clientless - sso with machine certificate

hi out there

I have build my a server with the machine-certificate agent but since this injects some JavaScript code to the client I need to do it client-less Is there a sample somewhere which shows how I request a given certificate from the machine store? - this Little sample here shows fine how we can run clientless https://devcentral.f5.com/questions/clientless-sso but how do we request a x509 certificate? best regards /ti