diff --git a/schemas/auth.py b/schemas/auth.py
new file mode 100644
index 0000000..0183ccd
--- /dev/null
+++ b/schemas/auth.py
@@ -0,0 +1,28 @@
+from pydantic import BaseModel, Field
+from typing import Optional
+
+class AuthBase(BaseModel):
+    token: str = Field(..., description="Authentication token")
+    user_id: str = Field(..., description="User identifier")
+    device_id: Optional[str] = Field(None, description="Device identifier")
+
+class AuthCreate(AuthBase):
+    class Config:
+        schema_extra = {
+            "example": {
+                "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9",
+                "user_id": "user123",
+                "device_id": "device456"
+            }
+        }
+
+class Auth(AuthBase):
+    class Config:
+        orm_mode = True
+        schema_extra = {
+            "example": {
+                "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9",
+                "user_id": "user123",
+                "device_id": "device456"
+            }
+        }
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