OpenAPI Ninja — generate client SDK from OAS3

Generate RESTful API clients using an OpenAPI Specification document (formerly Swagger). Our generator is open source, free, runs in-browser and produces your code in seconds.

A restful API and a sample OpenAPI document

Get the OpenAPI (Swagger) document from the API publisher

OpenAPI document in, generated code out

Feed the json/yaml document to our SDK code generation tool

A restful API and a sample OpenAPI document

We support many languages and continuously adding more

Generating your RESTful API's SDK Client Code

API publisher provides an OpenAPI (formerly Swagger) document in JSON or YAML format.

Feed the document to our SDK generator to generate an API client code.

You can now consume the API with little effort.