API Reference > backend-itwin-client > Authentication > BackendAuthorizationClient BackendAuthorizationClient Class Beta Utility to generate OIDC/OAuth tokens for backend applications Extends ImsAuthorizationClient Extended by AgentAuthorizationClient DelegationAuthorizationClient Methods Name Description constructor(configuration: BackendAuthorizationClientConfiguration): BackendAuthorizationClient Creates an instance of BackendAuthorizationClient. discoverEndpoints(requestContext: ClientRequestContext): Promise<Issuer<Client>> Discover the endpoints of the service getClient(requestContext: ClientRequestContext): Promise<Client> Protected Inherited methods Name Inherited from Description applyUserConfiguredHttpRequestOptions(requestOptions: RequestOptions, userDefinedRequestOptions?: HttpRequestOptions): void Protected ImsAuthorizationClient Configures request options based on user defined values in HttpRequestOptions delete(requestContext: AuthorizedClientRequestContext, relativeUrlPath: string, httpRequestOptions?: HttpRequestOptions): Promise<void> Protected ImsAuthorizationClient used by clients to send delete requests getUrl(requestContext: ClientRequestContext): Promise<string> ImsAuthorizationClient Gets the URL of the service. getUrlSearchKey(): string Protected ImsAuthorizationClient Gets name/key to query the service URLs from the URL Discovery Service ("Buddi") setupOptionDefaults(options: RequestOptions): Promise<void> Protected ImsAuthorizationClient Augments request options with defaults returned by the DefaultRequestOptionsProvider. Properties Name Type Description _configuration Protected BackendAuthorizationClientConfiguration Inherited properties Name Type Inherited from Description _url Protected undefined | string ImsAuthorizationClient baseUrl Protected undefined | string ImsAuthorizationClient Sets the default base URL to use with this client. searchKey StaticReadonly string ImsAuthorizationClient Defined in core/backend-itwin-client/src/oidc/BackendAuthorizationClient.ts Line 30 Last Updated: 29 November, 2022