The way I'm currently getting the directors and "top cast" for a given movie is through the https://developers.themoviedb.org/3/movies/get-movie-credits endpoint. I'm getting the first 10 itens of the array cast and all the crew such that crew[job] == 'Director'. This is very inefficient when you do it for a lot of movies because the credits response can be very long (100 KB+).