This is a kcnt website public APIs. You will find more information at https://apis.kcnt.info.
I use Netlify function which base on AWS lambda. I also use @octokit/rest to query data from Github APIs (only in collection APIs). You might need to have Github token in order to query a information on collection APIs. And about generating apidoc, I use apidoc format to easier generate document website for this APIs.
MIT