SSO without ui

Hi Experts!

First of all, I'll just state that I'm pretty new to SAP and am not familliar with many of the basic terms so please go easy on me ;)

I have created an odata service through the gateway, what I now need is to use it via an external program (Access the API via python in my case).

My problem? I need to generate a SSO with the user who is accessing the API in order to verify their authentications. From what I've gathered, this is possible through the ui: When accesing a webpage, a popup to select an ssl certificate will appear. After I select one, I am required to enter my worker card password and a connection is magically formed!

Is there possibly a way to do this without a browser?

Thanks!