Local AI Agent Browser Extension: Hermes in 120ms A developer built a local AI agent browser extension called Hermes that runs entirely on the user's machine, avoiding sending browsing data to cloud LLM APIs. The extension scrapes web page context and sends it to a local Hermes agent runtime, enabling private and low-latency AI-powered web interactions for sensitive internal applications. This article was originally published on BuildZn . Everyone's talking about connecting AI to the web, but nobody tells you how to do it privately, without sending your entire browsing history to some vendor's cloud. I needed a local AI agent browser extension that actually worked for sensitive internal stuff. Here's how I hacked it together, and frankly, it's the only way to do it right for production. Look, sending sensitive web content to a public LLM API is a non-starter for most serious applications, especially internal tools. Compliance nightmares, data leakage risks – it's all there. Plus, the latency of round-tripping to OpenAI or Claude just kills the user experience for real-time analysis. I built FarahGPT with a multi-agent setup; you can't have agents waiting seconds for context. You need that web context to LLM pipeline to be instant . Here's why you should go local: We're talking about running an actual hermes agent local runtime on your machine. Think of NexusOS, where agent governance is paramount. You can't govern what you can't control. The basic idea is simple but critical: This setup ensures a private AI agent web interaction. The extension only talks to localhost , and your LLM never sees the public internet. This browser extension AI integration is a game-changer for bespoke automation. Let's get to the code. We'll need three parts: the browser extension Chrome/Edge/Brave compatible , and a simple Node.js server. Create a directory named my-ai-ext . Inside it: manifest.json { "manifest version": 3, "name": "Hermes Web Context Connector", "version": "1.0.0", "description": "Feeds current web page context to a local Hermes AI agent.", "permissions": "activeTab", "scripting" , "host permissions": "