How can I get the articles of a topic through the Khan Academy API? I can see how it works with exercises and videos, but what about articles?
For example the query
http://www.khanacademy.org/api/v1/topic/beginners-art-history
returns the contents of the page
https://www.khanacademy.org/humanities/art-history-basics/beginners-art-history/
How can I get the content of the article "A brief history of Western culture" inside it?
The correct API call for an article is:
http://www.khanacademy.org/api/v1/articles/%s
In the JSON returned by your topic API call, use "id" in the "child_data" array for the %s above (the articles have the "kind" entries with value "article".)
(You can also use "id" in the "child_data" array to look for the corresponding "internal_id" in the "children" array to get some basic information about the article, e.g. title and description.)
So for your topic call,
http://www.khanacademy.org/api/v1/topic/beginners-art-history
you get the id "1314267931" and then call