This is a testbed for web crawling using firebase functions. It only works for authenticated users.
Note that when the metadata of your returned request says installed_browser: true
then the request was much longer than it will be in production. Make the
same request a second time immediately after and you will see the speed we
can achieve in production where installed_browser: false
The url will be scraped by a browser running on a Google Cloud Function, and that browser's request is routed through a global IP proxy network so that you can scrape many websites without getting blocked by the website.
If you just want to try it out, you could find a link to a current listing in Berlin on this link
Please make sure you select a WG zimmer and not for example a 1-zimmer-wohnung, as those can't be scraped yet