Getting a list of tournament "url-ID"s

How can I get a list of Tournaments from the API?
One can get the information from a particular tournament using https://api.chess.com/pub/tournament/{url-ID},
The documentation says that the "url-ID" is the same as found in the URL for the tournament's web page on www.chess.com. but the whole point of the API is to have direct calls instead of parsing the website. How do one get a list of valid tournament "url-ID"? or even better a filtered list of "url-ID"s.

It doesn't exist as far as I can see. You might submit a request for such an endpoint to be provided in future?

Thanks for the reply.

How do I find out the formal procedure to submit such requests? 

Best is to use the Help -> Make a Suggestion.