What is agent-browser?

A command-line tool that automates browser interactions. It can navigate websites, inspect page elements, click controls, fill forms, take screenshots, and extract data.

Website navigation, form filling, web-app testing, screenshots, data extraction, and other browser workflows.

It handles repetitive web actions consistently and gives the agent a structured view of interactive elements to work with.

agent-browser — Skill for Claude Code and Codex by majiayu000

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add majiayu000/claude-skill-registry --skill agent-browser-camflan-dotfiles

Clone the repo

git clone --depth 1 https://github.com/majiayu000/claude-skill-registry

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-browser-camflan-dotfiles/github.svg)](https://agentmods.dev/skills/majiayu000/claude-skill-registry/agent-browser-camflan-dotfiles)

Your own site

<a href="https://agentmods.dev/skills/majiayu000/claude-skill-registry/agent-browser-camflan-dotfiles"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-browser-camflan-dotfiles/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/majiayu000/claude-skill-registry/agent-browser-camflan-dotfiles"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-browser-camflan-dotfiles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,017 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 89% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00051	$0.01017
Opus 5	$0.00026	$0.00508
Sonnet 5	$0.00010	$0.00203
Haiku 4.5	$0.00005	$0.00102

Measured 9d ago against content hash 31fc66e0a003, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

agent-browser scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

89% identical to agent-browser — 82 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/agent/agent-browser-camflan-dotfiles/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Browser Automation with agent-browser

Installation

npm install -g agent-browser
agent-browser install  # Download Chromium

Quick start

agent-browser open <url>           # Navigate to page
agent-browser snapshot -i          # Get interactive elements with refs
agent-browser click @e1            # Click element by ref
agent-browser fill @e2 "text"      # Fill input by ref
agent-browser close                # Close browser

Core workflow

Navigate: agent-browser open <url>
Snapshot: agent-browser snapshot -i (returns elements with refs like @e1, @e2)
Interact using refs from the snapshot
Re-snapshot after navigation or significant DOM changes

Commands

Navigation

agent-browser open <url>           # Navigate to URL
agent-browser back                 # Go back
agent-browser forward              # Go forward
agent-browser reload               # Reload page
agent-browser close                # Close browser

Snapshot (page analysis)

agent-browser snapshot             # Full accessibility tree
agent-browser snapshot -i          # Interactive elements only (recommended)
agent-browser snapshot -c          # Compact output
agent-browser snapshot -d 3        # Limit depth to 3

Interactions (use @refs from snapshot)

agent-browser click @e1            # Click
agent-browser dblclick @e1         # Double-click
agent-browser fill @e2 "text"      # Clear and type
agent-browser type @e2 "text"      # Type without clearing
agent-browser press Enter          # Press key
agent-browser press Control+a      # Key combination
agent-browser hover @e1            # Hover
agent-browser check @e1            # Check checkbox
agent-browser uncheck @e1          # Uncheck checkbox
agent-browser select @e1 "value"   # Select dropdown
agent-browser scroll down 500      # Scroll page
agent-browser scrollintoview @e1   # Scroll element into view

Get information

agent-browser get text @e1         # Get element text
agent-browser get value @e1        # Get input value
agent-browser get title            # Get page title
agent-browser get url              # Get current URL

Read the full file on GitHub · 158 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

metadata.json 845 B

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

9d ago First seen · 158 lines · 51 tokens per session scan A 31fc66e0a003

Subscribe to this mod's changes

agent-browser is a skill published in the GitHub repository majiayu000/claude-skill-registry (606 stars, last pushed today), licensed MIT. It adds 51 tokens to every session and 1,017 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to agent-browser, differing in 82 lines, and is treated as a copy.

Browser automation Claude Code ai-skills generated-artifact github-pages skill-registry skills

agent-browser