1. The response to /release/mbid is only a 307 temp. redirect if the MBID is a valid and exists, otherwise coverartarchive.org is not left. I assume it's the same for the other 40x and 50x responses. Also, a good /release/mbid will eventually result in a HTTP 200 even if the immediate response is a 307. I'm seeing getting 307 to archive.org which gives a 302 to their file server which then gives a 200, and I'm just not sure how to note this in the API document.
2. I updated the last JSON example on the API page. Doesn't seem like it's in our transclusion table, so it should show up by itself, though it may have been cached as I'm not seeing it myself.
You're also welcome to edit https://wiki.musicbrainz.org/Cover_Art_Archive/API to improve it yourself.
Improvement
Normal
1. The response to /release/mbid is only a 307 temp. redirect if the MBID is a valid and exists, otherwise coverartarchive.org is not left. I assume it's the same for the other 40x and 50x responses. Also, a good /release/mbid will eventually result in a HTTP 200 even if the immediate response is a 307. I'm seeing getting 307 to archive.org which gives a 302 to their file server which then gives a 200, and I'm just not sure how to note this in the API document.
2. I updated the last JSON example on the API page. Doesn't seem like it's in our transclusion table, so it should show up by itself, though it may have been cached as I'm not seeing it myself.
You're also welcome to edit https://wiki.musicbrainz.org/Cover_Art_Archive/API to improve it yourself.