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Experimental payload modifier for Grok Video Generation
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// ==UserScript==
// @name Grok Payload Experiment
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Experimental payload modifier for Grok Video Generation
// @author Methamphetamine and Cum
// @match https://grok.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=grok.com
// @grant none
// ==/UserScript==
(function () {
'use strict';
// --- UI Construction ---
const createUI = () => {
const container = document.createElement('div');
container.id = 'grok-payload-exp-ui';
container.style.cssText = `
position: fixed;
top: 80px;
right: 20px;
width: 300px;
background: #1a1a1a;
border: 1px solid #333;
border-radius: 8px;
padding: 15px;
z-index: 999999;
color: #fff;
font-family: sans-serif;
box-shadow: 0 4px 15px rgba(0,0,0,0.5);
`;
const title = document.createElement('h3');
title.textContent = 'Payload Experiment';
title.style.cssText = 'margin: 0 0 15px 0; font-size: 16px; color: #4ade80; display: flex; justify-content: space-between; align-items: center;';
const toggleBtn = document.createElement('button');
toggleBtn.textContent = 'Hide';
toggleBtn.style.cssText = 'background: none; border: none; color: #888; cursor: pointer; font-size: 12px;';
toggleBtn.onclick = () => {
const content = container.querySelector('.exp-content');
if (content.style.display === 'none') {
content.style.display = 'block';
toggleBtn.textContent = 'Hide';
} else {
content.style.display = 'none';
toggleBtn.textContent = 'Show';
}
};
title.appendChild(toggleBtn);
container.appendChild(title);
const content = document.createElement('div');
content.className = 'exp-content';
// Helper to create inputs
const createGroup = (label, element) => {
const group = document.createElement('div');
group.style.marginBottom = '12px';
const labelEl = document.createElement('label');
labelEl.textContent = label;
labelEl.style.cssText = 'display: block; margin-bottom: 5px; font-size: 12px; color: #ccc;';
group.appendChild(labelEl);
group.appendChild(element);
return group;
};
// 1. Enable Toggle
const enableCheck = document.createElement('input');
enableCheck.type = 'checkbox';
enableCheck.id = 'exp-enable';
enableCheck.checked = true;
content.appendChild(createGroup('Enable Interception', enableCheck));
// 2. Aspect Ratio
const arSelect = document.createElement('select');
arSelect.id = 'exp-ar';
arSelect.style.cssText = 'width: 100%; padding: 5px; background: #333; color: #fff; border: 1px solid #555; border-radius: 4px;';
['Default (Unchanged)', '1:1', '16:9', '9:16', '4:3', '3:4', '2:1', '1:2'].forEach(ar => {
const opt = document.createElement('option');
opt.value = ar === 'Default (Unchanged)' ? '' : ar;
opt.textContent = ar;
arSelect.appendChild(opt);
});
content.appendChild(createGroup('Target Aspect Ratio', arSelect));
// 3. Video Length
const lenInput = document.createElement('input');
lenInput.type = 'number';
lenInput.id = 'exp-len';
lenInput.min = 1;
lenInput.max = 15;
lenInput.placeholder = 'Default (6)';
lenInput.style.cssText = 'width: 100%; padding: 5px; background: #333; color: #fff; border: 1px solid #555; border-radius: 4px;';
content.appendChild(createGroup('Video Length (seconds)', lenInput));
// 4. Image URL Swap
const urlInput = document.createElement('textarea');
urlInput.id = 'exp-url';
urlInput.placeholder = 'Paste Image URL here to swap source...';
urlInput.rows = 3;
urlInput.style.cssText = 'width: 100%; padding: 5px; background: #333; color: #fff; border: 1px solid #555; border-radius: 4px; resize: vertical; font-size: 11px;';
content.appendChild(createGroup('Swap Source Image URL', urlInput));
// Status Log
const statusLog = document.createElement('div');
statusLog.id = 'exp-status';
statusLog.style.cssText = 'margin-top: 10px; padding: 8px; background: #000; border-radius: 4px; font-size: 10px; color: #aaa; max-height: 100px; overflow-y: auto; font-family: monospace;';
statusLog.textContent = 'Ready...';
content.appendChild(statusLog);
container.appendChild(content);
document.body.appendChild(container);
};
const log = (msg) => {
const el = document.getElementById('exp-status');
if (el) {
const line = document.createElement('div');
line.textContent = `[${new Date().toLocaleTimeString()}] ${msg}`;
line.style.borderBottom = '1px solid #222';
el.prepend(line);
}
console.log('[GrokExp]', msg);
};
// --- Logic ---
const extractUuid = (url) => {
// Matches standard UUID pattern
const match = url.match(/([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})/i);
return match ? match[1] : null;
};
const modifyPayload = (originalBody) => {
try {
const body = JSON.parse(originalBody);
// Only target video generation requests
if (!body.toolOverrides || !body.toolOverrides.videoGen) {
return originalBody;
}
const enable = document.getElementById('exp-enable')?.checked;
if (!enable) return originalBody;
log('Intercepted Video Gen Request!');
let config = body.responseMetadata?.modelConfigOverride?.modelMap?.videoGenModelConfig;
if (!config) {
// Initialize structure if missing (unlikely for video gen but safe)
if (!body.responseMetadata) body.responseMetadata = {};
if (!body.responseMetadata.modelConfigOverride) body.responseMetadata.modelConfigOverride = {};
if (!body.responseMetadata.modelConfigOverride.modelMap) body.responseMetadata.modelConfigOverride.modelMap = {};
body.responseMetadata.modelConfigOverride.modelMap.videoGenModelConfig = {};
config = body.responseMetadata.modelConfigOverride.modelMap.videoGenModelConfig;
}
// 1. Aspect Ratio
const ar = document.getElementById('exp-ar')?.value;
if (ar) {
log(`Overriding AR: ${config.aspectRatio} -> ${ar}`);
config.aspectRatio = ar;
}
// 2. Video Length
const len = document.getElementById('exp-len')?.value;
if (len) {
const val = parseInt(len);
if (!isNaN(val)) {
log(`Overriding Length: ${config.videoLength} -> ${val}`);
config.videoLength = val;
}
}
// 3. Image Swap
const swapUrl = document.getElementById('exp-url')?.value?.trim();
if (swapUrl) {
const newUuid = extractUuid(swapUrl);
if (newUuid) {
log(`Swapping Image ID: ${config.parentPostId} -> ${newUuid}`);
// Update parentPostId
config.parentPostId = newUuid;
// Update Message URL
// We need to be careful to replace just the URL part
// Strategy: Find the existing UUID in the message and replace the whole URL containing it?
// Or just prepend the new URL if we are constructing a fresh message?
// Existing message examples:
// "https://.../OLD_UUID.png --mode=normal"
// "https://.../OLD_UUID/content \"prompt\" ..."
// Let's try to find the URL in the message
// Regex to find http...UUID...
// It might end with space, quote, or end of string
const urlRegex = /https?:\/\/[^\s"]+([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})[^\s"]*/i;
if (body.message && body.message.match(urlRegex)) {
body.message = body.message.replace(urlRegex, swapUrl);
log('Updated Message URL');
} else {
// Fallback if regex fails (maybe message format changed)
// Just prepend/replace? Let's warn.
log('Warning: Could not find URL in message to replace. Appending new URL.');
body.message = swapUrl + " " + body.message;
}
// Update fileAttachments if present (for user uploads)
if (body.fileAttachments && Array.isArray(body.fileAttachments)) {
// If we are swapping, we should probably replace the attachment ID
// Assuming single attachment for video gen
body.fileAttachments = [newUuid];
log('Updated fileAttachments');
}
} else {
log('Error: Invalid UUID in swap URL');
}
}
return JSON.stringify(body);
} catch (e) {
console.error('[GrokExp] Error modifying payload:', e);
log('Error modifying payload: ' + e.message);
return originalBody;
}
};
// --- Interceptor ---
const originalFetch = window.fetch;
window.fetch = async function (input, init) {
let url = input;
if (input instanceof Request) {
url = input.url;
}
if (url && url.includes('/rest/app-chat/conversations/new') && init && init.method === 'POST' && init.body) {
const newBody = modifyPayload(init.body);
init.body = newBody;
}
return originalFetch.apply(this, arguments);
};
// --- Init ---
// Wait for body
const waitInterval = setInterval(() => {
if (document.body) {
clearInterval(waitInterval);
createUI();
log('Interceptor Active');
}
}, 500);
})();