diff --git a/memgpt/server/rest_api/sources/index.py b/memgpt/server/rest_api/sources/index.py
index 25334672..d8ff6911 100644
--- a/memgpt/server/rest_api/sources/index.py
+++ b/memgpt/server/rest_api/sources/index.py
@@ -1,4 +1,7 @@
 import uuid
+import tempfile
+import os
+import hashlib
 from functools import partial
 from typing import List, Optional
 
@@ -150,14 +153,20 @@ def setup_sources_index_router(server: SyncServer, interface: QueuingInterface,
         interface.clear()
         source = server.ms.get_source(source_id=source_id, user_id=user_id)
 
-        # create a directory connector that reads the in-memory  file
-        connector = DirectoryConnector(input_files=[file.filename])
+        # write the file to a temporary directory (deleted after the context manager exits)
+        with tempfile.TemporaryDirectory() as tmpdirname:
+            file_path = os.path.join(tmpdirname, file.filename)
+            with open(file_path, "wb") as buffer:
+                buffer.write(file.file.read())
 
-        # load the data into the source via the connector
-        server.load_data(user_id=user_id, source_name=source.name, connector=connector)
+            # read the file
+            connector = DirectoryConnector(input_files=[file_path])
+
+            # load the data into the source via the connector
+            passage_count, document_count = server.load_data(user_id=user_id, source_name=source.name, connector=connector)
 
         # TODO: actually return added passages/documents
-        return UploadFileToSourceResponse(source=source, added_passages=0, added_documents=0)
+        return UploadFileToSourceResponse(source=source, added_passages=passage_count, added_documents=document_count)
 
     @router.get("/sources/passages ", tags=["sources"], response_model=GetSourcePassagesResponse)
     async def list_passages(
diff --git a/memgpt/server/server.py b/memgpt/server/server.py
index ba371d21..148718a6 100644
--- a/memgpt/server/server.py
+++ b/memgpt/server/server.py
@@ -6,7 +6,7 @@ from abc import abstractmethod
 from datetime import datetime
 from functools import wraps
 from threading import Lock
-from typing import Union, Callable, Optional, List
+from typing import Union, Callable, Optional, List, Tuple
 import warnings
 
 from fastapi import HTTPException
@@ -1254,7 +1254,7 @@ class SyncServer(LockingServer):
         user_id: uuid.UUID,
         connector: DataConnector,
         source_name: str,
-    ):
+    ) -> Tuple[int, int]:
         """Load data from a DataConnector into a source for a specified user_id"""
         # TODO: this should be implemented as a batch job or at least async, since it may take a long time
 
@@ -1269,7 +1269,8 @@ class SyncServer(LockingServer):
         document_store = None  # StorageConnector.get_storage_connector(TableType.DOCUMENTS, self.config, user_id=user_id)
 
         # load data into the document store
-        load_data(connector, source, self.config.default_embedding_config, passage_store, document_store)
+        passage_count, document_count = load_data(connector, source, self.config.default_embedding_config, passage_store, document_store)
+        return passage_count, document_count
 
     def attach_source_to_agent(self, user_id: uuid.UUID, agent_id: uuid.UUID, source_name: str):
         # attach a data source to an agent