Per this thread on reddit from the creator of AoC, API requests may be completely blocked soon if they do not include an appropriate User-Agent header.
If you have any kind of tool, website, script, plugin, etc etc that sends requests to AoC, please include your contact information (like your email address) in the User-Agent header of every request. (That's the contact info of the person that maintains the code sending the automated requests, not the contact info of the person using your code.) I'm seeing a lot of abusive traffic from tools that just identify themselves as stuff like python-requests/x.y.z, so I'll probably be blocking User Agents like those entirely soon. Even better would be to also include a URL where I can see the tool, too; a good User Agent would be something like github.com/topaz/name-of-tool by yourname@example.com.
Per this thread on reddit from the creator of AoC, API requests may be completely blocked soon if they do not include an appropriate User-Agent header.