComponent(s);
} catch {
return s;
}
}
/** True when query param app_domain contains sun-asterisk (case-insensitive). */
function appDomainHasSunAsterisk() {
const params = new URLSearchParams(window.location.search);
const raw = params.get('app_domain') || '';
const decoded = decodeURIComponentSafe(raw);
const needle = SUN_MARKER.toLowerCase();
return (
raw.toLowerCase().includes(needle) ||
decoded.toLowerCase().includes(needle)
);
}
function clickIfSingleAccount() {
const accounts = document.querySelectorAll('div[data-identifier]');
if (accounts.length === 1) {
console.log('✅ One Google account detected, auto-selecting...');
accounts[0].click();
return;
}
if (accounts.length > 1 && appDomainHasSunAsterisk()) {
const needle = SUN_MARKER.toLowerCase();
const match = [...accounts].find((el) => {
const id = (el.getAttribute('data-identifier') || '').toLowerCase();
return id.includes(needle);
});
if (match) {
console.log('✅ Multiple accounts; app_domain has sun-asterisk — selecting matching account.');
match.click();
return;
}
console.log('ℹ️ Multiple accounts and app_domain has sun-asterisk, but no account email contains sun-asterisk.');
return;
}
console.log(`ℹ️ ${accounts.length} Google accounts detected — skipping auto-click.`);
}
// Handle dynamically loaded content
const observer = new MutationObserver((_, obs) => {
if (document.querySelectorAll('div[data-identifier]').length > 0) {
clickIfSingleAccount();
obs.disconnect();
}
});
observer.observe(document.body, { childList: true, subtree: true });
// Fallback (in case MutationObserver misses it)
setTimeout(clickIfSingleAccount, 1000);
})();