diff --git a/backend/app/schemas/auth.py b/backend/app/schemas/auth.py
new file mode 100644
index 0000000..3707ac6
--- /dev/null
+++ b/backend/app/schemas/auth.py
@@ -0,0 +1,16 @@
+"""Authentication schemas."""
+from pydantic import BaseModel
+
+class Token(BaseModel):
+    """Token response."""
+    access_token: str
+    token_type: str
+
+class TokenData(BaseModel):
+    """Token data."""
+    user_id: int | None = None
+
+class LoginRequest(BaseModel):
+    """Login request."""
+    username: str
+    password: str