Is it possible to query the API so that it returns older versions of content? For example, I want to fetch a blog post as it appeared 2 weeks ago, without subsequent edits?
Unfortunately we don’t support that as an API call. What you can do is fetch a record and then browse through the revisions, like what we do on the CMS.
This is something though that we don’t officially support via our clients. If you want to do that you can inspect the calls that we do from our CMS and replicate them, no problem!