Open API Spec

The OpenAPI Specification (OAS) defines a standard, language-agnostic interface to RESTful APIs which allows both humans and computers to discover and understand the capabilities of the service without access to source code, documentation, or through network traffic inspection. When properly defined, a consumer can understand and interact with the remote service with a minimal amount of implementation logic.

- Swagger.io

I like this a lot. I wonder if there's a quick way to generate an OpenAPI JSON from sniffing the source code. Hmm...