I'd like to know as well. I just tried but I can't get it to work following the documentation.

Edit: It seems that the request must be made over HTTPS.

Yeah, looks like right now they just forward http[s] requests via nginx to your "terminal" so SSH or any other raw, non-HTTP connection won't work.

We are going to have SSH/SFTP access publicly soon. Email us at support@cloudlabs.io if you need access now.