@rysson said:
List of all languages in given language (in user locale)
Discover API gets with_original_language parameter.
I want to get list of languages, to show user to choose.
A see https://api.themoviedb.org/3/configuration/languages but it returns only English and itself name.
It doesn't take language= parameter.
How to get that info (languages with names in user GUI locale)?

As far as I know, we don't have it in the API.
You would have to resolve it on your side using the ISO 639-1 Code and adding the language name in your language.

45  
iso_639_1   "hi"
english_name    "Hindi"
name    "हिन्दी"
46  
iso_639_1   "pt"
english_name    "Portuguese"
name    "Português"

I don't even see anything similar in Trello lists.
https://trello.com/b/bVlsp6wz/api?filter=lang
https://trello.com/b/k34aFUme/web?filter=lang

Yes, I do it know.
I see translated languages on the web site. It's why I'm searching native_name in the languages API.

Should I add a card in trello?

@rysson said:
Should I add a card in trello?

I don't think you can add, you can only vote.