A `tmdb` mapping in the config is optional but highly reccomended. It is also required for Sonarr or Radarr to function. Here's the full set of attributes you can set:
Configuring TheMovieDb.org API is optional but highly reccomended and is required for Sonarr or Radarr to function.
A `tmdb` mapping is in the root of the config file.
Below is a plex mapping example and the full set of attributes: