diff --git a/birdxplorer/routers/data.py b/birdxplorer/routers/data.py
index ea6982e..f950613 100644
--- a/birdxplorer/routers/data.py
+++ b/birdxplorer/routers/data.py
@@ -9,6 +9,7 @@
     ParticipantId,
     Topic,
     TweetId,
+    TwitterTimestamp,
     UserEnrollment,
 )
 from ..storage import Storage
@@ -38,11 +39,11 @@ def get_topics() -> TopicListResponse:
 
     @router.get("/notes", response_model=NoteListResponse)
     def get_notes(
-        note_ids: Union[List[NoteId], None] = Query(default=None),
-        created_at_from: Union[None, int, str] = Query(default=None),
-        created_at_to: Union[None, int, str] = Query(default=None),
-        topic_ids: Union[List[str], None] = Query(default=None),
-        post_ids: Union[List[TweetId], None] = Query(default=None),
+        note_ids: Union[List[NoteId], None] = Query(default=None, alias="noteIds"),
+        created_at_from: Union[None, int] = Query(default=None, alias="createdAtFrom"),
+        created_at_to: Union[None, int] = Query(default=None, alias="createdAtTo"),
+        topic_ids: Union[List[str], None] = Query(default=None, alias="topicIds"),
+        post_ids: Union[List[TweetId], None] = Query(default=None, alias="postIds"),
         language: Union[str, None] = Query(default=None),
     ) -> NoteListResponse:
         filters = {}
@@ -50,9 +51,9 @@ def get_notes(
         if note_ids is not None:
             filters["note_ids"] = note_ids
         if created_at_from is not None:
-            filters["created_at_from"] = created_at_from
+            filters["created_at_from"] = TwitterTimestamp.from_int(created_at_from)
         if created_at_to is not None:
-            filters["created_at_to"] = created_at_to
+            filters["created_at_to"] = TwitterTimestamp.from_int(created_at_to)
         if topic_ids is not None:
             filters["topic_ids"] = topic_ids
         if post_ids is not None: