diff --git a/src/mudlib/server.py b/src/mudlib/server.py
index f66540e..e5c4fa2 100644
--- a/src/mudlib/server.py
+++ b/src/mudlib/server.py
@@ -21,6 +21,7 @@ from mudlib.content import load_commands
 from mudlib.effects import clear_expired
 from mudlib.player import Player, players
 from mudlib.store import (
+    PlayerData,
     account_exists,
     authenticate,
     create_account,
@@ -229,7 +230,7 @@ async def shell(
     update_last_login(player_name)
 
     # Load player data from database or use defaults for new player
-    player_data = login_result["player_data"]
+    player_data: PlayerData | None = login_result["player_data"]
     if player_data is None:
         # New player - find a passable starting position
         center_x = _world.width // 2
diff --git a/src/mudlib/store/__init__.py b/src/mudlib/store/__init__.py
index 1f249cb..213487c 100644
--- a/src/mudlib/store/__init__.py
+++ b/src/mudlib/store/__init__.py
@@ -5,9 +5,22 @@ import hmac
 import os
 import sqlite3
 from pathlib import Path
+from typing import TypedDict
 
 from mudlib.player import Player
 
+
+class PlayerData(TypedDict):
+    """Shape of persisted player data from the database."""
+
+    x: int
+    y: int
+    pl: float
+    stamina: float
+    max_stamina: float
+    flying: bool
+
+
 # Module-level database path
 _db_path: str | None = None
 
@@ -188,7 +201,7 @@ def save_player(player: Player) -> None:
     conn.close()
 
 
-def load_player_data(name: str) -> dict | None:
+def load_player_data(name: str) -> PlayerData | None:
     """Load player data from the database.
 
     Args: