explaingit

joyyyced/xgrower-extension

★ 20TypeScriptAudience · generalComplexity · 2/5ActiveLicenseSetup · easy

TLDR

Chrome extension called ChatterBox that drops template buttons next to X and LinkedIn reply boxes, then calls your own OpenAI key to generate replies in styles like Funny or Insightful.

Mindmap

mindmap
  root((ChatterBox))
    Inputs
      OpenAI API key
      Template choice
      Tweet or post context
    Outputs
      Generated reply text
      LinkedIn connection message
      Editable draft in reply box
    Use Cases
      Speed up X reply growth
      Personalize LinkedIn outreach
      Test different reply voices
    Tech Stack
      TypeScript
      Webpack
      Chrome extension

Things people build with this

USE CASE 1

Reply to dozens of tweets per day in a chosen voice such as Sarcastic or Insightful

USE CASE 2

Generate personalized LinkedIn connection messages from a template

USE CASE 3

Tune the system prompt to match your own X persona

USE CASE 4

Route requests through OpenRouter instead of OpenAI directly

Tech stack

TypeScriptWebpackChrome Extension

Getting it running

Difficulty · easy Time to first run · 30min

Needs a paid OpenAI or OpenRouter API key stored in Chrome local storage before any template button will produce a reply.

MIT, you can use, modify, and distribute the code commercially as long as you keep the copyright and license notice.

In plain English

This repository holds a Chrome browser extension called ChatterBox that uses an AI model to write replies for you on X (formerly Twitter) and LinkedIn. The repository name on GitHub is xgrower-extension and the description credits GrowthHunt.ai, but inside the code and README it goes by ChatterBox. When you click the reply button on a tweet, the extension adds template buttons next to the reply box. You pick a template like Question, Funny, Agree, Sarcastic, or Insightful, and the extension calls the AI to generate a reply in that style, which you can then edit before posting. The extension supports OpenAI models such as GPT-5, GPT-4, and GPT-4o. You bring your own API key, which is stored locally in Chrome's storage rather than on any server. The settings popup also lets you change the system prompt that shapes the AI's voice, pick a model, and adjust advanced parameters like temperature, maximum tokens, presence penalty, and frequency penalty. The troubleshooting section mentions OpenRouter as well, which suggests the project may also route through that service. There are about ten built-in X templates, covering questions, jokes, agreement, sarcasm, insight, disagreement, congratulations, generic replies, and encouragement. For LinkedIn there are connection-message templates aimed at personalized outreach. The code is written in TypeScript and bundled with webpack. To install it, you clone the repository, run npm install and npm run build, then load the unpacked extension folder through Chrome's developer mode page. The project is MIT licensed and has 20 stars.

Copy-paste prompts

Prompt 1
Clone xgrower-extension, run npm install and npm run build, then walk me through loading the unpacked extension
Prompt 2
Configure ChatterBox with my OpenAI key and switch the model to GPT-4o with temperature 0.8
Prompt 3
Add a new X reply template called Snarky and wire it into the template button list
Prompt 4
Customize the system prompt so replies sound like a senior founder rather than a hype account
Prompt 5
Show me how to switch the backend from OpenAI to OpenRouter in the settings popup
Open on GitHub → Explain another repo

Generated 2026-05-22 · Model: sonnet-4-6 · Verify against the repo before relying on details.