Nanobrowser — AI Web Automation Chrome Extension

Nanobrowser Multi-Agent Architecture

Agent Roles

┌──────────────────────────────┐
│         User Request         │
│  "Book a table for 2 at..."  │
└──────────┬───────────────────┘
           │
    ┌──────▼──────┐
    │   Planner   │  Breaks task into steps
    │   Agent     │  Monitors progress
    └──────┬──────┘  Self-corrects on errors
           │
    ┌──────▼──────┐
    │  Navigator  │  Executes browser actions
    │   Agent     │  Clicks, types, scrolls
    └──────┬──────┘  Reads page content
           │
    ┌──────▼──────┐
    │  Validator  │  Checks task completion
    │   Agent     │  Reports results
    └─────────────┘

How It Works

1. Task Decomposition — The Planner agent analyzes your request and creates a step-by-step plan
2. Web Navigation — The Navigator agent executes actions: clicking buttons, filling forms, scrolling pages
3. Self-Correction — When obstacles arise (popups, CAPTCHAs, changed layouts), agents adapt their strategy
4. Result Delivery — The Validator confirms task completion and returns results in the side panel

Flexible Model Assignment

Use different models for different agents to optimize cost and performance:

Supported Providers

Privacy & Security

• 100% local execution — All processing happens in your browser
• Your keys, your data — API keys stored locally, never sent to Nanobrowser servers
• No subscription — Completely free, pay only for your LLM API usage
• Open source — Full code audit available on GitHub

Example Tasks

📋 "Go to Amazon, search for wireless earbuds under $50, and list the top 5 rated ones"

📋 "Open Google Scholar, search for 'transformer architecture', and extract the top 10 paper titles with citation counts"

📋 "Navigate to GitHub trending, filter by Python, and list today's top repositories"

📋 "Go to my Gmail, find the latest email from John, and summarize it"

📋 "Search for 3-bedroom apartments in Austin TX on Zillow under $2000/month"

FAQ

Q: What is Nanobrowser? A: Nanobrowser is a free, open-source Chrome extension with 12,600+ GitHub stars that uses AI multi-agent collaboration to automate web tasks directly in your browser. A free alternative to OpenAI Operator.

Q: Is Nanobrowser safe? Does it send my data anywhere? A: Yes, it's safe. Everything runs locally in your browser. Your API keys and browsing data are stored locally and never sent to Nanobrowser's servers. The only external calls are to your configured LLM provider.

Q: Is Nanobrowser free? A: Yes, the extension is 100% free and open-source under Apache-2.0. You only pay for LLM API usage from your chosen provider (OpenAI, Anthropic, etc.).