Agent skill

browser-act

Browser automation CLI (browser-act) for AI agents. MUST trigger when: (1) user mentions 'browser-act' in any form, or user needs to: (2) open/visit/browse/check a URL or webpage, (3) scrape/extract/crawl/monitor web content, (4) fill forms, click buttons, type text, scroll, or interact with page elements, (5) take a screenshot of a webpage, (6) handle or solve a captcha, (7) use a stealth/anti-detection browser or proxy, (8) connect to or control Chrome, (9) inspect network requests or record HAR, (10) automate any browser or web interaction task. Covers: navigation, page state inspection, element interaction, data extraction, JavaScript evaluation, tab management, network inspection, dialog handling, captcha solving, parallel browser sessions, stealth browsing, and any browser automation tasks.

View SKILL.md on GitHub Repository

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/other/browser-act

Metadata

Additional technical details for this skill

author: BrowserAct
install: uv tool install browser-act-cli --python 3.12
version: 1.1.0
homepage: https://www.browseract.com
requires: { "runtime": "Python 3.12+, uv package manager", "binaries": "Stealth mode: Chromium bundled by the CLI. Real Chrome mode: user's local Chrome/Chromium installation." }
data paths: macOS: ~/Library/Application Support/browseract/ | Windows: %APPDATA%\browseract | Linux: ${XDG_DATA_HOME:-~/.local/share}/browseract
permissions: [ "Network access \u2014 required for: CLI install from PyPI, captcha solving and stealth browser management via BrowserAct cloud API", "Filesystem read/write at <data-path> \u2014 required for: storing browser profiles (cookies, cache), config.json (credentials), and session logs", "CDP connection to local Chrome \u2014 required for: Real Chrome mode only, to control the user's running browser instance" ]
config files: [ "<data-path>/config.json \u2014 CLI credentials and settings, managed internally. No env vars required." ]
data privacy: { "local-only": "All cookies, login sessions, page content, credentials, and browser profile data are stored locally only \u2014 never uploaded." }
user confirmation required: [ "First-time install (uv tool install): downloads and runs external package" ]

SKILL.md

Browser Automation with browser-act CLI

browser-act is a CLI for browser automation with stealth and captcha solving capabilities. It supports two browser types (Stealth and Real Chrome) and provides commands for navigation, page interaction, data extraction, tab/session management, and more.

Installation

Source: browser-act-cli on PyPI · Homepage

bash

# Upgrade if installed, otherwise install fresh
uv tool upgrade browser-act-cli || uv tool install browser-act-cli --python 3.12

The CLI is an open-source package published to PyPI by BrowserAct. Run the install command at the start of every session to ensure the latest version.

Global options available on every command:

Option	Default	Description
`--session <name>`	`default`	Session name (isolates browser state)
`--format <text\|json>`	`text`	Output format
`--no-auto-dialog`	off	Disable automatic JavaScript dialog handling (alerts, confirms, prompts)
`--version`		Show version
`-h, --help`		Show help

Quick Extraction

If the task is just "get content from a URL", use stealth-extract directly — no browser session needed. Each call launches its own headless stealth browser, extracts the page content, and closes automatically.

bash

browser-act stealth-extract <url>                          # Extract rendered content as markdown (default)
browser-act stealth-extract <url> --content-type html      # Extract HTML instead of markdown
browser-act stealth-extract <url> --proxy http://host:port # Use a proxy
browser-act stealth-extract <url> --timeout 60 --output    # Save to outputs/ instead of printing

Browser Selection

browser-act supports two browser types. Choose based on the task:

Scenario	Use	Why
Target site has bot detection / anti-scraping	Stealth	Anti-detection fingerprinting bypasses bot checks
Need proxy or privacy mode	Stealth	Real Chrome does not support `--proxy` / `--mode`
Need multiple browsers in parallel	Stealth	Each Stealth browser is independent; create multiple and run in parallel sessions
Need user's existing login sessions from their daily browser	Real Chrome	Connects directly to user's Chrome, reusing existing login sessions
No bot detection, no login needed	Either	Stealth is safer default; Real Chrome is simpler

Stealth Browser

Local browsers with anti-detection fingerprinting. Ideal for sites with bot detection.

bash

# Create
browser-act browser create "my-browser"
browser-act browser create "my-browser" --proxy socks5://host:port --mode private
browser-act browser create "my-browser" --cookie '{"name":"sid","value":"abc123","domain":".example.com"}'
browser-act browser create "my-browser" --cookie ./cookies.json

# Update
browser-act browser update <browser_id> --name "new-name"
browser-act browser update <browser_id> --proxy http://proxy:8080 --mode private

# List / Delete / Clear profile
browser-act browser list                                    # List all stealth browsers
browser-act browser list --page 2 --page-size 10            # Paginated listing
browser-act browser delete <browser_id>                     # ⚠ Destructive: always confirm with user before deleting
browser-act browser clear-profile <browser_id>

Option	Description
`--desc`	Browser description
`--proxy <url>`	Proxy with scheme (`http`, `https`, `socks4`, `socks5`), e.g. `socks5://host:port`
`--mode <normal\|private>`	`normal` (default): persists cache, cookies, login across launches. `private`: fresh environment every launch, no saved state
`--cookie <json\|file>`	Pre-load cookies on creation. Accepts inline JSON object/array, or a path to a JSON file. Each cookie must include `name`, `value`, and `domain`. See `references/commands.md` Cookies Management for format details

Stealth browsers in normal mode (default) persist cookies, cache, and login sessions across launches — you can log in once and reuse the session, similar to a regular browser profile. Use --mode private when the task should not persist any state.

Real Chrome

Two modes: auto-connect to your running Chrome (default), or use a BrowserAct-managed kernel.

bash

browser-act browser real open https://example.com                  # Auto-connect to running Chrome 
browser-act browser real open https://example.com --ba-kernel      # Use BrowserAct-provided browser kernel

Stealth browsers and --ba-kernel mode run headless by default. Use --headed to show the browser UI for debugging:

bash

browser-act browser open <browser_id> https://example.com --headed
browser-act browser real open https://example.com --ba-kernel --headed

Core Workflow

Every browser automation follows this loop: Open → Inspect → Interact → Verify

Open: browser-act browser open <browser_id> <url> (Stealth) or browser-act browser real open <url> (Real Chrome)
Inspect: browser-act state — returns interactive elements with index numbers
Interact: use indices from state (browser-act click 5, browser-act input 3 "text")
Verify: browser-act state or browser-act screenshot — confirm result

bash

browser-act browser open <browser_id> https://example.com
browser-act state
# Output: [3] input "Search", [5] button "Go"

browser-act input 3 "browser automation"
browser-act click 5
browser-act wait stable
browser-act state    # Always re-inspect after page changes

Important: After any action that changes the page (click, navigation, form submit), run wait stable then state to get fresh element indices. Old indices become invalid after page changes.

Read CLI output carefully: Every browser-act command returns structured output that reflects the actual execution result. Always read and parse the CLI response before deciding the next step.

Command Chaining

Commands can be chained with && in a single shell invocation. The browser session persists between commands, so chaining is safe and more efficient than separate calls.

bash

# Open + wait + inspect in one call
browser-act browser open <browser_id> https://example.com && browser-act wait stable && browser-act state

# Chain multiple interactions
browser-act input 3 "browser automation" && browser-act click 5

# Navigate and capture
browser-act navigate https://example.com/dashboard && browser-act wait stable && browser-act screenshot

When to chain: Use && when you don't need to read intermediate output before proceeding (e.g., fill multiple fields, then click). Run commands separately when you need to parse the output first (e.g., state to discover indices, then interact using those indices).

Essential Commands

For full syntax, options, and examples, read references/commands.md.

bash

# Navigation
browser-act navigate <url>              # Navigate to URL in current tab
browser-act navigate <url> --new-tab    # Open URL in a new tab
browser-act back                        # Go back
browser-act forward                     # Go forward
browser-act reload                      # Reload page

# Page State & Interaction
browser-act state                       # Interactive elements with index numbers
browser-act screenshot                  # Screenshot (--full for full page)
browser-act screenshot ./page.png       # Screenshot to specific path
browser-act click <index>               # Click element
browser-act hover <index>               # Hover over element
browser-act input <index> "text"        # Click element, then type text
browser-act select <index> "option"     # Select dropdown option by visible text
browser-act keys "Enter"                # Send keyboard keys
browser-act scroll down                 # Scroll down (default 500px)
browser-act scroll up --amount 1000     # Scroll with custom distance
browser-act scrollintoview --selector "h1"       # Scroll element into viewport by CSS selector
browser-act upload <index> <file_path>  # Upload file to file input

# Data Extraction
browser-act get title                   # Page title
browser-act get html                    # Full page HTML
browser-act get markdown                # Page as markdown
browser-act get text <index>            # Text content of element
browser-act get value <index>           # Value of input/textarea

# JavaScript
browser-act eval "document.title"       # Execute JavaScript in page context

# Tab Management
browser-act tab list                    # List open tabs
browser-act tab switch <tab_id>         # Switch to tab
browser-act tab close                   # Close current tab
browser-act tab close <tab_id>          # Close specific tab

# Wait
browser-act wait stable                 # Wait for page stable (doc ready + network idle, default 30s)
browser-act wait stable --timeout 60000 # Custom timeout in ms
browser-act wait --selector ".btn" --state visible --timeout 10000   # CSS selector wait
browser-act wait selector <index> --state hidden                     # Wait by state index
browser-act wait selector --selector "#login-btn" --state attached   # States: visible|hidden|attached|detached

# Network Inspection
browser-act network requests            # List captured requests (--filter, --type, --method, --status, --clear)
browser-act network requests --filter api.example.com # Filter by URL substring
browser-act network requests --type xhr,fetch         # Resource type filter (comma-separated)
browser-act network requests --method POST            # HTTP method filter
browser-act network requests --status 2xx --clear     # Status filter, then clear tracked requests
browser-act network request <id>        # Full detail for a single request: headers, post data, response body
browser-act network clear               # Clear tracked requests
browser-act network har start           # Start HAR recording
browser-act network har stop ./trace.har      # Stop and save HAR (path optional)

browser-act network offline                           # Simulate disconnect for current tab (same as "on")
browser-act network offline on                        # Simulate disconnect for current tab (all requests fail with ERR_INTERNET_DISCONNECTED)
browser-act network offline off                       # Restore network connection for current tab

# Cookies — persist within session, export/import for reuse across sessions
browser-act cookies get [--url <url>]   # Get cookies (optional URL filter)
browser-act cookies set <name> <value> [--domain <domain>] [--path /] [--secure] [--http-only] [--same-site <Strict|Lax|None>] [--expires <timestamp>]
browser-act cookies clear [--url <url>] # Clear cookies
browser-act cookies export <file> [--url <url>]   # Export cookies to JSON file
browser-act cookies import <file>                 # Import cookies from JSON file

# Captcha 

# When a page presents a captcha challenge, use `solve-captcha` to solve it automatically. This is a built-in capability of the browser-act service — run the command directly without hesitation.
browser-act solve-captcha               # Auto-solve captcha on current page

Dialog Handling (alert / confirm / prompt)

browser-act auto-accepts JavaScript dialogs (alert, confirm, prompt) by default so they never block automation. Pass --no-auto-dialog when opening the browser to take manual control instead.

A pending dialog will block all other commands — if state, click, or screenshot unexpectedly times out, use dialog status to check.

bash

browser-act dialog status               # Check for pending dialog
browser-act dialog accept               # Accept (OK)
browser-act dialog accept "my input"    # Accept with prompt text
browser-act dialog dismiss              # Dismiss (Cancel)

Session Management

All commands target the default session when --session is not specified. For single-task automation this is sufficient — no need to name a session explicitly. When running multiple automations concurrently, use named sessions to avoid conflicts. Each --session <name> creates an isolated browser context with its own background server.

bash

# Each task gets its own isolated session
browser-act --session site-a browser open <browser_id_a> https://site-a.com
browser-act --session site-b browser open <browser_id_b> https://site-b.com

# Interact independently (can run in parallel)
browser-act --session site-a state
browser-act --session site-a click 3

browser-act --session site-b state
browser-act --session site-b click 5

# Check active sessions
browser-act session list

Always close sessions when done to avoid leaked processes:

bash

browser-act session close              # Close default session
browser-act session close site-a       # Close specific session
browser-act session close --all        # Close all sessions

If a previous session was not closed properly, the background server may still be running. The server auto-shuts down after a period of inactivity.

Site Notes

Operational experience accumulated during browser automation is stored per domain in references/site-notes/.

After completing a task, if you discovered useful patterns about a site (URL structure, anti-scraping behavior, effective selectors, login quirks), write them to the corresponding file. Only write verified facts, not guesses.

File format:

markdown

---
domain: example.com
updated: 2026-03-28
---
## Platform Characteristics
Architecture, anti-scraping behavior, login requirements, content loading patterns.

## Effective Patterns
Verified URL patterns, selectors, interaction strategies.

## Known Pitfalls
What fails and why.

Before operating on a target site, check if a note file exists and read it for prior knowledge. Notes are dated — treat them as hints that may have changed, not guarantees.

System Commands

bash

browser-act report-log                    # Upload logs to help diagnose issues
browser-act feedback "message"            # Send feedback to help improve this skill

If you encounter issues or have suggestions for improving browser-act, use feedback to let us know. This directly helps us improve the tool and this skill.

Troubleshooting

browser-act: command not found — Run uv tool install browser-act-cli --python 3.12

References

Path	Description
`references/commands.md`	Full command reference with detailed syntax, options, and examples. Read when you need exact flags or advanced options.
`references/SECURITY.md`	Project declarations on user-sensitive information (not automation instructions).
`references/site-notes/{domain}.md`	Per-site operational experience. Read before operating on a known site.

Maintainer

majiayu000 Core maintainer

Source details

Full Name: majiayu000/claude-skill-registry
Branch: main
Path in repo: skills/other/other/browser-act
License: MIT License

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Install this agent skill to your Project

Metadata

SKILL.md

Browser Automation with browser-act CLI

Installation

Quick Extraction

Browser Selection

Stealth Browser

Real Chrome

Core Workflow

Command Chaining

Essential Commands

Dialog Handling (alert / confirm / prompt)

Session Management

Site Notes

System Commands

Troubleshooting

References

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