diff --git a/lib/index.ts b/lib/index.ts
index 537f4a0..f555ee4 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -19,8 +19,13 @@ const linkToRemoteBase = (service: string) => '/remote.php/' + service
  * @brief Creates an absolute url for remote use
  * @param {string} service id
  * @return {string} the url
+ * @param {UrlOptions} options options for the parameter replacement
+ * @param {Number} options.remoteBase URL to use as a base (defaults to current instance)
  */
-export const generateRemoteUrl = (service: string) => getBaseUrl() + linkToRemoteBase(service)
+export const generateRemoteUrl = (service: string, options?: UrlOptions) => {
+    const baseUrl = options?.remoteBase || getBaseUrl()
+    return baseUrl + linkToRemoteBase(service)
+}
 
 /**
  * Get the base path for the given OCS API service
@@ -30,6 +35,7 @@ export const generateRemoteUrl = (service: string) => getBaseUrl() + linkToRemot
  * @param {UrlOptions} options options for the parameter replacement
  * @param {boolean} options.escape Set to false if parameters should not be URL encoded (default true)
  * @param {Number} options.ocsVersion OCS version to use (defaults to 2)
+ * @param {Number} options.remoteBase URL to use as a base (defaults to current instance)
  * @return {string} Absolute path for the OCS URL
  */
 export const generateOcsUrl = (url: string, params?: object, options?: UrlOptions) => {
@@ -37,15 +43,17 @@ export const generateOcsUrl = (url: string, params?: object, options?: UrlOption
         ocsVersion: 2
     }, options || {})
 
-   const version = (allOptions.ocsVersion === 1) ? 1 : 2
+    const version = (allOptions.ocsVersion === 1) ? 1 : 2
+    const baseUrl = options?.remoteBase || getBaseUrl()
 
-    return getBaseUrl() + '/ocs/v' + version + '.php' + _generateUrlPath(url, params, options);
+    return baseUrl + '/ocs/v' + version + '.php' + _generateUrlPath(url, params, options);
 }
 
 export interface UrlOptions {
     escape: boolean,
     noRewrite: boolean,
-    ocsVersion: Number
+    ocsVersion: Number,
+    remoteBase: String,
 }
 
 /**
@@ -86,6 +94,7 @@ const _generateUrlPath = (url: string, params?: object, options?: UrlOptions) =>
 
 /**
  * Generate the url with webroot for the given relative url, which can contain parameters
+ * If options.remoteBase is provided, generate the absolute url pointing ro remote server
  *
  * Parameters will be URL encoded automatically
  *
@@ -94,6 +103,7 @@ const _generateUrlPath = (url: string, params?: object, options?: UrlOptions) =>
  * @param {UrlOptions} options options for the parameter replacement
  * @param {boolean} options.noRewrite True if you want to force index.php being added
  * @param {boolean} options.escape Set to false if parameters should not be URL encoded (default true)
+ * @param {Number} options.remoteBase URL to use as a base (defaults to current instance)
  * @return {string} URL with webroot for the given relative URL
  */
 export const generateUrl = (url: string, params?: object, options?: UrlOptions) => {
@@ -101,11 +111,13 @@ export const generateUrl = (url: string, params?: object, options?: UrlOptions)
         noRewrite: false
     }, options || {})
 
+    const baseOrRootUrl = options?.remoteBase || getRootUrl()
+
     if (window?.OC?.config?.modRewriteWorking === true && !allOptions.noRewrite) {
-        return getRootUrl() + _generateUrlPath(url, params, options);
+        return baseOrRootUrl + _generateUrlPath(url, params, options);
     }
 
-    return getRootUrl() + '/index.php' + _generateUrlPath(url, params, options);
+    return baseOrRootUrl + '/index.php' + _generateUrlPath(url, params, options);
 }
 
 /**