GNAP defines a mechanism for delegating authorization to a piece of software, and conveying the results and artifacts of that delegation to the software. This delegation can include access to a set of APIs as well as subject information passed directly to the software.

Summary:
I am not an expert in this area so have tried to provide a review as best I can.

I believe draft is well written and ready for publication.

Major issues:
None

Minor Issues:
None 

Nits:
None