Since the beginning of hellosails.com, there have been articles on the following topics: The basic structure of a Sails.js application Blueprints Policies Validations and Validation Messages Services The above should provide enough knowledge to understand how to build something (relatively small) with a real use case. So today, we're gonna build simple authentication for our Sails API from scratch. There are other tools one can use to (greatly) ease the process of implementing...