Where do I get the list of supported languages?

[Nakilon]

I'm not going to run/host the service -- I'm making a tool for a public pastebin service API.
But where can I see the list of supported languages? I'm aware of two pastebins:

https://paste.the-compiler.org/api/langs
https://paste.centos.org/api/langs

but both return: "Invalid API key"

[Nakilon]

For example, I've found here these three files with language lists:

https://github.com/claudehohl/Stikked/blob/master/htdocs/application/libraries/geshi/geshi.php
https://github.com/claudehohl/Stikked/blob/master/htdocs/application/config/codemirror_languages.php
https://github.com/claudehohl/Stikked/blob/master/htdocs/application/config/geshi_languages.php

but none of them includes the language 0 that is listed as supported here: https://paste.the-compiler.org/api