> can you create a OpenAPI YAML by hand then? Of course. > At least with XML and XSD you have proper auto complete. Tooling for OpenAPI exist. In VS Code for

> can you create a OpenAPI YAML by hand then? Of course. > At least with XML and XSD you have proper auto complete. Tooling for OpenAPI exist. In VS Code for example. > I really no need see the need to use a schema for JSON Don't you see the need for precise machine readable description of JSON input and output for a REST API for validation? This is OpenAPI..