diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py
index 14227f1cd..2e0e6babe 100644
--- a/synapse/rest/__init__.py
+++ b/synapse/rest/__init__.py
@@ -47,6 +47,7 @@ from synapse.rest.client.v2_alpha import (
     report_event,
     openid,
     devices,
+    thirdparty,
 )
 
 from synapse.http.server import JsonResource
@@ -92,3 +93,4 @@ class ClientRestResource(JsonResource):
         report_event.register_servlets(hs, client_resource)
         openid.register_servlets(hs, client_resource)
         devices.register_servlets(hs, client_resource)
+        thirdparty.register_servlets(hs, client_resource)
diff --git a/synapse/rest/client/v2_alpha/thirdparty.py b/synapse/rest/client/v2_alpha/thirdparty.py
new file mode 100644
index 000000000..9be88b2ba
--- /dev/null
+++ b/synapse/rest/client/v2_alpha/thirdparty.py
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015, 2016 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import logging
+
+from synapse.http.servlet import RestServlet
+from ._base import client_v2_patterns
+
+logger = logging.getLogger(__name__)
+
+
+class ThirdPartyUserServlet(RestServlet):
+    PATTERNS = client_v2_patterns("/3pu(/(?P<protocol>[^/]+))?$",
+                                  releases=())
+
+    def __init__(self, hs):
+        super(ThirdPartyUserServlet, self).__init__()
+        pass
+
+    def on_GET(self, request, protocol):
+        return (200, {"TODO":"TODO"})
+
+
+def register_servlets(hs, http_server):
+    ThirdPartyUserServlet(hs).register(http_server)