What is add-mass-account-antigravity-to-9router?

This project is a browser automation bot built to add a large batch of Google accounts to a tool called 9Router, specifically to its Antigravity provider section. Instead of a person clicking through the add-account flow one account at a time, the bot does it for you, one account after another, until the whole list is done. The bot reads a plain text file named akun.txt that you create yourself, with one account per line in the format email and password separated by a vertical bar. For each account, it opens a browser window, clicks through the Antigravity provider's add flow, fills in the Google login form, and confirms the login prompts that Google shows. Once an account is added successfully, it is automatically removed from akun.txt, so if the bot is stopped partway through, you can just run it again and it will pick up with the accounts still remaining in the file. A short delay is added between accounts to avoid triggering rate limits. Before running the bot, two setup steps are required inside 9Router itself: disabling the Require Login option in its settings, and checking that the target URL inside the bot's code points to where 9Router is actually running, which defaults to a local address on port 20128. The bot needs Node.js and Google Chrome installed, and it relies on the puppeteer package, which downloads its own Chromium browser during installation. It runs with a visible browser window rather than in headless mode, because Google blocks headless login attempts. The author notes the credentials file is never uploaded to GitHub for safety and must be created manually after cloning the repository, and describes the project as built for personal use, to be used at the user's own discretion and in line with applicable terms of service.