diff --git a/pype/hosts/maya/plugins/create/create_render.py b/pype/hosts/maya/plugins/create/create_render.py
index 726433de92..1d06cf7080 100644
--- a/pype/hosts/maya/plugins/create/create_render.py
+++ b/pype/hosts/maya/plugins/create/create_render.py
@@ -274,9 +274,9 @@ class CreateRender(plugin.Creator):
         # authentication token expired so we need to login to Muster
         # again to get it. We use Pype API call to show login window.
         api_url = "{}/muster/show_login".format(
-            os.environ["PYPE_REST_API_URL"])
+            os.environ["PYPE_WEBSERVER_URL"])
         self.log.debug(api_url)
-        login_response = self._requests_post(api_url, timeout=1)
+        login_response = self._requests_get(api_url, timeout=1)
         if login_response.status_code != 200:
             self.log.error("Cannot show login form to Muster")
             raise Exception("Cannot show login form to Muster")
diff --git a/pype/hosts/maya/plugins/create/create_vrayscene.py b/pype/hosts/maya/plugins/create/create_vrayscene.py
index 5690fb9f51..f37a6c4e20 100644
--- a/pype/hosts/maya/plugins/create/create_vrayscene.py
+++ b/pype/hosts/maya/plugins/create/create_vrayscene.py
@@ -191,9 +191,9 @@ class CreateVRayScene(plugin.Creator):
         # authentication token expired so we need to login to Muster
         # again to get it. We use Pype API call to show login window.
         api_url = "{}/muster/show_login".format(
-            os.environ["PYPE_REST_API_URL"])
+            os.environ["PYPE_WEBSERVER_URL"])
         self.log.debug(api_url)
-        login_response = self._requests_post(api_url, timeout=1)
+        login_response = self._requests_get(api_url, timeout=1)
         if login_response.status_code != 200:
             self.log.error("Cannot show login form to Muster")
             raise Exception("Cannot show login form to Muster")
diff --git a/pype/hosts/maya/plugins/publish/validate_muster_connection.py b/pype/hosts/maya/plugins/publish/validate_muster_connection.py
index ad1022c71d..868135677e 100644
--- a/pype/hosts/maya/plugins/publish/validate_muster_connection.py
+++ b/pype/hosts/maya/plugins/publish/validate_muster_connection.py
@@ -85,9 +85,9 @@ class ValidateMusterConnection(pyblish.api.ContextPlugin):
         Renew authentication token by logging into Muster
         """
         api_url = "{}/muster/show_login".format(
-            os.environ["PYPE_REST_API_URL"])
+            os.environ["PYPE_WEBSERVER_URL"])
         cls.log.debug(api_url)
-        response = cls._requests_post(api_url, timeout=1)
+        response = cls._requests_get(api_url, timeout=1)
         if response.status_code != 200:
             cls.log.error('Cannot show login form to Muster')
             raise Exception('Cannot show login form to Muster')
diff --git a/pype/modules/muster/muster.py b/pype/modules/muster/muster.py
index 4f363b923e..5595ccff15 100644
--- a/pype/modules/muster/muster.py
+++ b/pype/modules/muster/muster.py
@@ -4,11 +4,12 @@ import appdirs
 import requests
 from .. import (
     PypeModule,
-    ITrayModule
+    ITrayModule,
+    IWebServerRoutes
 )
 
 
-class MusterModule(PypeModule, ITrayModule):
+class MusterModule(PypeModule, ITrayModule, IWebServerRoutes):
     """
     Module handling Muster Render credentials. This will display dialog
     asking for user credentials for Muster if not already specified.
@@ -31,6 +32,7 @@ class MusterModule(PypeModule, ITrayModule):
         # Tray attributes
         self.widget_login = None
         self.action_show_login = None
+        self.rest_api_obj = None
 
     def get_global_environments(self):
         return {
@@ -74,6 +76,13 @@ class MusterModule(PypeModule, ITrayModule):
 
         parent.addMenu(menu)
 
+    def webserver_initialization(self, server_manager):
+        """Implementation of IWebServerRoutes interface."""
+        if self.tray_initialized:
+            from .rest_api import MusterModuleRestApi
+
+            self.rest_api_obj = MusterModuleRestApi(self, server_manager)
+
     def load_credentials(self):
         """
         Get credentials from JSON file
diff --git a/pype/modules/muster/rest_api.py b/pype/modules/muster/rest_api.py
new file mode 100644
index 0000000000..bea759919d
--- /dev/null
+++ b/pype/modules/muster/rest_api.py
@@ -0,0 +1,22 @@
+from aiohttp.web_response import Response
+
+
+class MusterModuleRestApi:
+    def __init__(self, user_module, server_manager):
+        self.module = user_module
+        self.server_manager = server_manager
+
+        self.prefix = "/muster"
+
+        self.register()
+
+    def register(self):
+        self.server_manager.add_route(
+            "GET",
+            self.prefix + "/show_login",
+            self.show_login_widget
+        )
+
+    async def show_login_widget(self, request):
+        self.module.action_show_login.trigger()
+        return Response(status=200)