I went to get an API key for my StackOverflow C++ wrapper, and discovered that this involves registering an "application".
Does the wrapper count as an app?
A library should take an app key, not have an app key. Don't register it.
Also, make absolutely sure your wrapper demands an app key at initialization. You don't want a user locked into the
If libraries had keys an application abusively using your library (through no fault of yours) could get every application that uses your library blocked.