Concepts

Each primitive has a short page: what it is, the problem it solves, how a feature uses it, and the API. The example throughout is a blog. A person writes a post and publishes it. Subscribers receive an email afterward.

Primitive	Page
Entity	Entity
Schema	Schema
Use case	UseCase and UseCase.context
Port	Port
Adapter	Adapter
Error	Error, Error map, and Coded error
Event	Event
Event catalog	EventCatalog
Event handler	EventHandler

Import them from hexok. A use case takes its ports in the constructor. You choose the HTTP library and assemble the object graph in your application.