> ## Documentation Index
> Fetch the complete documentation index at: https://tbd-6fc993ce-mintlify-add-deploy-button-docs-27400.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Stealth Mode

Kernel browsers can be configured to `stealth` mode, which automatically adds our recommended proxy to your browser instances. It also adds a `reCAPTCHA solver` to the browser, so it automatically solves [reCAPTCHAs](https://www.google.com/recaptcha/api2/demo) on your behalf.

To turn on stealth mode, set its flag when instantiating Kernel browsers:

<CodeGroup>
  ```typescript Typescript/Javascript theme={null}
  import Kernel from '@onkernel/sdk';

  const kernel = new Kernel();

  const kernelBrowser = await kernel.browsers.create({
    stealth: true,
  });
  ```

  ```python Python theme={null}
  from kernel import Kernel

  kernel = Kernel()

  kernel_browser = kernel.browsers.create(
      stealth=True,
  )
  ```
</CodeGroup>

If you're looking for proxy-level configuration with Kernel browsers, see [Proxies](/proxies/overview).

## CAPTCHA Handling Behavior

Below are tips for working with Kernel's Stealth Mode auto-CAPTCHA solver across different challenge types and automation frameworks.

### Anthropic Computer Use

Anthropic Computer Use stops when it encounters a CAPTCHA. Use Kernel's auto-CAPTCHA solver by adding this to your prompt:

`"If you see a CAPTCHA or similar test, just wait for it to get solved automatically by the browser."`

### Cloudflare Challenge

When encountering a Cloudflare challenge, our auto-CAPTCHA solver will attempt to handle it. Once the "Ready" message appears on the screen, continue with your intended browser actions (e.g., entering credentials and submitting a login attempt).

<Info>
  After the "Ready" message appears, don't click the Cloudflare CAPTCHA checkbox — this can interfere with the solver.
</Info>