Browser-Use

Browser-Use is an open-source framework that makes websites accessible to AI models. Connect it to Lightcone’s cloud computers for scalable, stealth-enabled web automation.

Install

pip install browser-use tzafon playwright
playwright install chromium

Example

import os
from browser_use import Agent
from langchain_openai import ChatOpenAI
from tzafon import Lightcone
from playwright.async_api import async_playwright

async def main():
    # Create a Lightcone browser session
    client = Lightcone()
    session = client.computers.create(kind="browser")

    # Build the full CDP URL from the relative endpoint path
    cdp_path = session.endpoints.get("cdp")
    cdp_url = f"https://api.tzafon.ai{cdp_path}"

    # Connect Playwright to the Lightcone browser
    pw = await async_playwright().start()
    browser = await pw.chromium.connect_over_cdp(cdp_url, headers={
        "Authorization": f"Bearer {os.environ['TZAFON_API_KEY']}",
    })

    # Use Lightcone's own model via its OpenAI-compatible API
    llm = ChatOpenAI(
        model="tzafon.northstar-cua-fast",
        base_url="https://api.tzafon.ai/v1",
        api_key=os.environ["TZAFON_API_KEY"],
    )

    # Create a Browser-Use agent on the remote browser
    agent = Agent(
        task="Search for 'machine learning' on Wikipedia and summarize the first paragraph",
        llm=llm,
        browser=browser,
    )

    result = await agent.run()
    print(result)

    await browser.close()
    await pw.stop()
    client.computers.delete(session.id)

import asyncio
asyncio.run(main())

Why use Lightcone with Browser-Use?

By default, Browser-Use runs a local Chromium browser. Connecting it to Lightcone gives you:

• Cloud execution — No local browser needed; scale to many concurrent tasks
• Stealth mode — Lightcone’s anti-detection features help access sites that block automation
• Residential proxies — Rotate IPs to avoid rate limiting
• Session persistence — Save and restore login state across runs

How it works

Browser-Use uses Playwright internally. Lightcone exposes a Chrome DevTools Protocol (CDP) endpoint for each computer session. You connect Playwright to Lightcone’s CDP URL instead of launching a local browser, and Browser-Use operates on the remote session transparently.

Resources

• Browser-Use documentation
• Browser-Use GitHub
• Lightcone Playwright integration

See also

• Playwright — direct CDP connection without Browser-Use
• Run a task — use Lightcone’s built-in Northstar as an alternative
• Legacy software — automate enterprise applications