diff --git a/jupyter_rtc_core/app.py b/jupyter_rtc_core/app.py
index 0b8f46b..dff5b36 100644
--- a/jupyter_rtc_core/app.py
+++ b/jupyter_rtc_core/app.py
@@ -3,7 +3,7 @@
 import asyncio
 
 from traitlets import Instance, Type
-from .handlers import RouteHandler, YRoomSessionHandler
+from .handlers import RouteHandler, YRoomSessionHandler, FileIDIndexHandler
 from .websockets import GlobalAwarenessWebsocket, YRoomWebsocket
 from .rooms.yroom_manager import YRoomManager
 
@@ -21,9 +21,10 @@ class RtcExtensionApp(ExtensionApp):
         # # ydoc websocket
         (r"api/collaboration/room/(.*)", YRoomWebsocket),
         # handler that just adds compatibility with Jupyter Collaboration's frontend
-        (r"api/collaboration/session/(.*)", YRoomSessionHandler)
+        (r"api/collaboration/session/(.*)", YRoomSessionHandler),
+        (r"api/fileid/index", FileIDIndexHandler)
     ]
-
+    
     yroom_manager_class = Type(
         klass=YRoomManager,
         help="""YRoom Manager Class.""",
diff --git a/jupyter_rtc_core/handlers.py b/jupyter_rtc_core/handlers.py
index f3cd186..73e3422 100644
--- a/jupyter_rtc_core/handlers.py
+++ b/jupyter_rtc_core/handlers.py
@@ -4,6 +4,35 @@
 from jupyter_server.base.handlers import APIHandler
 import tornado
 
+from jupyter_server.auth.decorator import authorized
+from jupyter_server.base.handlers import APIHandler
+from tornado import web
+from tornado.escape import json_encode
+
+from jupyter_server_fileid.manager import BaseFileIdManager
+
+# TODO: This handler belongs in Jupyter Server FileID. 
+# Putting it here for now so we don't have to wait for upstream releases.
+class FileIDIndexHandler(APIHandler): 
+    auth_resource = "contents"
+
+    @property
+    def file_id_manager(self) -> BaseFileIdManager:
+        return self.settings.get("file_id_manager")
+    
+    @web.authenticated
+    @authorized
+    def post(self):
+        try:
+            path = self.get_argument("path")
+            id = self.file_id_manager.index(path)
+            self.write(json_encode({"id": id, "path": path}))
+        except web.MissingArgumentError:
+            raise web.HTTPError(
+                400, log_message="'path' parameter was not provided in the request."
+            )
+
+
 class RouteHandler(APIHandler):
     # The following decorator should be present on all verb methods (head, get, post,
     # patch, put, delete, options) to ensure only authorized user can request the