Just got an email about this today, as I had an API key:

Your Goodreads developer API key has been deactivated

Goodreads has deactivated the Goodreads developer API key associated with your Goodreads account as it has not been used in more than 30 days. As of December 8th 2020, Goodreads will no longer issue new developer keys for our public developer API and plans to retire these tools.

If you wish to provide feedback on this change, please complete the developer API survey here.

If you have additional questions, please review Goodreads help here.

Link to developer discussion: https://www.goodreads.com/topic/show/21788520-api-deprecatio...