aeonfun/opendia ? reverse-engineered prompt

Build me an app that connects an AI assistant to my browser so it can actually control sites I’m already logged into, instead of making me switch tools.

I want a local first setup that works with Chrome, Arc, Firefox, and other Chromium browsers, and exposes a simple way for an AI client to talk to the browser through MCP. It should let the assistant open pages, read content, click buttons, fill forms, take screenshots, and use my existing sessions, bookmarks, cookies, and installed extensions like password managers or wallets.

Please make the setup feel easy, with one command to run locally, clear install steps for the browser extension, and a way to optionally use a tunnel for cloud AI tools. Keep it privacy focused and make sure it runs on my machine by default. If you need to check current docs or browser extension details, look them up online.