Webinar Registration Link using The API

How can we get the registration link of the Webinar using the API ?
I tried a few endpoints and I didn’t find it there. For example:

Thanks For Helping,

Hi @liran I dont think we send the registration link via API. You can always add a registrant via the add registrants API

Ok I will try.

Do you know How can I extract the number of registrants per upcoming webinar ?

I tried : GET /webinars/{webinarId}/registrants
The webninarId is numeric BUT the endpoint for upcoming events returns a string for an Id:
GET /report/upcoming_events