openapi-generator

OpenAPI Generator automatically produces API client libraries (SDK), server drafts, documentation and configuration from the OpenAPI 2.0 and 3.0 specifications. It supports dozens of languages and roofs such as C#, Go, Java, Haskell; it can also produce outputs such as HTML, Markdown, PlantUML documentation, and GraphQL, Postman collection, and Protocol Buffer. It is recommended to examine the specification and templates before using them if they come from an untrusted source.