Canvas on Amazon Alexa

For the past month or so, I have been developing this Amazon Alexa to interface with Canvas API.  The app can retrieve grading, assignment and announcement information from a student perspective...

Context_codes

Context_codes is required for announcements in the API.  Where can I find context_codes?

Observees' Grades

How can I view observee's grades through the API?  Please advise.  

Retrieve students' name associated to courses as observer

When I tried to retrieve courses information as an observer using the api, it didn't provide the students' names.  It provided associated_user_id but observer had no permission to retrieve the a...