browser

browser is a skill for Claude Code, Codex from GGPrompts/TabzChrome. It costs 36 tokens per session (887 once invoked), scanned A, a copy of tabz-browser, MIT.

Browser automation tools for controlling Chrome tabs, including taking screenshots, filling forms, checking network requests and console errors, and sending text-to-speech notifications.

In plain words
What is it for?
Useful for testing web pages, checking responsive layouts on emulated devices, submitting forms, investigating failed web requests, and reviewing JavaScript errors.
Why use it?
It removes the need to perform browser checks manually or switch between separate debugging tools.

Skill for Claude CodeCodex

Part of the tabz plugin — 3 skills shipped together

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/ggprompts/tabzchrome/browser
Any agent
npx skills add GGPrompts/TabzChrome --skill browser
Clone the repo
git clone --depth 1 https://github.com/GGPrompts/TabzChrome

Made for: Claude Code, Codex.

Or install tabz, the plugin that ships this one along with the rest of its 3 skills.

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/ggprompts/tabzchrome/browser.svg)](https://agentmods.dev/skills/ggprompts/tabzchrome/browser)
Your own site
<a href="https://agentmods.dev/skills/ggprompts/tabzchrome/browser"><img src="https://agentmods.dev/badge/skills/ggprompts/tabzchrome/browser.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 887 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 88% 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 $0.00036 $0.00887
Opus 5 $0.00018 $0.00443
Sonnet 5 $0.00007 $0.00177
Haiku 4.5 $0.00004 $0.00089

Measured 5d ago against content hash a80d43d4b519, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 5d 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

88% identical to tabz-browser — 16 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.

plugins/tabz/skills/browser/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TabzChrome Browser Automation

Control Chrome via MCP tools for screenshots, interaction, debugging, and notifications.

Quick Start

Use mcp-cli to discover and call tools:

# Get tool schema (REQUIRED before calling)
mcp-cli info tabz/tabz_screenshot

# Call tool
mcp-cli call tabz/tabz_screenshot '{}'

Core Workflows

Screenshot a Page

# Get current tab info
mcp-cli call tabz/tabz_get_page_info '{}'

# Take screenshot
mcp-cli call tabz/tabz_screenshot '{}'
# Returns file path - use Read tool to view

Debug Network/API Issues

# 1. Enable capture BEFORE triggering action
mcp-cli call tabz/tabz_enable_network_capture '{}'

# 2. Trigger the action on page

# 3. Get failed requests (status >= 400)
mcp-cli call tabz/tabz_get_network_requests '{"statusMin": 400}'

# 4. Check console for JS errors
mcp-cli call tabz/tabz_get_console_logs '{"level": "error"}'

Test Responsive Design

# Emulate device
mcp-cli call tabz/tabz_emulate_device '{"device": "iPhone 14"}'

# Take screenshot
mcp-cli call tabz/tabz_screenshot '{}'

# Clear emulation
mcp-cli call tabz/tabz_emulate_clear '{}'

Fill and Submit Form

mcp-cli call tabz/tabz_fill '{"selector": "#email", "value": "[email protected]"}'
mcp-cli call tabz/tabz_click '{"selector": "button[type=submit]"}'

Notify User (TTS)

mcp-cli call tabz/tabz_speak '{"text": "Task complete"}'

Performance Profiling

mcp-cli call tabz/tabz_profile_performance '{}'
# Returns: DOM nodes, JS heap, event listeners, timing

DOM Tree Inspection

mcp-cli call tabz/tabz_get_dom_tree '{"maxDepth": 3}'

Tool Categories

Category Count Key Tools
Screenshots 2 screenshot, screenshot_full
Interaction 4 click, fill, get_element
Network 3 enable_network_capture, get_network_requests
DOM/Debug 4 get_dom_tree, get_console_logs, profile_performance
Emulation 6 emulate_device, emulate_geolocation
Audio/TTS 3 speak, list_voices, play_audio
Tabs 5 list_tabs, open_url, switch_tab
Cookies 5 cookies_get, cookies_list

Read the full file on GitHub · 126 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. 5d ago First seen · 126 lines · 36 tokens per session scan A a80d43d4b519

Subscribe to this mod's changes

browser is a skill published in the GitHub repository GGPrompts/TabzChrome (146 stars, last pushed 11d ago), licensed MIT. It adds 36 tokens to every session and 887 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to tabz-browser, differing in 16 lines, and is treated as a copy.

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