MessAI

AI-powered assistant for Facebook Messenger. Generate smart responses with custom tones using AI.

Transform your Facebook Messenger conversations with AI-powered responses through this powerful Chrome extension that helps you craft perfect messages using artificial intelligence. Simply type prompt followed by your request and let AI generate professional, friendly, or creative responses instantly. This extension supports multiple AI models including Gemini which is completely free, GPT, and Claude, giving you flexibility in choosing your preferred AI assistant. You can select from various custom tones such as Default, Honest, Friendly, Weird, Nerd, and Cynic, or even create your own personalized tone to match your communication style. The extension includes smart templates that allow you to save and reuse frequently used messages, saving you time on repetitive conversations. History tracking lets you access your previous prompts and responses, making it easy to reference or reuse past interactions. Privacy is a core principle of this extension. All data is stored locally on your device with no external servers involved. Your API keys are stored securely on your machine, and the extension collects no data whatsoever. Using the extension is straightforward. After installation, obtain a free Gemini API key from Google AI Studio, open Facebook Messenger, and type prompt followed by your message request, such as write a thank you message. Press Enter and the AI instantly generates your response. This tool is perfect for crafting professional business messages, writing friendly casual replies, overcoming writer's block, helping non-native speakers improve their English communication, and anyone who wants to communicate more effectively and efficiently. The extension is completely free to use with the Gemini API, which offers generous limits of 15 requests per minute and 1500 requests per day at no cost. Optional paid models like GPT and Claude are available if you prefer those services, but there are no subscriptions, hidden costs, or mandatory payments. You can choose between two response formats. Edit Mode generates only the AI response by default, while Both Mode displays your original prompt alongside the AI-generated response, giving you context for the suggestion. Common use cases include composing thank you messages, writing apologies and explanations, drafting professional inquiries, maintaining casual conversations, creative writing assistance, language translation, and adjusting the tone of your messages to suit different contexts. Quick commands make the extension easy to use. Type prompt followed by your request in any chat window, right-click selected text for instant actions, use saved templates for immediate responses, and switch between different tones on the fly to match your communication needs. The extension is lightweight and fast, working seamlessly on both facebook.com and messenger.com. It supports multiple languages, receives regular updates and improvements, and integrates naturally into your existing Messenger workflow without slowing down your browser. Getting started takes just minutes. Click the extension icon, navigate to the Settings tab, add your Gemini API key which you can obtain free from aistudio.google.com, select your preferred tone, and start chatting with AI-enhanced messaging capabilities. This extension requires your own API key to function, ensuring you maintain complete control over your AI usage and costs. The Gemini API provides a free tier with generous limits suitable for most users. The extension does not collect, store, or transmit any of your data, conversations, or personal information, making your privacy the top priority. This is an independent tool created to enhance your Messenger experience and is not affiliated with, endorsed by, or connected to Facebook, Meta, Google, OpenAI, or Anthropic. It is designed solely to help users communicate more effectively using AI technology while maintaining full control over their data and privacy.