How can I get a username from the TikTok API

Question

I have searched for many days now, but didn't found a field in the TikTok API where I can get the username of the user that has connected his TikTok account with my website. I want to let user log in with their TikTok account to let them link it from my website to TikTok and want to display their "@" name (not the display name. I can only get their IDs etc. but no their username. If anyone can help I'd be very happy!

I searched on many forums for this but didn't sound any solution. I'm expecting to be able to send a request to the official TikTok API which then replies the username of someones ID or of someones Token I own.

Answer 1

On Get User Info API route you can put username on fields arguments like this :

https://open.tiktokapis.com/v2/user/info/?fields=profile_deep_link,username

This field username is not documented (maybe a mistake in TikTok side) but it work well for me, you can see the screenshot :