browser

browser is a skill for Claude Code from UnicomAI/wanwu. It costs 47 tokens per session (511 once invoked), scanned A, original, Apache-2.0.

A command-line tool for controlling a web browser with plain-language instructions. It can open pages, inspect elements, extract information, take screenshots, and interact with forms and buttons.

In plain words
What is it for?
Navigating websites, collecting structured page data, discovering controls, filling forms, clicking elements, and capturing screenshots.
Why use it?
It lets developers automate browser tasks without writing each browser interaction manually.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

About the project

Wanwu is an enterprise platform for building AI agents, workflows, retrieval-augmented applications, and managing models in multi-tenant environments. It is designed for developers and enterprise teams delivering AI applications and integrations. The catalogue entries provide skills and agents for using the platform.

UnicomAI/wanwu · 2,458 stars · on GitHub

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.

agentmods
npx agentmods add skills/unicomai/wanwu/browser-automation
Any agent
npx skills add UnicomAI/wanwu --skill browser-automation
Clone the repo
git clone --depth 1 https://github.com/UnicomAI/wanwu

Made for: Claude Code.

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.

agentmods badge for browser

README.md
[![agentmods](https://agentmods.dev/badge/skills/unicomai/wanwu/browser-automation.svg)](https://agentmods.dev/skills/unicomai/wanwu/browser-automation)
Your own site
<a href="https://agentmods.dev/skills/unicomai/wanwu/browser-automation"><img src="https://agentmods.dev/badge/skills/unicomai/wanwu/browser-automation.svg" alt="Measured on agentmods" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 511 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00047 $0.00511
Opus 5 $0.00023 $0.00255
Sonnet 5 $0.00009 $0.00102
Haiku 4.5 $0.00005 $0.00051

Measured 6d ago against content hash 9705b3b7bb8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

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 6d 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

Copies of this mod

2 near-identical copies found in the catalogue:

  • browser — 100% identical, 0 lines differ
  • browser — 100% identical, 0 lines differ
configs/microservice/bff-service/configs/agent-skills/clawhub/browser-automation/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Browser Automation

Automate browser interactions using Stagehand CLI with Claude.

First: Environment Selection (Local vs Remote)

The skill automatically selects between local and remote browser environments:

  • If Browserbase API keys exist (BROWSERBASE_API_KEY and BROWSERBASE_PROJECT_ID in .env file): Uses remote Browserbase environment
  • If no Browserbase API keys: Falls back to local Chrome browser
  • No user prompting: The selection happens automatically based on available configuration

Setup (First Time Only)

Check setup.json in this directory. If setupComplete: false:

npm install    # Install dependencies
npm link       # Create global 'browser' command

Commands

All commands work identically in both modes:

browser navigate <url>                    # Go to URL
browser act "<action>"                    # Natural language action
browser extract "<instruction>" ['{}']    # Extract data (optional schema)
browser observe "<query>"                 # Discover elements
browser screenshot                        # Take screenshot
browser close                             # Close browser

Quick Example

browser navigate https://example.com
browser act "click the Sign In button"
browser extract "get the page title"
browser close

Mode Comparison

Feature Local Browserbase
Speed Faster Slightly slower
Setup Chrome required API key required
Stealth mode No Yes
Proxy/CAPTCHA No Yes
Best for Development Production/scraping

Best Practices

  1. Always navigate first before interacting
  2. View screenshots after each command to verify
  3. Be specific in action descriptions
  4. Close browser when done

Troubleshooting

  • Chrome not found: Install Chrome or use Browserbase mode
  • Action fails: Use browser observe to discover available elements
  • Browserbase fails: Verify API key and project ID are set

Read the full file on GitHub · 74 lines

Files

What ships with it

5 files 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.

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.

  1. 6d ago First seen · 74 lines · 47 tokens per session scan A 9705b3b7bb8d

Subscribe to this mod's changes

browser is a skill published in the GitHub repository UnicomAI/wanwu (2,458 stars, last pushed yesterday), licensed Apache-2.0. It adds 47 tokens to every session and 511 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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