I Built an AI Reply Tool for X and Saved Hours

Recently, I noticed that I was spending too much time responding to messages on the X platform. Whether I was interacting with friends or dealing with customer inquiries, manually typing each reply made me feel inefficient. Being a fan of automation, I decided to develop a tool to solve this problem. So, I created a Chrome extension that utilizes AI to automatically generate responses on X.

Why X and AI?

X is a fast-paced platform where the quality and speed of replies directly impacts the effectiveness of the interaction. My goal was to have AI generate natural and contextualized responses while retaining personalization. With the help of modern NLP models, such as the open source framework I use, I've made it possible for the tool to analyze the content of posts and generate contextual responses. For example, if someone asks “How does your product work?” for example, if someone asks “How does your product work?”, it can generate a response like “It's easy, just install it and click the X icon to get started!” based on preset rules or my input preferences. It's easy, just install and click the X icon to get started!

Technical Implementation

At the heart of this extension is a lightweight script embedded in Chrome. It listens for DOM changes in X, captures user interactions, and then sends the text input to a locally running AI model (I chose a small pre-trained model to minimize latency). Once the response is generated, the user can insert or edit it with a single click. The whole process takes less than 2 seconds. To make it available to everyone, I joined a free plan that provides 50 generated responses per month - enough for everyday use.

The biggest challenge in building was balancing speed and accuracy. Early model responses were too generic (e.g. “Great idea!”) ), and I've since fine-tuned the data and contextual cues to make it more relevant to my tone of voice. Now it mimics my style, even with the occasional bit of humor.

What I've learned

User experience first: I wanted to automate it completely at first, but realized that users prefer to control the final output, so I added a “preview” feature. Privacy: A lot of people were concerned about data security, so I made sure that all processing was done locally without uploading any content.

Community feedback: I shared the prototype on X during early testing and got a lot of suggestions, such as support for multi-language responses (in development).

Why did you share this?

I think this tool might be helpful to other X users, especially those who are busy content creators or small business owners. If you have similar pain points, try this extension: https://intellireply.app/. It's completely free to get started, 50 generation times per month, and feedback is welcome!

Also, I'd like to hear from you all: do you use this tool? Any suggestions for improvement? Or, how do you guys manage interaction time on X?