Support stealth CDP with Selenium Grid via 4.41 NodeSessionFactoryProvider?

[StKob]

Hi, I know UC Mode / CDP Mode is currently not compatible with Selenium Grid / Remote WebDriver.

I saw Selenium Grid 4.41 added NodeSessionFactoryProvider - a SPI to plug custom session factories via --ext without patching selenium-server.jar. Kubernetes Dynamic Grid is built on it.

Would that make it possible to support stealth CDP on the Grid? I.e. a custom factory / node image that launches Chrome the stealth way on the node, and lets SeleniumBase drive it via CDP?

My use case is simply: I want SB(uc=True) + activate_cdp_mode() / sb_cdp behavior, but distributed on a Grid (Docker / K8s) instead of local-only.

Thanks!

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Refs:

• https://www.selenium.dev/blog/2026/selenium-grid-4-41-deep-dive/
• https://github.com/SeleniumHQ/selenium/blob/selenium-4.41.0/java/src/org/openqa/selenium/grid/node/NodeSessionFactoryProvider.java

[mdmintz]

You can do stealthy multithreading with CDP Mode without a Selenium Grid via ThreadPoolExecutor:

from concurrent.futures import ThreadPoolExecutor
from random import randint
from seleniumbase import decorators
from seleniumbase import sb_cdp

def main(url):
    sb = sb_cdp.Chrome()
    sb.goto(url)
    sb.set_window_rect(randint(4, 680), randint(8, 380), 840, 520)
    sb.sleep(1.2)
    sb.solve_captcha()
    sb.sleep(2.2)
    sb.quit()

if __name__ == "__main__":
    urls = ["https://www.bing.com/turing/captcha/challenge" for i in range(4)]
    with decorators.print_runtime("raw_multi_captcha.py"):
        with ThreadPoolExecutor(max_workers=len(urls)) as executor:
            for url in urls:
                executor.submit(main, url)

This is the recommended way to handle stealthy multithreading.

There's no need for the Selenium Grid, which will take away stealth because it uses WebDriver.

[StKob]

I do understand that its possible without Selenium Grid. In this case Selenium Grid is already deployed and different scripts are relying on it and its session/concurrency management. Also I believe using NodeSessionFactoryProvider would allow for Selenium Base to launch it in CDP Mode instead of WebDriver.