How to allow a user to add their friends from their Facebook account through the API?
Hello, thanks for reaching us! For connecting external APIs please refer to the following page for integrating API in bubble, https://manual.bubble.io/building-plugins/adding-api-connections.html .
On the facebook end please refer to the following link
https://developers.facebook.com/docs/graph-api/reference/friend-list/
Best regards, Vitalie.