Fabraix: Technical Browser Agent Security

This demo is a technical show-and-tell of how we built Fabraix, a browser-native AI assistant designed from the ground up to be trustworthy. I’ll walk through the architecture of our Chrome extension, focusing on the interplay between the local agent running in the browser and our core security engine. We’ll dive into the code that captures page context in real-time, how we process it securely, and the design decisions we made to prevent the agent from being hijacked, even when connected to sensitive web apps. Expect a live demo of the agent completing a complex task, with a walkthrough of the specific security checks happening at each step.