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Agent Browser is a headless browser automation CLI purpose-built for AI agents. Unlike screenshot-based browser tools, it uses accessibility tree snapshots with reference-based element selection — giving agents a deterministic, efficient way to navigate web pages, fill forms, extract data, and automate multi-step workflows through the command line.

Key Features

Reference-based element selection using deterministic identifiers (@e1, @e2, etc.) for reliable interaction with page elements across snapshots
Interactive JSON snapshots that capture the full page state as structured data, far more efficient than parsing screenshots
Complete browser capabilities including navigation, form filling, clicking, hovering, checkbox toggling, and multi-tab management
Session isolation with separate browser contexts for parallel workflows, each with independent cookies and storage
Network control for blocking requests, mocking responses, and managing complex single-page applications
State persistence with cookie and local storage management for maintaining authenticated sessions

Use Cases

Automating multi-step web workflows like form submissions, data entry, or account management across multiple sites
Scraping and extracting structured data from dynamic web applications that require JavaScript execution
Testing web applications through automated interaction sequences with deterministic element targeting
Building agent pipelines that combine web research, data extraction, and action-taking in a single workflow

How It Works

The workflow follows three steps: navigate to a URL and capture the page state as a structured JSON snapshot, parse element references from the output to identify interactive targets, then execute actions using those refs (click, fill, hover, etc.). After each action that changes the page, a new snapshot reveals updated elements and state. This snapshot-then-act cycle enables reliable automation even on complex, dynamic web applications.

Getting Started

Install globally via npm with

npm install -g agent-browser

, then run

agent-browser install

to download the bundled Chromium instance. The CLI is immediately ready for use — no additional configuration or API keys required. Start with

agent-browser open <url>

to capture your first page snapshot.

Agent Browser

AI Skill Market Insights

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Key Features

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How It Works

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