How do I install the Browser Verify skill?

Run npx skillmds@latest add arozumenko/browser-verify-2 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Browser Verify skill do?

Use when you need to run arbitrary JS in a page, inspect cookies/localStorage, check computed styles, emulate devices, or drive real mouse/keyboard events. Chrome DevTools Protocol browser automation with zero external dependencies. It is listed under Coding & Dev Tools on SkillMD.

Is Browser Verify safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: executes scripts, makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Browser Verify?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Browser Verify free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under Apache-2.

Who published Browser Verify?

arozumenko (@arozumenko) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Browser Verify by arozumenko — Agent Skill

Name: Browser Verify
Rating: 4.5 (4 reviews)
Author: arozumenko

Browser Verify

Testing-grade browser automation using Chrome controlled through the Chrome DevTools Protocol. All interactions use real CDP Input domain events (mouse coordinates, key events) — not synthetic JS .click(). Zero external dependencies beyond Node 22's built-in WebSocket.

Architecture

Scripts live in the scripts/ directory alongside this SKILL.md:

chrome-launcher.sh — Start/stop/status Chrome with remote debugging
cdp.mjs — Full CDP client with 50+ commands

No npm install required. Uses Node 22 built-in WebSocket.

Resolving Script Paths

The scripts are in the scripts/ subdirectory of this skill. Resolve the path from your .claude/skills/browser-verify/ install location:

SCRIPTS=".claude/skills/browser-verify/scripts"

bash "$SCRIPTS/chrome-launcher.sh" start --headless
node "$SCRIPTS/cdp.mjs" navigate "https://example.com"

Workflow

1. Start Chrome

bash "$SCRIPTS/chrome-launcher.sh" start
# Headless (no window, faster):
bash "$SCRIPTS/chrome-launcher.sh" start --headless

2. Run Commands

node "$SCRIPTS/cdp.mjs" <command> [args] [--flags]

3. Stop Chrome

bash "$SCRIPTS/chrome-launcher.sh" stop

Command Reference

Navigation

Command	Example	Purpose
`navigate <url>`	`navigate "https://example.com"`	Open URL, wait for load
`reload`	`reload`	Reload current page
`back`	`back`	Browser back
`forward`	`forward`	Browser forward
`page-info`	`page-info`	Title, URL, counts, viewport, meta
`list-targets`	`list-targets`	List open tabs
`new-tab [url]`	`new-tab "https://example.com/about"`	Open new tab
`close-tab [id]`	`close-tab`	Close tab

Visual

Command	Example	Purpose
`screenshot`	`screenshot --output /tmp/page.png`	Full page capture
`screenshot --selector <s>`	`screenshot --selector ".card"`	Element capture
`screenshot --full`	`screenshot --full --output /tmp/full.png`	Beyond viewport
`viewport <w> <h>`	`viewport 375 812`	Set viewport size
`pdf`	`pdf --output /tmp/page.pdf`	Save as PDF
`emulate <device>`	`emulate mobile`	Device emulation

Available devices: mobile, iphone, ipad, tablet, android, desktop, laptop

DOM Inspection

Command	Example	Purpose
`evaluate <js>`	`evaluate "document.title"`	Run JS in page context
`get-html [--selector s]`	`get-html --selector "#app"`	Get outerHTML
`get-text [--selector s]`	`get-text --selector ".message"`	Get textContent
`get-attribute <sel> <attr>`	`get-attribute "a" "href"`	Get attribute
`get-value <sel>`	`get-value "input[name=email]"`	Get input value
`get-styles <sel>`	`get-styles ".btn" --props "color,fontSize"`	Computed styles
`query-all <sel>`	`query-all "li.item"`	Info on all matches

Interaction (Real CDP Input Events)

Command	Example	Purpose
`click <sel>`	`click "button.submit"`	Left click
`click <sel> --button right`	`click ".menu" --button right`	Right click
`click <sel> --count 2`	`click ".item" --count 2`	Double click
`hover <sel>`	`hover ".tooltip-trigger"`	Mouse hover
`type <sel> <text>`	`type "#email" "test@test.com"`	Type text
`type <sel> <text> --clear`	`type "#search" "new query" --clear`	Clear then type
`press <key>`	`press Enter`	Press key
`press <key> --modifiers "ctrl"`	`press a --modifiers "ctrl"`	Key combo
`clear <sel>`	`clear "#search"`	Clear input field
`focus <sel>`	`focus "#input"`	Focus element
`blur <sel>`	`blur "#input"`	Blur element
`select <sel> <value>`	`select "#country" "US"`	Select dropdown
`check <sel>`	`check "#agree"`	Check checkbox
`uncheck <sel>`	`uncheck "#newsletter"`	Uncheck checkbox
`scroll <sel>`	`scroll ".footer"`	Scroll to element
`scroll --x 0 --y 500`	`scroll --x 0 --y 500`	Scroll to coords
`drag <from> <to>`	`drag ".item" ".dropzone"`	Drag and drop
`upload <sel> <path>`	`upload "#file" "/tmp/doc.pdf"`	File upload

Waiting

Command	Example	Purpose
`wait <sel>`	`wait ".loaded"`	Wait for DOM element
`wait-visible <sel>`	`wait-visible ".modal"`	Wait until visible
`wait-hidden <sel>`	`wait-hidden ".spinner"`	Wait until hidden
`wait-text <text>`	`wait-text "Success"`	Wait for text on page
`wait-url <pattern>`	`wait-url "/dashboard"`	Wait for URL change
`wait-network-idle`	`wait-network-idle`	Wait for no requests
`sleep <ms>`	`sleep 1000`	Fixed delay

All wait commands accept --timeout <ms> (default 10000).

Debugging

Command	Example	Purpose
`get-console`	`get-console`	All console messages
`get-network`	`get-network`	Network requests + timing
`get-network --status 4xx`	`get-network --status error`	Filter by status (4xx, 5xx, error, or exact code)
`get-network --type xhr`	`get-network --type fetch`	Filter by initiator type
`get-cookies`	`get-cookies`	All cookies
`set-cookie <n> <v>`	`set-cookie "token" "abc" --domain localhost`	Set cookie
`clear-cookies`	`clear-cookies`	Clear all cookies

QA Inspection

Command	Example	Purpose
`get-storage`	`get-storage`	localStorage + sessionStorage combined
`get-performance`	`get-performance`	Timing, resource sizes, LCP/FID/CLS
`get-meta`	`get-meta`	Meta tags, OG, Twitter cards, structured data
`inject-axe`	`inject-axe`	Run axe-core WCAG 2.x audit, returns violations
`inject-axe --selector s`	`inject-axe --selector "main"`	Scope axe to a subtree

Common Patterns

Login Flow

node "$SCRIPTS/cdp.mjs" navigate "https://app.example.com/login"
node "$SCRIPTS/cdp.mjs" type "#email" "user@test.com" --clear
node "$SCRIPTS/cdp.mjs" type "#password" "pass123" --clear
node "$SCRIPTS/cdp.mjs" click "button[type=submit]"
node "$SCRIPTS/cdp.mjs" wait-url "/dashboard" --timeout 5000
node "$SCRIPTS/cdp.mjs" screenshot --output /tmp/dashboard.png

Responsive Verification

node "$SCRIPTS/cdp.mjs" navigate "https://example.com"
node "$SCRIPTS/cdp.mjs" emulate mobile
node "$SCRIPTS/cdp.mjs" screenshot --output /tmp/mobile.png
node "$SCRIPTS/cdp.mjs" emulate desktop
node "$SCRIPTS/cdp.mjs" screenshot --output /tmp/desktop.png

Privacy Inspection

node "$SCRIPTS/cdp.mjs" navigate "https://example.com"
node "$SCRIPTS/cdp.mjs" get-cookies
node "$SCRIPTS/cdp.mjs" get-storage
node "$SCRIPTS/cdp.mjs" evaluate "JSON.stringify([...document.querySelectorAll('script[src]')].map(s=>s.src))"

Accessibility Audit (axe-core)

node "$SCRIPTS/cdp.mjs" navigate "https://example.com"
node "$SCRIPTS/cdp.mjs" inject-axe
# Scope to main content only:
node "$SCRIPTS/cdp.mjs" inject-axe --selector "main"

Performance Snapshot

node "$SCRIPTS/cdp.mjs" navigate "https://example.com"
node "$SCRIPTS/cdp.mjs" get-performance
# Check for failed requests:
node "$SCRIPTS/cdp.mjs" get-network --status error

SEO / Meta Audit

node "$SCRIPTS/cdp.mjs" navigate "https://example.com"
node "$SCRIPTS/cdp.mjs" get-meta

Notes

Always start Chrome before running commands; stop when done
Screenshots saved as PNG — use Read tool to view them
All click/type/hover use real CDP Input events at element coordinates
Elements are automatically scrolled into view before interaction
type --clear uses Select All + Delete before typing (framework-safe)
Console/network capture is per-session (per navigate call)

Reference

See references/cdp-commands.md for extended evaluate patterns, QA-specific inspection scripts, and troubleshooting.

Browser Verify

File contents

Browser Verify

Architecture

Resolving Script Paths

Workflow

1. Start Chrome

2. Run Commands

3. Stop Chrome

Command Reference

Navigation

Visual

DOM Inspection

Interaction (Real CDP Input Events)

Waiting

Debugging

QA Inspection

Common Patterns

Login Flow

Responsive Verification

Privacy Inspection

Accessibility Audit (axe-core)

Performance Snapshot

SEO / Meta Audit

Notes

Reference

Frequently asked questions

Browser Verify

File contents

Browser Verify

Architecture

Resolving Script Paths

Workflow

1. Start Chrome

2. Run Commands

3. Stop Chrome

Command Reference

Navigation

Visual

DOM Inspection

Interaction (Real CDP Input Events)

Waiting

Debugging

QA Inspection

Common Patterns

Login Flow

Responsive Verification

Privacy Inspection

Accessibility Audit (axe-core)

Performance Snapshot

SEO / Meta Audit

Notes

Reference

Related skills

Frequently asked questions

How do I install the Browser Verify skill?

What does the Browser Verify skill do?

Is Browser Verify safe to use?

Which AI agents work with Browser Verify?

Is Browser Verify free to use?

Who published Browser Verify?