bb-browser provides AI agents with browser automation capabilities by controlling the user’s actual Chrome instance instead of headless browsers or scrapers. It runs code inside browser tabs to call fetch() with the user’s cookies, or invokes the page’s own JavaScript modules directly. The tool supports 103 commands across 36 platforms including Twitter, Reddit, YouTube, GitHub, and Wikipedia, allowing agents to perform searches, extract data, and interact with web services as if they were the human user.