User blog comment:DaNASCAT/Technical Update: June 20, 2016/@comment-24473195-20160621194616/@comment-5275700-20160622162537

There is documentation, but it's currently under review so I won't be providing a link at this time. I have withdrawn the "Helios API" part of my earlier statement. Feel free to contact us if you're interested in trying out something specific in the near future and we can talk more.

To reinforce the answer to the original question, there are no changes to the API login process.