Local Browser AI Agent in a Chrome Extension with Gemma4 & WebGPU
Nico Martin built an AI agent that runs right in the browser
Everything is local, no servers, based on Gemma4 and WebGPU
It uses native tool calling to:
- search browser history
- read and summarize pages
- manage tabs
But the most interesting part isn’t that it works, it’s how the Transformers.js architecture is built inside a Chrome extension to make it work at all. Read about it .
, Chrome extension