Is it possible to call API's from the provided url using curl

i hv to call API's from a given url in my code. I try to call url using curl. now i want to use APi's provided by this url in my code

From stackoverflow

• A web service API typically just communicates over the HTTP protocol. You send some specific requests and receive answers in a certain format, the same thing your browser does with websites. cURL is a great tool to do so.

  The specifics will really depend on the API in question, you should study whatever documentation they provide for it.

• If you are working with APIS that are based on xml and support the soap protocol a better idea will be just to use soap then curl (less code needed)