Safely bypass YouTube age restrictions, undetectably, for testing/educational purposes only.
// ==UserScript==
// @name YouTube Age Restriction Bypass (Stealth Version)
// @namespace http://tampermonkey.net/
// @version 5.0
// @description Safely bypass YouTube age restrictions, undetectably, for testing/educational purposes only.
// @author
// @match *://www.youtube.com/*
// @grant none
// ==/UserScript==
(function () {
'use strict';
const debug = false;
const log = msg => debug && console.log(`[YTBypass]: ${msg}`);
function overridePlayability(data) {
if (!data?.playabilityStatus) return data;
const status = data.playabilityStatus.status;
if (['AGE_VERIFICATION_REQUIRED', 'LOGIN_REQUIRED', 'UNPLAYABLE', 'RESTRICTED'].includes(status)) {
data.playabilityStatus.status = 'OK';
delete data.playabilityStatus.errorScreen;
delete data.playabilityStatus.messages;
log('Patched playability status.');
}
return data;
}
// Safe proxy for fetch
const nativeFetch = window.fetch;
window.fetch = new Proxy(nativeFetch, {
apply(target, thisArg, args) {
return Reflect.apply(target, thisArg, args).then(async response => {
const cloned = response.clone();
const url = (typeof args[0] === 'string') ? args[0] : args[0].url || '';
if (url.includes('/youtubei/v1/player')) {
try {
const json = await cloned.json();
const modified = overridePlayability(JSON.parse(JSON.stringify(json)));
const blob = new Blob([JSON.stringify(modified)], { type: 'application/json' });
return new Response(blob, {
status: response.status,
statusText: response.statusText,
headers: response.headers
});
} catch (e) {
log(`Fetch patch failed: ${e.message}`);
return response;
}
}
return response;
});
}
});
// Safe proxy for XMLHttpRequest
const NativeXHR = XMLHttpRequest;
window.XMLHttpRequest = new Proxy(NativeXHR, {
construct(target, args) {
const xhr = new target(...args);
let isBypassURL = false;
const originalOpen = xhr.open;
xhr.open = function (method, url) {
isBypassURL = url.includes('/youtubei/v1/player');
return originalOpen.apply(this, arguments);
};
const originalSend = xhr.send;
xhr.send = function () {
if (isBypassURL) {
xhr.addEventListener('readystatechange', function () {
if (xhr.readyState === 4 && xhr.responseType === '' && xhr.responseText) {
try {
const json = JSON.parse(xhr.responseText);
overridePlayability(json);
} catch (e) {
log('XHR patch failed');
}
}
});
}
return originalSend.apply(this, arguments);
};
return xhr;
}
});
// Inject script in page context to patch initial responses
function injectStealthPatchScript() {
const script = document.createElement('script');
script.textContent = `
(function() {
try {
const patch = (res) => {
if (!res?.playabilityStatus) return;
const status = res.playabilityStatus.status;
if (['AGE_VERIFICATION_REQUIRED','RESTRICTED','LOGIN_REQUIRED'].includes(status)) {
res.playabilityStatus.status = 'OK';
delete res.playabilityStatus.errorScreen;
console.log('[YTBypass] ytInitialPlayerResponse patched.');
}
};
if (window.ytInitialPlayerResponse) patch(window.ytInitialPlayerResponse);
if (window.ytplayer?.config?.args?.player_response) {
const res = JSON.parse(window.ytplayer.config.args.player_response);
patch(res);
window.ytplayer.config.args.player_response = JSON.stringify(res);
}
} catch (_) {}
})();
`;
document.documentElement.appendChild(script);
script.remove();
}
// Monitor page changes for player reload
new MutationObserver(() => {
if (document.querySelector('ytd-watch-flexy[is-restricted]')) {
log('Restricted video detected.');
setTimeout(injectStealthPatchScript, 1000);
}
}).observe(document.body, { childList: true, subtree: true });
})();