Listen for postMessage from parent, log to console, enter it into the chat input, and submit
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// ==UserScript==
// @name Minimal ChatGPT Message Logger + Injector + Submitter
// @description Listen for postMessage from parent, log to console, enter it into the chat input, and submit
// @match https://chatgpt.com/*
// @version 0.0.1.20250512174502
// @namespace https://greasyfork.org/users/1435046
// ==/UserScript==
(function () {
'use strict';
window.addEventListener('message', function (event) {
// Handle search button clicks
if (event.data && event.data.type === 'searchButtonClicked') {
const searchBtn = document.querySelector('[data-testid="composer-button-search"]');
if (searchBtn) searchBtn.click();
return;
}
// Only respond to string messages
if (typeof event.data !== 'string') return;
// Locate ProseMirror composer
const composer = document.querySelector('.ProseMirror');
if (!composer) return;
console.log('Injecting message:', event.data);
// Focus and inject the text
composer.focus();
composer.innerText = event.data;
composer.dispatchEvent(new InputEvent('input', { bubbles: true }));
// Observe DOM changes until the send button is enabled
const observer = new MutationObserver(function (mutations, obs) {
const sendBtn = document.querySelector('[data-testid="send-button"]');
if (sendBtn && !sendBtn.disabled) {
obs.disconnect();
console.log('Submitting message');
sendBtn.click();
}
});
observer.observe(document, {
childList: true,
subtree: true,
attributes: true,
attributeFilter: ['disabled']
});
});
})();