diff --git a/letta/agent_store/chroma.py b/letta/agent_store/chroma.py
index e192a1543b..8907b5f96e 100644
--- a/letta/agent_store/chroma.py
+++ b/letta/agent_store/chroma.py
@@ -256,8 +256,8 @@ def query_text(self, query, count=None, start=None, filters: Optional[Dict] = {}
     def get_all_cursor(
         self,
         filters: Optional[Dict] = {},
-        after: str = None,
-        before: str = None,
+        after: Optional[str] = None,
+        before: Optional[str] = None,
         limit: Optional[int] = 1000,
         order_by: str = "created_at",
         reverse: bool = False,
diff --git a/letta/agent_store/db.py b/letta/agent_store/db.py
index b84dc56be9..c746591595 100644
--- a/letta/agent_store/db.py
+++ b/letta/agent_store/db.py
@@ -213,9 +213,9 @@ def get_all_paginated(self, filters: Optional[Dict] = {}, page_size: Optional[in
     def get_all_cursor(
         self,
         filters: Optional[Dict] = {},
-        after: str = None,
-        before: str = None,
-        limit: Optional[int] = 1000,
+        after: Optional[str] = None,
+        before: Optional[str] = None,
+        limit: int = 1000,
         order_by: str = "created_at",
         reverse: bool = False,
     ):
diff --git a/letta/server/server.py b/letta/server/server.py
index 2ab79144da..6d498eea7e 100644
--- a/letta/server/server.py
+++ b/letta/server/server.py
@@ -1257,10 +1257,10 @@ def get_agent_recall_cursor(
         agent_id: str,
         after: Optional[str] = None,
         before: Optional[str] = None,
-        limit: Optional[int] = 100,
-        order_by: Optional[str] = "created_at",
-        order: Optional[str] = "asc",
-        reverse: Optional[bool] = False,
+        limit: int = 100,
+        order_by: str = "created_at",
+        order: str = "asc",
+        reverse: bool = False,
         return_message_object: bool = True,
     ) -> Union[List[Message], List[LettaMessage]]:
         if self.ms.get_user(user_id=user_id) is None: