diff --git a/src/mako/api/lib.rs.mako b/src/mako/api/lib.rs.mako
index 72c60244b3..42e03436d3 100644
--- a/src/mako/api/lib.rs.mako
+++ b/src/mako/api/lib.rs.mako
@@ -1,6 +1,6 @@
 <%namespace name="lib" file="lib/lib.mako"/>\
 <%namespace name="util" file="../lib/util.mako"/>\
-<%  
+<%
     from util import (new_context, rust_comment, rust_module_doc_comment)
 
     c = new_context(schemas, resources, context.get('methods'))
@@ -15,7 +15,7 @@ ${lib.docs(c)}
 
 // Unused attributes happen thanks to defined, but unused structures
 // We don't warn about this, as depending on the API, some data structures or facilities are never used.
-// Instead of pre-determining this, we just disable the lint. It's manually tuned to not have any 
+// Instead of pre-determining this, we just disable the lint. It's manually tuned to not have any
 // unused imports in fully featured APIs. Same with unused_mut ... .
 #![allow(unused_imports, unused_mut, dead_code)]
 
@@ -92,6 +92,8 @@ pub struct ${hub_type}${ht_params} {
     client: RefCell<C>,
     auth: RefCell<A>,
     _user_agent: String,
+    _base_url: String,
+    _root_url: String,
 }
 
 impl<'a, ${', '.join(HUB_TYPE_PARAMETERS)}> Hub for ${hub_type}${ht_params} {}
@@ -104,6 +106,8 @@ impl<'a, ${', '.join(HUB_TYPE_PARAMETERS)}> ${hub_type}${ht_params}
             client: RefCell::new(client),
             auth: RefCell::new(authenticator),
             _user_agent: "${default_user_agent}".to_string(),
+            _base_url: "${baseUrl}".to_string(),
+            _root_url: "${rootUrl}".to_string(),
         }
     }
 
@@ -122,6 +126,26 @@ impl<'a, ${', '.join(HUB_TYPE_PARAMETERS)}> ${hub_type}${ht_params}
         self._user_agent = agent_name;
         prev
     }
+
+    /// Set the base url to use in all requests to the server.
+    /// It defaults to `${baseUrl}`.
+    ///
+    /// Returns the previously set base url.
+    pub fn base_url(&mut self, new_base_url: String) -> String {
+        let prev = self._base_url.clone();
+        self._base_url = new_base_url;
+        prev
+    }
+
+    /// Set the root url to use in all requests to the server.
+    /// It defaults to `${rootUrl}`.
+    ///
+    /// Returns the previously set root url.
+    pub fn root_url(&mut self, new_root_url: String) -> String {
+        let prev = self._root_url.clone();
+        self._root_url = new_root_url;
+        prev
+    }
 }
 
 
@@ -157,4 +181,3 @@ ${mbuild.new(resource, method, c)}
 
 % endfor ## method in methods
 % endfor ## resource, methods
-
diff --git a/src/mako/api/lib/mbuild.mako b/src/mako/api/lib/mbuild.mako
index 7b388c9bc5..d131fdf1bf 100644
--- a/src/mako/api/lib/mbuild.mako
+++ b/src/mako/api/lib/mbuild.mako
@@ -577,7 +577,7 @@ match result {
 else if \
             % endif
 protocol == "${mp.protocol}" {
-                ("${join_url(rootUrl, mp.path)}".to_string(), "${upload_type_map.get(mp.protocol, mp.protocol)}")
+                (self.hub._root_url.clone() + "${mp.path}", "${upload_type_map.get(mp.protocol, mp.protocol)}")
             } \
             % endfor
 else {
@@ -585,7 +585,7 @@ else {
             };
         params.push(("uploadType", upload_type.to_string()));
         % else:
-        let mut url = "${baseUrl}${m.path}".to_string();
+        let mut url = self.hub._base_url.clone() + "${m.path}";
         % endif
         % if not default_scope:
         % if no_auth is UNDEFINED: