API Basic Auth error 403

Kirby 3 Questions 🤔
1

hey guys,
I am trying to access the kirby REST API from another external site - have basicAuth set to true in config. With the following example https://username:password@example.com I always get the error code 403 - even though the account has admin rights that I use for the API query.

Can I even access the API this way, or do I need an extra script?

Thanks in advance