Is there an API to read Microsoft forms data

There now appears to be an API for getting some information from Microsoft Forms at https://forms.office.com/formapi/api. I'm not sure when it was released, and I'm having trouble finding documentation on it, but I can at least pull some information in my browser this way. After going to https://forms.office.com/ to login (which sets a token in the browser), I can then browse to https://forms.office.com/formapi/api to get a list of operations or to a specific operation like https://forms.office.com/formapi/api/forms to get a list of my Forms.