Calculator-APIMatic-DEMO

# APIMATIC CodeGen as a Service [APIMATIC](https://apimatic.io) is an automatic code generator for RESTful APIs. This API exposes the access to its underlying code generation engine. We currently support the following format for API descriptions, `API Blueprint`, `RAML`, `Google API Discovery`, `IODocs`, `WADL`, and `Swagger`. Although most API descriptions can be used, not all API decsriptions are written well-enough for automatic code generation and may fail the code generation process. For this purpose, we have provided a verbose validation API, which can be used to improve your API description. > **Looking for a way to convert between API description formats like Swagger and API Blueprint?** Try [APIMATIC's Transformer API](http://docs.apimatictransformerapi.apiary.io/#) or it's web version at [Transformer](https://apimatic.io/transformer). [APIMATIC](https://apimatic.io) works in two modes i.e., perform operations on **pre-configured** API descriptions, and perform operations on API descriptions sent **on the fly** with requests. The later mode of operations has its limitations with respect to the customization of the generated code through our *codegen settings*. See [this article](https://docs.apimatic.io/api-editor/codegen-settings/) for more information about customization of the output code. ## Working with pre-configured API descriptions This mode of operation is useful where APIs are stable and therefore can be pre-configured in [APIMATIC](https://apimatic.io). You can always update an API description in [APIMATIC](https://apimatic.io) using the API Editor by clicking on the *Edit* button. When working with stored API descriptions, pre-configured *codegen settings* are used that allow customization of the generated output. In order to uniquely identify the API to perform operations on, an *API Key* is used, which can be retrieved using the API context menu. This *API Key* is a secret value and therefore operations on pre-configured API descriptions do not require authentication. See [this ...