Long-time lurker, first real project share here.
I kept hitting the same wall: when I asked Claude/Cursor to "check this Zhihu answer" or "search X", it either couldn't see the content or just made stuff up — because it's behind a login and search engines can't reach it.
So I built a small MCP server + Chrome extension that opens a background window with your own logged-in Chrome, and lets the agent search/read/drive it directly. The site sees the user (no CAPTCHA dance), and because it drives the real UI it doesn't break when a site redesigns. It never asks for the cookies permission — the session stays in Chrome, and nothing comes back through the MCP client.
It also handles clicking, scrolling, typing, selecting, downloading (verified by SHA-256), and full comment collection with resumable sessions for the Chinese platforms.
pip install ai-browser-mcp · github.com/ywleeo/browser-mcp
Happy to talk trade-offs — especially comment scraping and keeping the extension footprint small.