diff --git a/servant-js/src/Servant/JS/Angular.hs b/servant-js/src/Servant/JS/Angular.hs
index 68ff0a27..53295504 100644
--- a/servant-js/src/Servant/JS/Angular.hs
+++ b/servant-js/src/Servant/JS/Angular.hs
@@ -128,6 +128,7 @@ generateAngularJSWith ngOptions opts req = "\n" <>
         method = req ^. reqMethod
         url = if url' == "'" then "'/'" else url'
         url' = "'"
+           ++ urlPrefix opts
            ++ urlArgs
            ++ queryArgs
 
diff --git a/servant-js/src/Servant/JS/Internal.hs b/servant-js/src/Servant/JS/Internal.hs
index 909df8d2..d9e2cc76 100644
--- a/servant-js/src/Servant/JS/Internal.hs
+++ b/servant-js/src/Servant/JS/Internal.hs
@@ -34,6 +34,7 @@ data CommonGeneratorOptions = CommonGeneratorOptions
   , successCallback :: String            -- ^ name of the callback parameter when the request was successful
   , errorCallback :: String              -- ^ name of the callback parameter when the request reported an error
   , moduleName :: String                 -- ^ namespace on which we define the js function (empty mean local var)
+  , urlPrefix :: String                  -- ^ a prefix we should add to the Url in the JS codegen
   }
 
 -- | Default options.
@@ -45,6 +46,7 @@ data CommonGeneratorOptions = CommonGeneratorOptions
 -- >   , successCallback = "onSuccess"
 -- >   , errorCallback = "onError"
 -- >   , moduleName = ""
+-- >   , urlPrefix = ""
 -- >   }
 -- @
 defCommonGeneratorOptions :: CommonGeneratorOptions
@@ -55,6 +57,7 @@ defCommonGeneratorOptions = CommonGeneratorOptions
   , successCallback = "onSuccess"
   , errorCallback = "onError"
   , moduleName = ""
+  , urlPrefix = ""
   }
     
 type Arg = String
diff --git a/servant-js/src/Servant/JS/JQuery.hs b/servant-js/src/Servant/JS/JQuery.hs
index be36792e..3cf0cc13 100644
--- a/servant-js/src/Servant/JS/JQuery.hs
+++ b/servant-js/src/Servant/JS/JQuery.hs
@@ -81,6 +81,7 @@ generateJQueryJSWith opts req = "\n" <>
         method = req ^. reqMethod
         url = if url' == "'" then "'/'" else url'
         url' = "'"
+           ++ urlPrefix opts
            ++ urlArgs
            ++ queryArgs
 
diff --git a/servant-js/src/Servant/JS/Vanilla.hs b/servant-js/src/Servant/JS/Vanilla.hs
index c9b0fb49..04fdb1d2 100644
--- a/servant-js/src/Servant/JS/Vanilla.hs
+++ b/servant-js/src/Servant/JS/Vanilla.hs
@@ -88,6 +88,7 @@ generateVanillaJSWith opts req = "\n" <>
         method = req ^. reqMethod
         url = if url' == "'" then "'/'" else url'
         url' = "'"
+           ++ urlPrefix opts
            ++ urlArgs
            ++ queryArgs