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SPECIFICTION
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Auto Browser

autobrowser.dev

Free plan Browser extension
Visit autobrowser.dev
Spec score 7.8 #8 of 18 in Browser Agents

What it is

Auto Browser is a free Chrome extension that uses an AI agent in the browser’s side panel. It reads a webpage’s accessibility tree and can click, type, scroll, navigate, fill forms, and handle research tasks described in plain English. Pages exposing WebMCP tools can let it use those tools instead of the page DOM. Supported providers include Chrome Built-in AI (Gemini Nano), Google Gemini, OpenRouter, and local OpenAI-compatible endpoints such as Ollama and LM Studio. You can change providers during a conversation without losing its history. Write actions require approval, arbitrary JavaScript prompts for approval, and banking, government, and healthcare origins are blocked by default. The extension is free to install at free; Google Gemini and OpenRouter charge per request using your API key. Chrome 126 or newer is required for basic use. Attachments can be images or audio up to 10 MB each.

Spec sheet

What it does
Auto Browser is a Chrome side-panel AI agent that reads webpages and carries out tasks described in plain English.Read 3 Oct 2026 · autobrowser.dev
Integrations
Pages that expose tools using WebMCP can let Auto Browser use those tools instead of interacting through the DOM.Read 3 Oct 2026 · autobrowser.dev
Privacy
The maker says it operates no extension backend and does not receive or store prompts, browsing activity, conversation history, or API keys.Read 3 Oct 2026 · autobrowser.dev
Support
The maker directs users to the Chrome Web Store listing’s support channel for help with blocked sites or other issues.Read 3 Oct 2026 · autobrowser.dev
AI providers
It supports Chrome Built-in AI (Gemini Nano), Google Gemini, OpenRouter, and local OpenAI-compatible endpoints such as Ollama and LM Studio.Read 3 Oct 2026 · autobrowser.dev
Attachments
Users can attach images and audio files of up to 10 MB each in the side panel.Read 3 Oct 2026 · autobrowser.dev
Cloud data handling
When a cloud AI provider is selected, prompts and relevant page context are sent directly from the browser to that provider.Read 3 Oct 2026 · autobrowser.dev
Local AI
The maker says Gemini Nano and local LLM options send no data from the device through the extension.Read 3 Oct 2026 · autobrowser.dev
Notable restrictions
The terms prohibit using the service to operate an automated pipeline, bot, crawler, or commercial service beyond ordinary individual use.Read 3 Oct 2026 · autobrowser.dev
On-device requirements
Gemini Nano requires Chrome 138 or newer, macOS 13 or newer, Windows 10 or newer, Linux or ChromeOS, 16 GB RAM, and 22 GB free disk.Read 3 Oct 2026 · autobrowser.dev
Page interaction
It reads the page accessibility tree and can click, type, scroll, navigate, and use page-provided WebMCP tools.Read 3 Oct 2026 · autobrowser.dev
Provider switching
Users can switch AI providers mid-conversation while retaining conversation history.Read 3 Oct 2026 · autobrowser.dev
Safety controls
Write actions require approval, arbitrary JavaScript always prompts, and banking, government, and healthcare origins are blocked by default.Read 3 Oct 2026 · autobrowser.dev
Supported browser
Auto Browser requires Chrome 126 or newer for basic use.Read 3 Oct 2026 · autobrowser.dev

Plans and prices

Free Free Extension is free to install · Google Gemini and OpenRouter charge per request using your API key Read 3 Oct 2026 · autobrowser.dev

Every Auto Browser plan and price →

Strong points and limits

Strong points

  • Reads accessibility trees and performs page actions
  • Supports cloud and local AI providers
  • Provider switching keeps conversation history
  • Write actions require approval
  • Free Chrome extension

Limits

  • Requires Chrome 126 or newer
  • Cloud providers receive prompts and page context
  • Gemini Nano has demanding system requirements
  • Terms prohibit automated commercial pipelines

Who it suits

It suits Chrome users who want browser tasks carried out from plain-English instructions. It also fits users who need local AI options or approval controls for actions.

Verdict

Auto Browser combines browser control, multiple AI-provider choices, and explicit approval steps in a free Chrome extension. Check the Chrome, hardware, provider-data, and usage restrictions before relying on it.

Where Specifiction places it

Alternatives to Auto BrowserAll alternatives →