See here https://developers.themoviedb.org/3/search/search-people

Using Api KEY to search for an actor, for example Orson Welles,
https://api.themoviedb.org/3/search/person?api_key=[MY_KEY]&language=en-US&query=Orson%20Welles&page=1

https://api.themoviedb.org/3/search/person?api_key=[MY_KEY]&language=en-US&query=Orson%20Welles&page=1

you will receive the following answer, which includes the actor ID. In this case 40.

page    1
total_results   1
total_pages 1
results 
0   
popularity  2.01
id  40
profile_path    "/k7a0gp3HKWT5uBmfirM74vackiV.jpg"
name    "Orson Welles"
known_for   […]
adult   false

You also receive the profile photo path. "/k7a0gp3HKWT5uBmfirM74vackiV.jpg"

See https://image.tmdb.org/t/p/original/k7a0gp3HKWT5uBmfirM74vackiV.jpg

And the movies he is best known for.
I did not show here but ...
Take a test. Use your KEY.

Thank you very much for the information ticao2

I’ll only add, that depending on your use case you might also appreciate to be able to sync/import all of the person IDs at once. To do that, you can use our daily ID exports.