How to retrieve JSON search queries from ROBLOX's Catalog API?

I've been trying to retrieve item data from ROBLOX's Catalog Api.

For example, if I wanted to find a Model with the search querie "TEST", I would do "https://search.roblox.com/catalog/json?CatalogContext=2&Category=6&Keyword=TEST".

However, as I soon was to read, HttpService "is not allowed to send requests to any of the Roblox websites".

However, I have seen this happening before in-game such as with when searching for audio...

How would I be able to bypass this? Proxy it through another server? Am I using the wrong API? Any help would be appreciated.

Kind regards, Rodrigo455