This is very much within my areas of interest, but signing an NDA in this area is a lot to ask. I'm hoping someone that gets shown the NDA, but doesn't sign it,

This is very much within my areas of interest, but signing an NDA in this area is a lot to ask. I'm hoping someone that gets shown the NDA, but doesn't sign it, would be willing to post more details. Such as: does the NDA just cover the questions given or the entire experience of interfacing with the api? And how long does it last?