Browser Fingerprinting

Fingerprint Browser Environment Overview

To handle fingerprint browser and automation detection on modern websites, the platform automatically configures and hosts an isolated browser fingerprint environment during script execution.

This environment is used for operations that require a real browser context, such as JavaScript rendering, page interaction, login sessions, and authenticated access.

Developers don’t need to deploy, purchase, or manage fingerprint browser instances.

Configuration

Parameter	Value
Browser Type	Chromium (platform-hosted remote instance)
Connection Method	`WebSocket`
Authentication Variable	`PROXY_AUTH`
Authentication Format	`username:password`
Fingerprint Browser Endpoint	`ChromeWs`
Camoufox Endpoint	`CamoufoxDomain`
Lightpanda Endpoint	`LightpandaDomain`
Pricing	Built-in, no additional cost

Python Example

import os
from playwright.async_api import async_playwright

async def main():
    # Get browser authentication info
    auth = os.environ.get("PROXY_AUTH")

    # Remote fingerprint browser WebSocket address
    chrome_ws = os.environ.get("ChromeWs") or "chrome-ws-inner.coreclaw.com"

    browser_url = f'ws://{auth}@{chrome_ws}'

    async with async_playwright() as p:
        # Connect to remote fingerprint browser
        browser = await p.chromium.connect_over_cdp(browser_url)
        page = await browser.new_page()

        # Navigate to page
        await page.goto('https://ipinfo.io/ip')
        await page.wait_for_load_state('networkidle')

        # Get content
        ip_text = await page.text_content('body')
        print(f"Current exit IP: {ip_text.strip()}")

        await browser.close()

asyncio.run(main())

Node.js Example

const { chromium } = require('playwright')

;(async () => {
    // Get browser authentication info
    const auth = process.env.PROXY_AUTH

    // Remote fingerprint browser WebSocket address
    const chromeWs = process.env.ChromeWs || 'chrome-ws-inner.coreclaw.com'
    const browserUrl = `ws://${auth}@${chromeWs}`

    // Connect to remote fingerprint browser
    const browser = await chromium.connectOverCDP(browserUrl)
    const page = await browser.newPage()

    // Navigate to page
    await page.goto('https://ipinfo.io/ip')
    await page.waitForLoadState('networkidle')

    // Get content
    const ipText = await page.textContent('body')
    console.log('Current exit IP:', ipText.trim())

    await browser.close()
})()

Browser Backends

CoreClaw can expose more than one remote browser backend depending on the Worker runtime and feature configuration:

Use ChromeWs for the standard Chromium fingerprint browser.
Use CamoufoxDomain for Camoufox sessions driven through Playwright Firefox.
Use LightpandaDomain for Lightpanda CDP sessions.