hearthealt/kyl-sub2api-extension

This is a Chrome browser extension that automates a multi-step sign-up flow. Specifically, it walks through the Kyl invite process, completes an OpenAI OAuth login, intercepts the callback that comes back to localhost, and then uses that result to register an account with a service called SUB2API. The whole sequence normally requires a user to click through several pages manually, this extension does those steps automatically. The extension is built to the Manifest V3 standard, which is the current version of the Chrome extension format. It has three main parts: a background service worker that tracks the state of the flow and handles requests and callbacks, a content script that automates the page interactions across the Kyl, OpenAI, and provider pages, and a side panel that gives the user a visible interface to enter their SUB2API address and API key, choose a group, set how many times to run, and watch a log of what happened. Before each run, the extension clears any existing ChatGPT and OpenAI cookies in the browser to avoid interference from prior login sessions. The extension requires broad permission to access several different websites because the automated flow passes through multiple domains. Installation is manual: load the folder as an unpacked extension through Chrome's developer mode settings. The API key a user enters is saved only in the extension's local storage inside the browser and is not included in the repository code. The README is sparse and covers only installation and basic usage steps.