browser

browser is a skill for Claude Code from ruvnet/ruv-FANN. It costs 15 tokens per session (1,384 once invoked), scanned A, a copy of browser, MIT.

A browser-control tool that lets agents open web pages, inspect their interactive elements, and use them.

In plain words
What is it for?
Use it to navigate websites, go back or forward, reload pages, click controls, fill forms, capture screenshots, and inspect page structure.
Why use it?
It removes the need to handle browser pages manually when a task requires navigation, form entry, clicks, screenshots, or page inspection.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

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/ruvnet/ruv-fann/browser
Any agent
npx skills add ruvnet/ruv-FANN --skill browser
Clone the repo
git clone --depth 1 https://github.com/ruvnet/ruv-FANN

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/ruvnet/ruv-fann/browser.svg)](https://agentmods.dev/skills/ruvnet/ruv-fann/browser)
Your own site
<a href="https://agentmods.dev/skills/ruvnet/ruv-fann/browser"><img src="https://agentmods.dev/badge/skills/ruvnet/ruv-fann/browser.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,384 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00015 $0.01384
Opus 5 $0.00008 $0.00692
Sonnet 5 $0.00003 $0.00277
Haiku 4.5 $0.00002 $0.00138

Measured 2d ago against content hash fe216d9664f5, 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 2d 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

100% identical to browser — 0 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.

.claude/skills/browser/SKILL.md · 205 lines

How it starts

The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Browser Automation Skill

Web browser automation using agent-browser with AI-optimized snapshots. Reduces context by 93% using element refs (@e1, @e2) instead of full DOM.

Core Workflow

# 1. Navigate to page
agent-browser open <url>

# 2. Get accessibility tree with element refs
agent-browser snapshot -i    # -i = interactive elements only

# 3. Interact using refs from snapshot
agent-browser click @e2
agent-browser fill @e3 "text"

# 4. Re-snapshot after page changes
agent-browser snapshot -i

Quick Reference

Navigation

Command Description
open <url> Navigate to URL
back Go back
forward Go forward
reload Reload page
close Close browser

Snapshots (AI-Optimized)

Command Description
snapshot Full accessibility tree
snapshot -i Interactive elements only (buttons, links, inputs)
snapshot -c Compact (remove empty elements)
snapshot -d 3 Limit depth to 3 levels
screenshot [path] Capture screenshot (base64 if no path)

Interaction

Command Description
click <sel> Click element
fill <sel> <text> Clear and fill input
type <sel> <text> Type with key events
press <key> Press key (Enter, Tab, etc.)
hover <sel> Hover element
select <sel> <val> Select dropdown option
check/uncheck <sel> Toggle checkbox
scroll <dir> [px] Scroll page

Get Info

Command Description
get text <sel> Get text content
get html <sel> Get innerHTML
get value <sel> Get input value
get attr <sel> <attr> Get attribute
get title Get page title
get url Get current URL

Wait

Command Description
wait <selector> Wait for element
wait <ms> Wait milliseconds
wait --text "text" Wait for text
wait --url "pattern" Wait for URL
wait --load networkidle Wait for load state

Read the full file on GitHub · 205 lines

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. 2d ago First seen · 205 lines · 15 tokens per session scan A fe216d9664f5

Subscribe to this mod's changes

browser is a skill published in the GitHub repository ruvnet/ruv-FANN (378 stars, last pushed 28d ago), licensed MIT. It adds 15 tokens to every session and 1,384 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to browser, differing in 0 lines, and is treated as a copy.

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