You can just point it at a webserver and ask it a question like "Summarize the content at [URL]" with a sufficiently unique URL that no one would hit, maybe with an UUID. This is also explored on the very article itself.

In my testing they're using crawlers on AWS and they do not parse Javascript or CSS, so it is sufficient to serve some kind of interstitial challenge page like the one on Cloudflare, or you can build your own.