This is an example of how to scaffold API endpoints to list / get / create / update / delete Posts in a Keystone website.
It's a modification of the default project created with the yo keystone generator (see https://github.com/JedWatson/generator-keystone)
Gists don't let you specify full paths, so in the project structure the files would be:
routes-index.js --> /routes/index.js // modified to add the api endpoints
routes-api-posts.js --> /routes/api/posts.js // new file containing the Post API route controllers