Password protected and OAuth

Site URL: https://goexp.ss.gologic.ca

Hi, 

Im trying to protect content from being public and accessible only for our organisation.

I have tried member space but was unable to create membres manually. 

I found out that with a password protected site this could be done by having OAuth organisation authentication. After a successufull OAuth authentication we could authenticate with password via the api and redirect to hour squarespace site. 

I found out that this is done with cookie: crumb and Locked

Is there a way to be able to bypass password page with parameters instead of cookie? Cookies are associated domain and therefore impossible to mix with our home made auth application.

Is there a feature that enable us to do something like that: 

http://[square space domain]?crum=[crumb]&Locked=[Locked]

Thanks