Swagger UI allows to visualize and interact with APIs without having any of the actual implementation logic in place. The APIs are automatically generated from the OpenAPI Specification, formerly Swagger, with the visual documentation making it easier to implement the backend code at a later stage.
The OpenAPI Specification
The OpenAPI Specification is a set of rules that semantically describes APIs. It's written either in YAML or JSON and hence, is both human- and machine-readable. Here is a simple JSON description of the Domino REST API:
The OpenAPI Specification provides us a complete interactive user interface. The user interface for Domino REST API can be found here: http://localhost:8880* and it looks like this:
Domino REST API Swagger UI: http://localhost:8880
Swagger UI Homepage: https://swagger.io/tools/swagger-ui/
You need a Domino REST API server running to open localhost links.