For a project of mine, I need to know if I need to keep the API key secret or not. If I do, I'm not sure how I'm going to effect its protection, as Emacs Lisp files are stored in plain text (and byte-compiled files don't attempt/need to hide strings). Obviously, I want to avoid the key I was given for the mode to be abused by one and then suspended for everyone.
By API Key limit 10k is Per IP Address or Globally?, I'm assuming that the key will not drain globally for each individual use (per IP), but I can't assume the same principle holds for abuse.