# ServicesAPI All URIs are relative to *https://www.docusign.net/restapi* Method | HTTP request | Description ------------- | ------------- | ------------- [**serviceInformationGetServiceInformation**](ServicesAPI.md#serviceinformationgetserviceinformation) | **GET** /service_information | Retrieves the available REST API versions. # **serviceInformationGetServiceInformation** ```swift open class func serviceInformationGetServiceInformation(headers: HTTPHeaders = DocuSignAPI.customHeaders, beforeSend: (inout ClientRequest) throws -> () = { _ in }) -> EventLoopFuture ``` Retrieves the available REST API versions. Retrieves the available REST API versions. DocuSign Production system: https://www.docusign.net/restapi/service_information DocuSign Demo system: https://demo.docusign.net/restapi/service_information You do not need an integrator key to view the REST API versions and resources. ### Example ```swift // The following code samples are still beta. For any issue, please report via http://github.com/OpenAPITools/openapi-generator/issues/new import DocuSignAPI // Retrieves the available REST API versions. ServicesAPI.serviceInformationGetServiceInformation().whenComplete { result in switch result { case .failure(let error): // process error case .success(let response): switch response { // process decoded response value or raw ClientResponse case .http200(let value, let raw): case .http400(let value, let raw): case .http0(let value, let raw): } } } ``` ### Parameters This endpoint does not need any parameter. ### Return type #### ServiceInformationGetServiceInformation ```swift public enum ServiceInformationGetServiceInformation { case http200(value: ServiceInformation?, raw: ClientResponse) case http400(value: ErrorDetails?, raw: ClientResponse) case http0(value: ServiceInformation?, raw: ClientResponse) } ``` ### Authorization No authorization required ### HTTP request headers - **Content-Type**: Not defined - **Accept**: */* [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)