diff --git a/azure-mobile-services-client/AzureMobileServicesClient.d.ts b/azure-mobile-services-client/AzureMobileServicesClient.d.ts
index 2aec111143..107cb242b8 100644
--- a/azure-mobile-services-client/AzureMobileServicesClient.d.ts
+++ b/azure-mobile-services-client/AzureMobileServicesClient.d.ts
@@ -19,8 +19,17 @@ declare module Microsoft.WindowsAzure {
         logout(): void;
         getTable(tableName: string): MobileServiceTable;
         withFilter(serviceFilter: (request: any, next: (request: any, callback: (error:any, response: any) => void ) => void, callback: (error: any, response: any) => void ) => void ) : MobileServiceClient;
+        invokeApi(apiName: string, options?:InvokeApiOptions): asyncPromise;
     }
     
+    interface InvokeApiOptions
+	{
+		method?: string;
+		body?: any;
+		headers?: Object;
+		parameters?: Object;
+	}
+    
     // User object based on Microsoft Azure documentation: http://msdn.microsoft.com/en-us/library/windowsazure/jj554220.aspx
     interface User {
         getIdentities(): any;// { [providerName: string]: { userId: string, accessToken: string, accessTokenSecret?: string }; };