diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 14073ec..6a423fc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,13 +23,13 @@ jobs:
           pip install -e ".[dev]"
       
       - name: Lint with flake8
-        run: flake8 wikijs tests
+        run: flake8 wikijs tests --max-line-length=88 --ignore=E203,E501,W503
       
       - name: Format check with black
-        run: black --check wikijs tests
+        run: black --check wikijs tests --line-length=88
       
       - name: Import sort check
-        run: isort --check-only wikijs tests
+        run: isort --check-only wikijs tests --line-length=88
       
       - name: Type check with mypy
         run: mypy wikijs
diff --git a/tests/__init__.py b/tests/__init__.py
index 89e6daa..698e067 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1 +1 @@
-"""Tests for wikijs-python-sdk."""
\ No newline at end of file
+"""Tests for wikijs-python-sdk."""
diff --git a/tests/auth/__init__.py b/tests/auth/__init__.py
index 0bc070c..51abb85 100644
--- a/tests/auth/__init__.py
+++ b/tests/auth/__init__.py
@@ -1 +1 @@
-"""Authentication tests for wikijs-python-sdk."""
\ No newline at end of file
+"""Authentication tests for wikijs-python-sdk."""
diff --git a/tests/auth/test_api_key.py b/tests/auth/test_api_key.py
index 8dd3f71..5f556df 100644
--- a/tests/auth/test_api_key.py
+++ b/tests/auth/test_api_key.py
@@ -36,10 +36,10 @@ class TestAPIKeyAuth:
     def test_get_headers_returns_bearer_token(self, api_key_auth, mock_api_key):
         """Test that get_headers returns proper Authorization header."""
         headers = api_key_auth.get_headers()
-        
+
         expected_headers = {
             "Authorization": f"Bearer {mock_api_key}",
-            "Content-Type": "application/json"
+            "Content-Type": "application/json",
         }
         assert headers == expected_headers
 
@@ -75,14 +75,16 @@ class TestAPIKeyAuth:
 
         # Test long key (>8 chars) - shows first 4 and last 4
         auth = APIKeyAuth("this-is-a-very-long-api-key-for-testing")
-        expected = "this" + "*" * (len("this-is-a-very-long-api-key-for-testing") - 8) + "ting"
+        expected = (
+            "this" + "*" * (len("this-is-a-very-long-api-key-for-testing") - 8) + "ting"
+        )
         assert auth.api_key == expected
 
     def test_repr_shows_masked_key(self, mock_api_key):
         """Test that __repr__ shows masked API key."""
         auth = APIKeyAuth(mock_api_key)
         repr_str = repr(auth)
-        
+
         assert "APIKeyAuth" in repr_str
         assert mock_api_key not in repr_str  # Real key should not appear
         assert auth.api_key in repr_str  # Masked key should appear
@@ -102,11 +104,19 @@ class TestAPIKeyAuth:
             ("abcd", "****"),
             ("abcdefgh", "********"),
             ("abcdefghi", "abcd*fghi"),  # 9 chars: first 4 + 1 star + last 4
-            ("abcdefghij", "abcd**ghij"),  # 10 chars: first 4 + 2 stars + last 4
-            ("very-long-api-key-here", "very**************here"),  # 22 chars: first 4 + 14 stars + last 4
+            (
+                "abcdefghij",
+                "abcd**ghij",
+            ),  # 10 chars: first 4 + 2 stars + last 4
+            (
+                "very-long-api-key-here",
+                "very**************here",
+            ),  # 22 chars: first 4 + 14 stars + last 4
         ]
-        
+
         for key, expected_mask in test_cases:
             auth = APIKeyAuth(key)
             actual = auth.api_key
-            assert actual == expected_mask, f"Failed for key '{key}': expected '{expected_mask}', got '{actual}'"
\ No newline at end of file
+            assert (
+                actual == expected_mask
+            ), f"Failed for key '{key}': expected '{expected_mask}', got '{actual}'"
diff --git a/tests/auth/test_base.py b/tests/auth/test_base.py
index 363386f..8284097 100644
--- a/tests/auth/test_base.py
+++ b/tests/auth/test_base.py
@@ -1,7 +1,6 @@
 """Tests for base authentication functionality."""
 
 import pytest
-from unittest.mock import Mock
 
 from wikijs.auth.base import AuthHandler, NoAuth
 from wikijs.exceptions import AuthenticationError
@@ -17,18 +16,19 @@ class TestAuthHandler:
 
     def test_validate_credentials_calls_is_valid(self):
         """Test that validate_credentials calls is_valid."""
+
         # Create concrete implementation for testing
         class TestAuth(AuthHandler):
             def __init__(self, valid=True):
                 self.valid = valid
                 self.refresh_called = False
-            
+
             def get_headers(self):
                 return {"Authorization": "test"}
-            
+
             def is_valid(self):
                 return self.valid
-            
+
             def refresh(self):
                 self.refresh_called = True
                 self.valid = True
@@ -46,18 +46,21 @@ class TestAuthHandler:
 
     def test_validate_credentials_raises_on_invalid_after_refresh(self):
         """Test that validate_credentials raises if still invalid after refresh."""
+
         class TestAuth(AuthHandler):
             def get_headers(self):
                 return {"Authorization": "test"}
-            
+
             def is_valid(self):
                 return False  # Always invalid
-            
+
             def refresh(self):
                 pass  # No-op refresh
 
         auth = TestAuth()
-        with pytest.raises(AuthenticationError, match="Authentication credentials are invalid"):
+        with pytest.raises(
+            AuthenticationError, match="Authentication credentials are invalid"
+        ):
             auth.validate_credentials()
 
 
@@ -89,4 +92,4 @@ class TestNoAuth:
         """Test that validate_credentials always succeeds."""
         # Should not raise any exception
         no_auth.validate_credentials()
-        assert no_auth.is_valid() is True
\ No newline at end of file
+        assert no_auth.is_valid() is True
diff --git a/tests/auth/test_jwt.py b/tests/auth/test_jwt.py
index 93bf475..9cb2fcf 100644
--- a/tests/auth/test_jwt.py
+++ b/tests/auth/test_jwt.py
@@ -1,7 +1,7 @@
 """Tests for JWT authentication."""
 
 import time
-from datetime import datetime, timedelta
+from datetime import timedelta
 from unittest.mock import patch
 
 import pytest
@@ -24,7 +24,7 @@ class TestJWTAuth:
         """Test initialization with all parameters."""
         refresh_token = "refresh-token-123"
         expires_at = time.time() + 3600
-        
+
         auth = JWTAuth(mock_jwt_token, refresh_token, expires_at)
         assert auth._token == mock_jwt_token
         assert auth._refresh_token == refresh_token
@@ -53,10 +53,10 @@ class TestJWTAuth:
     def test_get_headers_returns_bearer_token(self, jwt_auth, mock_jwt_token):
         """Test that get_headers returns proper Authorization header."""
         headers = jwt_auth.get_headers()
-        
+
         expected_headers = {
             "Authorization": f"Bearer {mock_jwt_token}",
-            "Content-Type": "application/json"
+            "Content-Type": "application/json",
         }
         assert headers == expected_headers
 
@@ -65,16 +65,16 @@ class TestJWTAuth:
         # Create JWT with expired token
         expires_at = time.time() - 3600  # Expired 1 hour ago
         refresh_token = "refresh-token-123"
-        
+
         auth = JWTAuth(mock_jwt_token, refresh_token, expires_at)
-        
+
         # Mock the refresh method to avoid actual implementation
-        with patch.object(auth, 'refresh') as mock_refresh:
+        with patch.object(auth, "refresh") as mock_refresh:
             mock_refresh.side_effect = AuthenticationError("Refresh not implemented")
-            
+
             with pytest.raises(AuthenticationError):
                 auth.get_headers()
-            
+
             mock_refresh.assert_called_once()
 
     def test_is_valid_returns_true_for_valid_token_no_expiry(self, jwt_auth):
@@ -111,15 +111,20 @@ class TestJWTAuth:
 
     def test_refresh_raises_error_without_refresh_token(self, jwt_auth):
         """Test that refresh raises error when no refresh token available."""
-        with pytest.raises(AuthenticationError, match="JWT token expired and no refresh token available"):
+        with pytest.raises(
+            AuthenticationError,
+            match="JWT token expired and no refresh token available",
+        ):
             jwt_auth.refresh()
 
     def test_refresh_raises_not_implemented_error(self, mock_jwt_token):
         """Test that refresh raises not implemented error."""
         refresh_token = "refresh-token-123"
         auth = JWTAuth(mock_jwt_token, refresh_token)
-        
-        with pytest.raises(AuthenticationError, match="JWT token refresh not yet implemented"):
+
+        with pytest.raises(
+            AuthenticationError, match="JWT token refresh not yet implemented"
+        ):
             auth.refresh()
 
     def test_is_expired_returns_false_no_expiry(self, jwt_auth):
@@ -146,7 +151,7 @@ class TestJWTAuth:
         """Test that time_until_expiry returns correct timedelta."""
         expires_at = time.time() + 3600  # Expires in 1 hour
         auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
-        
+
         time_left = auth.time_until_expiry()
         assert isinstance(time_left, timedelta)
         # Should be approximately 1 hour (allowing for small time differences)
@@ -156,7 +161,7 @@ class TestJWTAuth:
         """Test that time_until_expiry returns zero for expired token."""
         expires_at = time.time() - 3600  # Expired 1 hour ago
         auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
-        
+
         time_left = auth.time_until_expiry()
         assert time_left.total_seconds() == 0
 
@@ -164,7 +169,7 @@ class TestJWTAuth:
         """Test that token_preview masks the token for security."""
         auth = JWTAuth(mock_jwt_token)
         preview = auth.token_preview
-        
+
         assert preview != mock_jwt_token  # Should not show full token
         assert preview.startswith(mock_jwt_token[:10])
         assert preview.endswith(mock_jwt_token[-10:])
@@ -175,14 +180,14 @@ class TestJWTAuth:
         short_token = "short"
         auth = JWTAuth(short_token)
         preview = auth.token_preview
-        
+
         assert preview == "*****"  # Should be all asterisks
 
     def test_token_preview_handles_none_token(self, mock_jwt_token):
         """Test that token_preview handles None token."""
         auth = JWTAuth(mock_jwt_token)
         auth._token = None
-        
+
         assert auth.token_preview == "None"
 
     def test_repr_shows_masked_token(self, mock_jwt_token):
@@ -190,7 +195,7 @@ class TestJWTAuth:
         expires_at = time.time() + 3600
         auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
         repr_str = repr(auth)
-        
+
         assert "JWTAuth" in repr_str
         assert mock_jwt_token not in repr_str  # Real token should not appear
         assert auth.token_preview in repr_str  # Masked token should appear
@@ -210,4 +215,4 @@ class TestJWTAuth:
 
         # Test None refresh token
         auth = JWTAuth(mock_jwt_token, None)
-        assert auth._refresh_token is None
\ No newline at end of file
+        assert auth._refresh_token is None
diff --git a/tests/conftest.py b/tests/conftest.py
index f121c69..310d551 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -2,7 +2,6 @@
 
 import pytest
 import responses
-from unittest.mock import Mock
 
 from wikijs.auth import APIKeyAuth, JWTAuth, NoAuth
 
@@ -60,21 +59,12 @@ def sample_page_data():
         "content": "This is a test page content.",
         "created_at": "2023-01-01T00:00:00Z",
         "updated_at": "2023-01-01T12:00:00Z",
-        "author": {
-            "id": 1,
-            "name": "Test User",
-            "email": "test@example.com"
-        },
-        "tags": ["test", "example"]
+        "author": {"id": 1, "name": "Test User", "email": "test@example.com"},
+        "tags": ["test", "example"],
     }
 
 
 @pytest.fixture
 def sample_error_response():
     """Fixture providing sample error response."""
-    return {
-        "error": {
-            "message": "Not found",
-            "code": "PAGE_NOT_FOUND"
-        }
-    }
\ No newline at end of file
+    return {"error": {"message": "Not found", "code": "PAGE_NOT_FOUND"}}
diff --git a/tests/endpoints/__init__.py b/tests/endpoints/__init__.py
index b170091..721480b 100644
--- a/tests/endpoints/__init__.py
+++ b/tests/endpoints/__init__.py
@@ -1 +1 @@
-"""Tests for API endpoints."""
\ No newline at end of file
+"""Tests for API endpoints."""
diff --git a/tests/endpoints/test_base.py b/tests/endpoints/test_base.py
index 87e06e9..25028eb 100644
--- a/tests/endpoints/test_base.py
+++ b/tests/endpoints/test_base.py
@@ -1,147 +1,144 @@
 """Tests for base endpoint class."""
 
-import pytest
 from unittest.mock import Mock
 
+import pytest
+
 from wikijs.client import WikiJSClient
 from wikijs.endpoints.base import BaseEndpoint
 
 
 class TestBaseEndpoint:
     """Test suite for BaseEndpoint."""
-    
+
     @pytest.fixture
     def mock_client(self):
         """Create a mock WikiJS client."""
         client = Mock(spec=WikiJSClient)
         return client
-    
+
     @pytest.fixture
     def base_endpoint(self, mock_client):
         """Create a BaseEndpoint instance with mock client."""
         return BaseEndpoint(mock_client)
-    
+
     def test_init(self, mock_client):
         """Test BaseEndpoint initialization."""
         endpoint = BaseEndpoint(mock_client)
         assert endpoint._client is mock_client
-    
+
     def test_request(self, base_endpoint, mock_client):
         """Test _request method delegates to client."""
         # Setup mock response
         mock_response = {"data": "test"}
         mock_client._request.return_value = mock_response
-        
+
         # Call _request
         result = base_endpoint._request(
             "GET",
             "/test",
             params={"param": "value"},
             json_data={"data": "test"},
-            extra_param="extra"
+            extra_param="extra",
         )
-        
+
         # Verify delegation to client
         mock_client._request.assert_called_once_with(
             method="GET",
             endpoint="/test",
             params={"param": "value"},
             json_data={"data": "test"},
-            extra_param="extra"
+            extra_param="extra",
         )
-        
+
         # Verify response
         assert result == mock_response
-    
+
     def test_get(self, base_endpoint, mock_client):
         """Test _get method."""
         mock_response = {"data": "test"}
         mock_client._request.return_value = mock_response
-        
+
         result = base_endpoint._get("/test", params={"param": "value"})
-        
+
         mock_client._request.assert_called_once_with(
             method="GET",
             endpoint="/test",
             params={"param": "value"},
-            json_data=None
+            json_data=None,
         )
         assert result == mock_response
-    
+
     def test_post(self, base_endpoint, mock_client):
         """Test _post method."""
         mock_response = {"data": "test"}
         mock_client._request.return_value = mock_response
-        
+
         result = base_endpoint._post(
-            "/test",
-            json_data={"data": "test"},
-            params={"param": "value"}
+            "/test", json_data={"data": "test"}, params={"param": "value"}
         )
-        
+
         mock_client._request.assert_called_once_with(
             method="POST",
             endpoint="/test",
             params={"param": "value"},
-            json_data={"data": "test"}
+            json_data={"data": "test"},
         )
         assert result == mock_response
-    
+
     def test_put(self, base_endpoint, mock_client):
         """Test _put method."""
         mock_response = {"data": "test"}
         mock_client._request.return_value = mock_response
-        
+
         result = base_endpoint._put(
-            "/test",
-            json_data={"data": "test"},
-            params={"param": "value"}
+            "/test", json_data={"data": "test"}, params={"param": "value"}
         )
-        
+
         mock_client._request.assert_called_once_with(
             method="PUT",
             endpoint="/test",
             params={"param": "value"},
-            json_data={"data": "test"}
+            json_data={"data": "test"},
         )
         assert result == mock_response
-    
+
     def test_delete(self, base_endpoint, mock_client):
         """Test _delete method."""
         mock_response = {"data": "test"}
         mock_client._request.return_value = mock_response
-        
+
         result = base_endpoint._delete("/test", params={"param": "value"})
-        
+
         mock_client._request.assert_called_once_with(
             method="DELETE",
             endpoint="/test",
             params={"param": "value"},
-            json_data=None
+            json_data=None,
         )
         assert result == mock_response
-    
+
     def test_build_endpoint_single_part(self, base_endpoint):
         """Test _build_endpoint with single part."""
         result = base_endpoint._build_endpoint("test")
         assert result == "/test"
-    
+
     def test_build_endpoint_multiple_parts(self, base_endpoint):
         """Test _build_endpoint with multiple parts."""
         result = base_endpoint._build_endpoint("api", "v1", "pages")
         assert result == "/api/v1/pages"
-    
+
     def test_build_endpoint_with_slashes(self, base_endpoint):
         """Test _build_endpoint handles leading/trailing slashes."""
         result = base_endpoint._build_endpoint("/api/", "/v1/", "/pages/")
         assert result == "/api/v1/pages"
-    
+
     def test_build_endpoint_empty_parts(self, base_endpoint):
         """Test _build_endpoint filters out empty parts."""
         result = base_endpoint._build_endpoint("api", "", "pages", None)
         assert result == "/api/pages"
-    
+
     def test_build_endpoint_numeric_parts(self, base_endpoint):
         """Test _build_endpoint handles numeric parts."""
         result = base_endpoint._build_endpoint("pages", 123, "edit")
-        assert result == "/pages/123/edit"
\ No newline at end of file
+        assert result == "/pages/123/edit"
diff --git a/tests/endpoints/test_pages.py b/tests/endpoints/test_pages.py
index 2341f10..c5b333f 100644
--- a/tests/endpoints/test_pages.py
+++ b/tests/endpoints/test_pages.py
@@ -1,8 +1,9 @@
 """Tests for Pages API endpoint."""
 
-import pytest
 from unittest.mock import Mock, patch
 
+import pytest
+
 from wikijs.client import WikiJSClient
 from wikijs.endpoints.pages import PagesEndpoint
 from wikijs.exceptions import APIError, ValidationError
@@ -11,18 +12,18 @@ from wikijs.models.page import Page, PageCreate, PageUpdate
 
 class TestPagesEndpoint:
     """Test suite for PagesEndpoint."""
-    
+
     @pytest.fixture
     def mock_client(self):
         """Create a mock WikiJS client."""
         client = Mock(spec=WikiJSClient)
         return client
-    
+
     @pytest.fixture
     def pages_endpoint(self, mock_client):
         """Create a PagesEndpoint instance with mock client."""
         return PagesEndpoint(mock_client)
-    
+
     @pytest.fixture
     def sample_page_data(self):
         """Sample page data from API."""
@@ -41,9 +42,9 @@ class TestPagesEndpoint:
             "authorEmail": "test@example.com",
             "editor": "markdown",
             "createdAt": "2023-01-01T00:00:00Z",
-            "updatedAt": "2023-01-02T00:00:00Z"
+            "updatedAt": "2023-01-02T00:00:00Z",
         }
-    
+
     @pytest.fixture
     def sample_page_create(self):
         """Sample PageCreate object."""
@@ -52,57 +53,49 @@ class TestPagesEndpoint:
             path="new-page",
             content="# New Page\n\nContent here.",
             description="A new page",
-            tags=["new", "test"]
+            tags=["new", "test"],
         )
-    
+
     @pytest.fixture
     def sample_page_update(self):
         """Sample PageUpdate object."""
         return PageUpdate(
             title="Updated Page",
             content="# Updated Page\n\nUpdated content.",
-            tags=["updated", "test"]
+            tags=["updated", "test"],
         )
-    
+
     def test_init(self, mock_client):
         """Test PagesEndpoint initialization."""
         endpoint = PagesEndpoint(mock_client)
         assert endpoint._client is mock_client
-    
+
     def test_list_basic(self, pages_endpoint, sample_page_data):
         """Test basic page listing."""
         # Mock the GraphQL response
-        mock_response = {
-            "data": {
-                "pages": [sample_page_data]
-            }
-        }
+        mock_response = {"data": {"pages": [sample_page_data]}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call list method
         pages = pages_endpoint.list()
-        
+
         # Verify request
         pages_endpoint._post.assert_called_once()
         call_args = pages_endpoint._post.call_args
         assert call_args[0][0] == "/graphql"
-        
+
         # Verify response
         assert len(pages) == 1
         assert isinstance(pages[0], Page)
         assert pages[0].id == 123
         assert pages[0].title == "Test Page"
         assert pages[0].path == "test-page"
-    
+
     def test_list_with_parameters(self, pages_endpoint, sample_page_data):
         """Test page listing with filter parameters."""
-        mock_response = {
-            "data": {
-                "pages": [sample_page_data]
-            }
-        }
+        mock_response = {"data": {"pages": [sample_page_data]}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call with parameters
         pages = pages_endpoint.list(
             limit=10,
@@ -112,14 +105,14 @@ class TestPagesEndpoint:
             locale="en",
             author_id=1,
             order_by="created_at",
-            order_direction="DESC"
+            order_direction="DESC",
         )
-        
+
         # Verify request
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         variables = query_data["variables"]
-        
+
         assert variables["limit"] == 10
         assert variables["offset"] == 5
         assert variables["search"] == "test"
@@ -128,133 +121,117 @@ class TestPagesEndpoint:
         assert variables["authorId"] == 1
         assert variables["orderBy"] == "created_at"
         assert variables["orderDirection"] == "DESC"
-        
+
         # Verify response
         assert len(pages) == 1
         assert isinstance(pages[0], Page)
-    
+
     def test_list_validation_errors(self, pages_endpoint):
         """Test list method parameter validation."""
         # Test invalid limit
         with pytest.raises(ValidationError, match="limit must be greater than 0"):
             pages_endpoint.list(limit=0)
-        
+
         # Test invalid offset
         with pytest.raises(ValidationError, match="offset must be non-negative"):
             pages_endpoint.list(offset=-1)
-        
+
         # Test invalid order_by
         with pytest.raises(ValidationError, match="order_by must be one of"):
             pages_endpoint.list(order_by="invalid")
-        
+
         # Test invalid order_direction
-        with pytest.raises(ValidationError, match="order_direction must be ASC or DESC"):
+        with pytest.raises(
+            ValidationError, match="order_direction must be ASC or DESC"
+        ):
             pages_endpoint.list(order_direction="INVALID")
-    
+
     def test_list_api_error(self, pages_endpoint):
         """Test list method handling API errors."""
         # Mock GraphQL error response
-        mock_response = {
-            "errors": [{"message": "GraphQL error"}]
-        }
+        mock_response = {"errors": [{"message": "GraphQL error"}]}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         with pytest.raises(APIError, match="GraphQL errors"):
             pages_endpoint.list()
-    
+
     def test_get_success(self, pages_endpoint, sample_page_data):
         """Test getting a page by ID."""
-        mock_response = {
-            "data": {
-                "page": sample_page_data
-            }
-        }
+        mock_response = {"data": {"page": sample_page_data}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         page = pages_endpoint.get(123)
-        
+
         # Verify request
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         assert query_data["variables"]["id"] == 123
-        
+
         # Verify response
         assert isinstance(page, Page)
         assert page.id == 123
         assert page.title == "Test Page"
-    
+
     def test_get_validation_error(self, pages_endpoint):
         """Test get method parameter validation."""
         with pytest.raises(ValidationError, match="page_id must be a positive integer"):
             pages_endpoint.get(0)
-        
+
         with pytest.raises(ValidationError, match="page_id must be a positive integer"):
             pages_endpoint.get(-1)
-        
+
         with pytest.raises(ValidationError, match="page_id must be a positive integer"):
             pages_endpoint.get("invalid")
-    
+
     def test_get_not_found(self, pages_endpoint):
         """Test get method when page not found."""
-        mock_response = {
-            "data": {
-                "page": None
-            }
-        }
+        mock_response = {"data": {"page": None}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         with pytest.raises(APIError, match="Page with ID 123 not found"):
             pages_endpoint.get(123)
-    
+
     def test_get_by_path_success(self, pages_endpoint, sample_page_data):
         """Test getting a page by path."""
-        mock_response = {
-            "data": {
-                "pageByPath": sample_page_data
-            }
-        }
+        mock_response = {"data": {"pageByPath": sample_page_data}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         page = pages_endpoint.get_by_path("test-page")
-        
+
         # Verify request
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         variables = query_data["variables"]
         assert variables["path"] == "test-page"
         assert variables["locale"] == "en"
-        
+
         # Verify response
         assert isinstance(page, Page)
         assert page.path == "test-page"
-    
+
     def test_get_by_path_validation_error(self, pages_endpoint):
         """Test get_by_path method parameter validation."""
         with pytest.raises(ValidationError, match="path must be a non-empty string"):
             pages_endpoint.get_by_path("")
-        
+
         with pytest.raises(ValidationError, match="path must be a non-empty string"):
             pages_endpoint.get_by_path(None)
-    
+
     def test_create_success(self, pages_endpoint, sample_page_create, sample_page_data):
         """Test creating a new page."""
-        mock_response = {
-            "data": {
-                "createPage": sample_page_data
-            }
-        }
+        mock_response = {"data": {"createPage": sample_page_data}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         created_page = pages_endpoint.create(sample_page_create)
-        
+
         # Verify request
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         variables = query_data["variables"]
-        
+
         assert variables["title"] == "New Page"
         assert variables["path"] == "new-page"
         assert variables["content"] == "# New Page\n\nContent here."
@@ -262,194 +239,177 @@ class TestPagesEndpoint:
         assert variables["tags"] == ["new", "test"]
         assert variables["isPublished"] is True
         assert variables["isPrivate"] is False
-        
+
         # Verify response
         assert isinstance(created_page, Page)
         assert created_page.id == 123
-    
+
     def test_create_with_dict(self, pages_endpoint, sample_page_data):
         """Test creating a page with dict data."""
-        mock_response = {
-            "data": {
-                "createPage": sample_page_data
-            }
-        }
+        mock_response = {"data": {"createPage": sample_page_data}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         page_dict = {
             "title": "Dict Page",
             "path": "dict-page",
             "content": "Content from dict",
         }
-        
+
         # Call method
         created_page = pages_endpoint.create(page_dict)
-        
+
         # Verify response
         assert isinstance(created_page, Page)
-    
+
     def test_create_validation_error(self, pages_endpoint):
         """Test create method validation errors."""
         # Test invalid data type
-        with pytest.raises(ValidationError, match="page_data must be PageCreate object or dict"):
+        with pytest.raises(
+            ValidationError,
+            match="page_data must be PageCreate object or dict",
+        ):
             pages_endpoint.create("invalid")
-        
+
         # Test invalid dict data
         with pytest.raises(ValidationError, match="Invalid page data"):
             pages_endpoint.create({"invalid": "data"})
-    
+
     def test_create_api_error(self, pages_endpoint, sample_page_create):
         """Test create method API errors."""
-        mock_response = {
-            "errors": [{"message": "Creation failed"}]
-        }
+        mock_response = {"errors": [{"message": "Creation failed"}]}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         with pytest.raises(APIError, match="Failed to create page"):
             pages_endpoint.create(sample_page_create)
-    
+
     def test_update_success(self, pages_endpoint, sample_page_update, sample_page_data):
         """Test updating a page."""
-        mock_response = {
-            "data": {
-                "updatePage": sample_page_data
-            }
-        }
+        mock_response = {"data": {"updatePage": sample_page_data}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         updated_page = pages_endpoint.update(123, sample_page_update)
-        
+
         # Verify request
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         variables = query_data["variables"]
-        
+
         assert variables["id"] == 123
         assert variables["title"] == "Updated Page"
         assert variables["content"] == "# Updated Page\n\nUpdated content."
         assert variables["tags"] == ["updated", "test"]
         assert "description" not in variables  # Should not include None values
-        
+
         # Verify response
         assert isinstance(updated_page, Page)
-    
+
     def test_update_validation_errors(self, pages_endpoint, sample_page_update):
         """Test update method validation errors."""
         # Test invalid page_id
         with pytest.raises(ValidationError, match="page_id must be a positive integer"):
             pages_endpoint.update(0, sample_page_update)
-        
+
         # Test invalid page_data type
-        with pytest.raises(ValidationError, match="page_data must be PageUpdate object or dict"):
+        with pytest.raises(
+            ValidationError,
+            match="page_data must be PageUpdate object or dict",
+        ):
             pages_endpoint.update(123, "invalid")
-    
+
     def test_delete_success(self, pages_endpoint):
         """Test deleting a page."""
         mock_response = {
             "data": {
                 "deletePage": {
                     "success": True,
-                    "message": "Page deleted successfully"
+                    "message": "Page deleted successfully",
                 }
             }
         }
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         result = pages_endpoint.delete(123)
-        
+
         # Verify request
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         assert query_data["variables"]["id"] == 123
-        
+
         # Verify response
         assert result is True
-    
+
     def test_delete_validation_error(self, pages_endpoint):
         """Test delete method validation errors."""
         with pytest.raises(ValidationError, match="page_id must be a positive integer"):
             pages_endpoint.delete(0)
-    
+
     def test_delete_failure(self, pages_endpoint):
         """Test delete method when deletion fails."""
         mock_response = {
-            "data": {
-                "deletePage": {
-                    "success": False,
-                    "message": "Deletion failed"
-                }
-            }
+            "data": {"deletePage": {"success": False, "message": "Deletion failed"}}
         }
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         with pytest.raises(APIError, match="Page deletion failed: Deletion failed"):
             pages_endpoint.delete(123)
-    
+
     def test_search_success(self, pages_endpoint, sample_page_data):
         """Test searching pages."""
-        mock_response = {
-            "data": {
-                "pages": [sample_page_data]
-            }
-        }
+        mock_response = {"data": {"pages": [sample_page_data]}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         results = pages_endpoint.search("test query", limit=5)
-        
+
         # Verify request (should call list with search parameter)
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         variables = query_data["variables"]
-        
+
         assert variables["search"] == "test query"
         assert variables["limit"] == 5
-        
+
         # Verify response
         assert len(results) == 1
         assert isinstance(results[0], Page)
-    
+
     def test_search_validation_error(self, pages_endpoint):
         """Test search method validation errors."""
         with pytest.raises(ValidationError, match="query must be a non-empty string"):
             pages_endpoint.search("")
-        
+
         with pytest.raises(ValidationError, match="limit must be greater than 0"):
             pages_endpoint.search("test", limit=0)
-    
+
     def test_get_by_tags_match_all(self, pages_endpoint, sample_page_data):
         """Test getting pages by tags (match all)."""
-        mock_response = {
-            "data": {
-                "pages": [sample_page_data]
-            }
-        }
+        mock_response = {"data": {"pages": [sample_page_data]}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call method
         results = pages_endpoint.get_by_tags(["test", "example"], match_all=True)
-        
+
         # Verify request (should call list with tags parameter)
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
         variables = query_data["variables"]
-        
+
         assert variables["tags"] == ["test", "example"]
-        
+
         # Verify response
         assert len(results) == 1
         assert isinstance(results[0], Page)
-    
+
     def test_get_by_tags_validation_error(self, pages_endpoint):
         """Test get_by_tags method validation errors."""
         with pytest.raises(ValidationError, match="tags must be a non-empty list"):
             pages_endpoint.get_by_tags([])
-        
+
         with pytest.raises(ValidationError, match="limit must be greater than 0"):
             pages_endpoint.get_by_tags(["test"], limit=0)
-    
+
     def test_normalize_page_data(self, pages_endpoint):
         """Test page data normalization."""
         api_data = {
@@ -457,11 +417,11 @@ class TestPagesEndpoint:
             "title": "Test",
             "isPublished": True,
             "authorId": 1,
-            "createdAt": "2023-01-01T00:00:00Z"
+            "createdAt": "2023-01-01T00:00:00Z",
         }
-        
+
         normalized = pages_endpoint._normalize_page_data(api_data)
-        
+
         # Check field mapping
         assert normalized["id"] == 123
         assert normalized["title"] == "Test"
@@ -469,57 +429,48 @@ class TestPagesEndpoint:
         assert normalized["author_id"] == 1
         assert normalized["created_at"] == "2023-01-01T00:00:00Z"
         assert normalized["tags"] == []  # Default value
-    
+
     def test_normalize_page_data_missing_fields(self, pages_endpoint):
         """Test page data normalization with missing fields."""
-        api_data = {
-            "id": 123,
-            "title": "Test"
-        }
-        
+        api_data = {"id": 123, "title": "Test"}
+
         normalized = pages_endpoint._normalize_page_data(api_data)
-        
+
         # Check that only present fields are included
         assert "id" in normalized
         assert "title" in normalized
         assert "is_published" not in normalized
         assert "tags" in normalized  # Should have default value
-    
-    @patch('wikijs.endpoints.pages.Page')
-    def test_list_page_parsing_error(self, mock_page_class, pages_endpoint, sample_page_data):
+
+    @patch("wikijs.endpoints.pages.Page")
+    def test_list_page_parsing_error(
+        self, mock_page_class, pages_endpoint, sample_page_data
+    ):
         """Test handling of page parsing errors in list method."""
         # Mock Page constructor to raise an exception
         mock_page_class.side_effect = ValueError("Parsing error")
-        
-        mock_response = {
-            "data": {
-                "pages": [sample_page_data]
-            }
-        }
+
+        mock_response = {"data": {"pages": [sample_page_data]}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         with pytest.raises(APIError, match="Failed to parse page data"):
             pages_endpoint.list()
-    
+
     def test_graphql_query_structure(self, pages_endpoint, sample_page_data):
         """Test that GraphQL queries have correct structure."""
-        mock_response = {
-            "data": {
-                "pages": [sample_page_data]
-            }
-        }
+        mock_response = {"data": {"pages": [sample_page_data]}}
         pages_endpoint._post = Mock(return_value=mock_response)
-        
+
         # Call list method
         pages_endpoint.list()
-        
+
         # Verify the GraphQL query structure
         call_args = pages_endpoint._post.call_args
         query_data = call_args[1]["json_data"]
-        
+
         assert "query" in query_data
         assert "variables" in query_data
         assert "pages(" in query_data["query"]
         assert "id" in query_data["query"]
         assert "title" in query_data["query"]
-        assert "content" in query_data["query"]
\ No newline at end of file
+        assert "content" in query_data["query"]
diff --git a/tests/models/test_base.py b/tests/models/test_base.py
index 556bf3c..4e521bf 100644
--- a/tests/models/test_base.py
+++ b/tests/models/test_base.py
@@ -3,14 +3,12 @@
 import json
 from datetime import datetime
 
-import pytest
-
 from wikijs.models.base import BaseModel, TimestampedModel
 
 
 class TestModelForTesting(BaseModel):
     """Test model for testing base functionality."""
-    
+
     name: str
     value: int = 42
     optional_field: str = None
@@ -18,82 +16,90 @@ class TestModelForTesting(BaseModel):
 
 class TestTimestampedModelForTesting(TimestampedModel):
     """Test model with timestamps."""
-    
+
     title: str
-    
+
 
 class TestBaseModel:
     """Test base model functionality."""
-    
+
     def test_basic_model_creation(self):
         """Test basic model creation."""
         model = TestModelForTesting(name="test", value=100)
         assert model.name == "test"
         assert model.value == 100
         assert model.optional_field is None
-    
+
     def test_to_dict_basic(self):
         """Test to_dict method."""
         model = TestModelForTesting(name="test", value=100)
         result = model.to_dict()
-        
+
         expected = {"name": "test", "value": 100}
         assert result == expected
-    
+
     def test_to_dict_with_none_values(self):
         """Test to_dict with None values."""
         model = TestModelForTesting(name="test", value=100)
-        
+
         # Test excluding None values (default)
         result_exclude = model.to_dict(exclude_none=True)
         expected_exclude = {"name": "test", "value": 100}
         assert result_exclude == expected_exclude
-        
+
         # Test including None values
         result_include = model.to_dict(exclude_none=False)
-        expected_include = {"name": "test", "value": 100, "optional_field": None}
+        expected_include = {
+            "name": "test",
+            "value": 100,
+            "optional_field": None,
+        }
         assert result_include == expected_include
-    
+
     def test_to_json_basic(self):
         """Test to_json method."""
         model = TestModelForTesting(name="test", value=100)
         result = model.to_json()
-        
+
         # Parse the JSON to verify structure
         parsed = json.loads(result)
         expected = {"name": "test", "value": 100}
         assert parsed == expected
-    
+
     def test_to_json_with_none_values(self):
         """Test to_json with None values."""
         model = TestModelForTesting(name="test", value=100)
-        
+
         # Test excluding None values (default)
         result_exclude = model.to_json(exclude_none=True)
         parsed_exclude = json.loads(result_exclude)
         expected_exclude = {"name": "test", "value": 100}
         assert parsed_exclude == expected_exclude
-        
+
         # Test including None values
         result_include = model.to_json(exclude_none=False)
         parsed_include = json.loads(result_include)
-        expected_include = {"name": "test", "value": 100, "optional_field": None}
+        expected_include = {
+            "name": "test",
+            "value": 100,
+            "optional_field": None,
+        }
         assert parsed_include == expected_include
-    
+
     def test_from_dict(self):
         """Test from_dict class method."""
         data = {"name": "test", "value": 200}
         model = TestModelForTesting.from_dict(data)
-        
+
         assert isinstance(model, TestModelForTesting)
         assert model.name == "test"
         assert model.value == 200
-    
+
     def test_from_json(self):
         """Test from_json class method."""
         json_str = '{"name": "test", "value": 300}'
         model = TestModelForTesting.from_json(json_str)
-        
+
         assert isinstance(model, TestModelForTesting)
         assert model.name == "test"
         assert model.value == 300
@@ -101,51 +107,44 @@ class TestBaseModel:
 
 class TestTimestampedModel:
     """Test timestamped model functionality."""
-    
+
     def test_timestamped_model_creation(self):
         """Test timestamped model creation."""
         model = TestTimestampedModelForTesting(title="Test Title")
         assert model.title == "Test Title"
         assert model.created_at is None
         assert model.updated_at is None
-    
+
     def test_timestamped_model_with_timestamps(self):
         """Test timestamped model with timestamps."""
         now = datetime.now()
         model = TestTimestampedModelForTesting(
-            title="Test Title",
-            created_at=now,
-            updated_at=now
+            title="Test Title", created_at=now, updated_at=now
         )
         assert model.title == "Test Title"
         assert model.created_at == now
         assert model.updated_at == now
-    
+
     def test_is_new_property_true(self):
         """Test is_new property returns True for new models."""
         model = TestTimestampedModelForTesting(title="Test Title")
         assert model.is_new is True
-    
+
     def test_is_new_property_false(self):
         """Test is_new property returns False for existing models."""
         now = datetime.now()
-        model = TestTimestampedModelForTesting(
-            title="Test Title",
-            created_at=now
-        )
+        model = TestTimestampedModelForTesting(title="Test Title", created_at=now)
         assert model.is_new is False
-    
+
     def test_datetime_serialization(self):
         """Test datetime serialization in JSON."""
         now = datetime(2023, 1, 1, 12, 0, 0)
         model = TestTimestampedModelForTesting(
-            title="Test Title",
-            created_at=now,
-            updated_at=now
+            title="Test Title", created_at=now, updated_at=now
         )
-        
+
         json_str = model.to_json()
         parsed = json.loads(json_str)
-        
+
         assert parsed["created_at"] == "2023-01-01T12:00:00"
-        assert parsed["updated_at"] == "2023-01-01T12:00:00"
\ No newline at end of file
+        assert parsed["updated_at"] == "2023-01-01T12:00:00"
diff --git a/tests/models/test_page.py b/tests/models/test_page.py
index 6e2d171..188f836 100644
--- a/tests/models/test_page.py
+++ b/tests/models/test_page.py
@@ -1,14 +1,13 @@
 """Tests for Page models."""
 
 import pytest
-from datetime import datetime
 
 from wikijs.models.page import Page, PageCreate, PageUpdate
 
 
 class TestPageModel:
     """Test Page model functionality."""
-    
+
     @pytest.fixture
     def valid_page_data(self):
         """Valid page data for testing."""
@@ -27,20 +26,23 @@ class TestPageModel:
             "author_email": "test@example.com",
             "editor": "markdown",
             "created_at": "2023-01-01T00:00:00Z",
-            "updated_at": "2023-01-02T00:00:00Z"
+            "updated_at": "2023-01-02T00:00:00Z",
         }
-    
+
     def test_page_creation_valid(self, valid_page_data):
         """Test creating a valid page."""
         page = Page(**valid_page_data)
-        
+
         assert page.id == 123
         assert page.title == "Test Page"
         assert page.path == "test-page"
-        assert page.content == "# Test Page\n\nThis is test content with **bold** and *italic* text."
+        assert (
+            page.content
+            == "# Test Page\n\nThis is test content with **bold** and *italic* text."
+        )
         assert page.is_published is True
         assert page.tags == ["test", "example"]
-    
+
     def test_page_creation_minimal(self):
         """Test creating page with minimal required fields."""
         page = Page(
@@ -49,14 +51,14 @@ class TestPageModel:
             path="minimal",
             content="Content",
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
-        
+
         assert page.id == 1
         assert page.title == "Minimal Page"
         assert page.is_published is True  # Default value
         assert page.tags == []  # Default value
-    
+
     def test_page_path_validation_valid(self):
         """Test valid path validation."""
         valid_paths = [
@@ -64,9 +66,9 @@ class TestPageModel:
             "path/with/slashes",
             "path_with_underscores",
             "path123",
-            "category/subcategory/page-name"
+            "category/subcategory/page-name",
         ]
-        
+
         for path in valid_paths:
             page = Page(
                 id=1,
@@ -74,10 +76,10 @@ class TestPageModel:
                 path=path,
                 content="Content",
                 created_at="2023-01-01T00:00:00Z",
-                updated_at="2023-01-01T00:00:00Z"
+                updated_at="2023-01-01T00:00:00Z",
             )
             assert page.path == path
-    
+
     def test_page_path_validation_invalid(self):
         """Test invalid path validation."""
         invalid_paths = [
@@ -86,7 +88,7 @@ class TestPageModel:
             "path@with@symbols",  # Special characters
             "path.with.dots",  # Dots
         ]
-        
+
         for path in invalid_paths:
             with pytest.raises(ValueError):
                 Page(
@@ -95,9 +97,9 @@ class TestPageModel:
                     path=path,
                     content="Content",
                     created_at="2023-01-01T00:00:00Z",
-                    updated_at="2023-01-01T00:00:00Z"
+                    updated_at="2023-01-01T00:00:00Z",
                 )
-    
+
     def test_page_path_normalization(self):
         """Test path normalization."""
         # Leading/trailing slashes should be removed
@@ -107,10 +109,10 @@ class TestPageModel:
             path="/path/to/page/",
             content="Content",
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
         assert page.path == "path/to/page"
-    
+
     def test_page_title_validation_valid(self):
         """Test valid title validation."""
         page = Page(
@@ -119,10 +121,10 @@ class TestPageModel:
             path="test",
             content="Content",
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
         assert page.title == "Valid Title with Spaces"
-    
+
     def test_page_title_validation_invalid(self):
         """Test invalid title validation."""
         invalid_titles = [
@@ -130,7 +132,7 @@ class TestPageModel:
             "   ",  # Only whitespace
             "x" * 256,  # Too long
         ]
-        
+
         for title in invalid_titles:
             with pytest.raises(ValueError):
                 Page(
@@ -139,16 +141,16 @@ class TestPageModel:
                     path="test",
                     content="Content",
                     created_at="2023-01-01T00:00:00Z",
-                    updated_at="2023-01-01T00:00:00Z"
+                    updated_at="2023-01-01T00:00:00Z",
                 )
-    
+
     def test_page_word_count(self, valid_page_data):
         """Test word count calculation."""
         page = Page(**valid_page_data)
         # "# Test Page\n\nThis is test content with **bold** and *italic* text."
         # Words: Test, Page, This, is, test, content, with, bold, and, italic, text
         assert page.word_count == 12
-    
+
     def test_page_word_count_empty_content(self):
         """Test word count with empty content."""
         page = Page(
@@ -157,16 +159,16 @@ class TestPageModel:
             path="test",
             content="",
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
         assert page.word_count == 0
-    
+
     def test_page_reading_time(self, valid_page_data):
         """Test reading time calculation."""
         page = Page(**valid_page_data)
         # 11 words, assuming 200 words per minute, should be 1 minute (minimum)
         assert page.reading_time == 1
-    
+
     def test_page_reading_time_long_content(self):
         """Test reading time with long content."""
         long_content = " ".join(["word"] * 500)  # 500 words
@@ -176,20 +178,20 @@ class TestPageModel:
             path="test",
             content=long_content,
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
         # 500 words / 200 words per minute = 2.5, rounded down to 2
         assert page.reading_time == 2
-    
+
     def test_page_url_path(self, valid_page_data):
         """Test URL path generation."""
         page = Page(**valid_page_data)
         assert page.url_path == "/test-page"
-    
+
     def test_page_extract_headings(self):
         """Test heading extraction from markdown content."""
         content = """# Main Title
-        
+
 Some content here.
 
 ## Secondary Heading
@@ -197,26 +199,31 @@ Some content here.
 More content.
 
 ### Third Level
-        
+
 And more content.
 
 ## Another Secondary
 
 Final content."""
-        
+
         page = Page(
             id=1,
             title="Test",
             path="test",
             content=content,
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
-        
+
         headings = page.extract_headings()
-        expected = ["Main Title", "Secondary Heading", "Third Level", "Another Secondary"]
+        expected = [
+            "Main Title",
+            "Secondary Heading",
+            "Third Level",
+            "Another Secondary",
+        ]
         assert headings == expected
-    
+
     def test_page_extract_headings_empty_content(self):
         """Test heading extraction with no content."""
         page = Page(
@@ -225,19 +232,19 @@ Final content."""
             path="test",
             content="",
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
         assert page.extract_headings() == []
-    
+
     def test_page_has_tag(self, valid_page_data):
         """Test tag checking."""
         page = Page(**valid_page_data)
-        
+
         assert page.has_tag("test") is True
         assert page.has_tag("example") is True
         assert page.has_tag("TEST") is True  # Case insensitive
         assert page.has_tag("nonexistent") is False
-    
+
     def test_page_has_tag_no_tags(self):
         """Test tag checking with no tags."""
         page = Page(
@@ -246,28 +253,28 @@ Final content."""
             path="test",
             content="Content",
             created_at="2023-01-01T00:00:00Z",
-            updated_at="2023-01-01T00:00:00Z"
+            updated_at="2023-01-01T00:00:00Z",
         )
         assert page.has_tag("any") is False
 
 
 class TestPageCreateModel:
     """Test PageCreate model functionality."""
-    
+
     def test_page_create_valid(self):
         """Test creating valid PageCreate."""
         page_create = PageCreate(
             title="New Page",
             path="new-page",
-            content="# New Page\n\nContent here."
+            content="# New Page\n\nContent here.",
         )
-        
+
         assert page_create.title == "New Page"
         assert page_create.path == "new-page"
         assert page_create.content == "# New Page\n\nContent here."
         assert page_create.is_published is True  # Default
         assert page_create.editor == "markdown"  # Default
-    
+
     def test_page_create_with_optional_fields(self):
         """Test PageCreate with optional fields."""
         page_create = PageCreate(
@@ -279,65 +286,62 @@ class TestPageCreateModel:
             is_private=True,
             tags=["new", "test"],
             locale="fr",
-            editor="html"
+            editor="html",
         )
-        
+
         assert page_create.description == "A new page"
         assert page_create.is_published is False
         assert page_create.is_private is True
         assert page_create.tags == ["new", "test"]
         assert page_create.locale == "fr"
         assert page_create.editor == "html"
-    
+
     def test_page_create_path_validation(self):
         """Test path validation in PageCreate."""
         # Valid path
         PageCreate(title="Test", path="valid-path", content="Content")
-        
+
         # Invalid paths should raise errors
         with pytest.raises(ValueError):
             PageCreate(title="Test", path="", content="Content")
-        
+
         with pytest.raises(ValueError):
             PageCreate(title="Test", path="invalid path", content="Content")
-    
+
     def test_page_create_title_validation(self):
         """Test title validation in PageCreate."""
         # Valid title
         PageCreate(title="Valid Title", path="test", content="Content")
-        
+
         # Invalid titles should raise errors
         with pytest.raises(ValueError):
             PageCreate(title="", path="test", content="Content")
-        
+
         with pytest.raises(ValueError):
             PageCreate(title="x" * 256, path="test", content="Content")
 
 
 class TestPageUpdateModel:
     """Test PageUpdate model functionality."""
-    
+
     def test_page_update_empty(self):
         """Test creating empty PageUpdate."""
         page_update = PageUpdate()
-        
+
         assert page_update.title is None
         assert page_update.content is None
         assert page_update.description is None
         assert page_update.is_published is None
         assert page_update.tags is None
-    
+
     def test_page_update_partial(self):
         """Test partial PageUpdate."""
-        page_update = PageUpdate(
-            title="Updated Title",
-            content="Updated content"
-        )
-        
+        page_update = PageUpdate(title="Updated Title", content="Updated content")
+
         assert page_update.title == "Updated Title"
         assert page_update.content == "Updated content"
         assert page_update.description is None  # Not updated
-    
+
     def test_page_update_full(self):
         """Test full PageUpdate."""
         page_update = PageUpdate(
@@ -346,27 +350,27 @@ class TestPageUpdateModel:
             description="Updated description",
             is_published=False,
             is_private=True,
-            tags=["updated", "test"]
+            tags=["updated", "test"],
         )
-        
+
         assert page_update.title == "Updated Title"
         assert page_update.content == "Updated content"
         assert page_update.description == "Updated description"
         assert page_update.is_published is False
         assert page_update.is_private is True
         assert page_update.tags == ["updated", "test"]
-    
+
     def test_page_update_title_validation(self):
         """Test title validation in PageUpdate."""
         # Valid title
         PageUpdate(title="Valid Title")
-        
+
         # None should be allowed (no update)
         PageUpdate(title=None)
-        
+
         # Invalid titles should raise errors
         with pytest.raises(ValueError):
             PageUpdate(title="")
-        
+
         with pytest.raises(ValueError):
-            PageUpdate(title="x" * 256)
\ No newline at end of file
+            PageUpdate(title="x" * 256)
diff --git a/tests/test_client.py b/tests/test_client.py
index 1efab21..10788bd 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -1,9 +1,10 @@
 """Tests for WikiJS client."""
 
 import json
-import pytest
 from unittest.mock import Mock, patch
 
+import pytest
+
 from wikijs.auth import APIKeyAuth
 from wikijs.client import WikiJSClient
 from wikijs.exceptions import (
@@ -17,177 +18,185 @@ from wikijs.exceptions import (
 
 class TestWikiJSClientInit:
     """Test WikiJSClient initialization."""
-    
+
     def test_init_with_api_key_string(self):
         """Test initialization with API key string."""
-        with patch('wikijs.client.requests.Session'):
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient("https://wiki.example.com", auth="test-key")
-            
+
             assert client.base_url == "https://wiki.example.com"
             assert isinstance(client._auth_handler, APIKeyAuth)
             assert client.timeout == 30
             assert client.verify_ssl is True
             assert "wikijs-python-sdk" in client.user_agent
-    
+
     def test_init_with_auth_handler(self):
         """Test initialization with auth handler."""
         auth_handler = APIKeyAuth("test-key")
-        
-        with patch('wikijs.client.requests.Session'):
+
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient("https://wiki.example.com", auth=auth_handler)
-            
+
             assert client._auth_handler is auth_handler
-    
+
     def test_init_invalid_auth(self):
         """Test initialization with invalid auth parameter."""
         with pytest.raises(ConfigurationError, match="Invalid auth parameter"):
             WikiJSClient("https://wiki.example.com", auth=123)
-    
+
     def test_init_with_custom_settings(self):
         """Test initialization with custom settings."""
-        with patch('wikijs.client.requests.Session'):
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient(
                 "https://wiki.example.com",
                 auth="test-key",
                 timeout=60,
                 verify_ssl=False,
-                user_agent="Custom Agent"
+                user_agent="Custom Agent",
             )
-            
+
             assert client.timeout == 60
             assert client.verify_ssl is False
             assert client.user_agent == "Custom Agent"
-    
+
     def test_has_pages_endpoint(self):
         """Test that client has pages endpoint."""
-        with patch('wikijs.client.requests.Session'):
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient("https://wiki.example.com", auth="test-key")
-            
-            assert hasattr(client, 'pages')
+
+            assert hasattr(client, "pages")
             assert client.pages._client is client
 
 
 class TestWikiJSClientTestConnection:
     """Test WikiJSClient connection testing."""
-    
+
     @pytest.fixture
     def mock_wiki_base_url(self):
         """Mock wiki base URL."""
         return "https://wiki.example.com"
-    
+
     @pytest.fixture
     def mock_api_key(self):
         """Mock API key."""
         return "test-api-key-12345"
-    
-    @patch('wikijs.client.requests.Session.get')
+
+    @patch("wikijs.client.requests.Session.get")
     def test_test_connection_success(self, mock_get, mock_wiki_base_url, mock_api_key):
         """Test successful connection test."""
         mock_response = Mock()
         mock_response.status_code = 200
         mock_get.return_value = mock_response
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
         result = client.test_connection()
-        
+
         assert result is True
 
-    @patch('wikijs.client.requests.Session.get')
+    @patch("wikijs.client.requests.Session.get")
     def test_test_connection_timeout(self, mock_get, mock_wiki_base_url, mock_api_key):
         """Test connection test timeout."""
         import requests
+
         mock_get.side_effect = requests.exceptions.Timeout("Request timed out")
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(TimeoutError, match="Connection test timed out"):
             client.test_connection()
 
-    @patch('wikijs.client.requests.Session.get')
+    @patch("wikijs.client.requests.Session.get")
     def test_test_connection_error(self, mock_get, mock_wiki_base_url, mock_api_key):
         """Test connection test with connection error."""
         import requests
+
         mock_get.side_effect = requests.exceptions.ConnectionError("Connection failed")
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(ConnectionError, match="Cannot connect"):
             client.test_connection()
-    
+
     def test_test_connection_no_base_url(self):
         """Test connection test with no base URL."""
-        with patch('wikijs.client.requests.Session'):
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient("https://wiki.example.com", auth="test-key")
             client.base_url = ""  # Simulate empty base URL after creation
-            
+
             with pytest.raises(ConfigurationError, match="Base URL not configured"):
                 client.test_connection()
-    
+
     def test_test_connection_no_auth(self):
         """Test connection test with no auth."""
-        with patch('wikijs.client.requests.Session'):
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient("https://wiki.example.com", auth="test-key")
             client._auth_handler = None  # Simulate no auth
-            
-            with pytest.raises(ConfigurationError, match="Authentication not configured"):
+
+            with pytest.raises(
+                ConfigurationError, match="Authentication not configured"
+            ):
                 client.test_connection()
 
 
 class TestWikiJSClientRequests:
     """Test WikiJSClient HTTP request handling."""
-    
+
     @pytest.fixture
     def mock_wiki_base_url(self):
         """Mock wiki base URL."""
         return "https://wiki.example.com"
-    
+
     @pytest.fixture
     def mock_api_key(self):
         """Mock API key."""
         return "test-api-key-12345"
 
-    @patch('wikijs.client.requests.Session.request')
+    @patch("wikijs.client.requests.Session.request")
     def test_request_success(self, mock_request, mock_wiki_base_url, mock_api_key):
         """Test successful API request."""
         mock_response = Mock()
         mock_response.ok = True
         mock_response.json.return_value = {"data": "test"}
         mock_request.return_value = mock_response
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
         result = client._request("GET", "/test")
-        
+
         assert result == {"data": "test"}
         mock_request.assert_called_once()
 
-    @patch('wikijs.client.requests.Session.request')
-    def test_request_with_json_data(self, mock_request, mock_wiki_base_url, mock_api_key):
+    @patch("wikijs.client.requests.Session.request")
+    def test_request_with_json_data(
+        self, mock_request, mock_wiki_base_url, mock_api_key
+    ):
         """Test API request with JSON data."""
         mock_response = Mock()
         mock_response.ok = True
         mock_response.json.return_value = {"success": True}
         mock_request.return_value = mock_response
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
         result = client._request("POST", "/test", json_data={"title": "Test"})
-        
+
         assert result == {"success": True}
         mock_request.assert_called_once()
 
-    @patch('wikijs.client.requests.Session.request')
-    def test_request_authentication_error(self, mock_request, mock_wiki_base_url, mock_api_key):
+    @patch("wikijs.client.requests.Session.request")
+    def test_request_authentication_error(
+        self, mock_request, mock_wiki_base_url, mock_api_key
+    ):
         """Test request with authentication error."""
         mock_response = Mock()
         mock_response.ok = False
         mock_response.status_code = 401
         mock_request.return_value = mock_response
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(AuthenticationError, match="Authentication failed"):
             client._request("GET", "/test")
 
-    @patch('wikijs.client.requests.Session.request')
+    @patch("wikijs.client.requests.Session.request")
     def test_request_api_error(self, mock_request, mock_wiki_base_url, mock_api_key):
         """Test request with API error."""
         mock_response = Mock()
@@ -195,129 +204,145 @@ class TestWikiJSClientRequests:
         mock_response.status_code = 404
         mock_response.text = "Not found"
         mock_request.return_value = mock_response
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(APIError):
             client._request("GET", "/test")
 
-    @patch('wikijs.client.requests.Session.request')
-    def test_request_invalid_json_response(self, mock_request, mock_wiki_base_url, mock_api_key):
+    @patch("wikijs.client.requests.Session.request")
+    def test_request_invalid_json_response(
+        self, mock_request, mock_wiki_base_url, mock_api_key
+    ):
         """Test request with invalid JSON response."""
         mock_response = Mock()
         mock_response.ok = True
         mock_response.json.side_effect = json.JSONDecodeError("Invalid JSON", "", 0)
         mock_request.return_value = mock_response
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(APIError, match="Invalid JSON response"):
             client._request("GET", "/test")
 
-    @patch('wikijs.client.requests.Session.request')
+    @patch("wikijs.client.requests.Session.request")
     def test_request_timeout(self, mock_request, mock_wiki_base_url, mock_api_key):
         """Test request timeout handling."""
         import requests
+
         mock_request.side_effect = requests.exceptions.Timeout("Request timed out")
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(TimeoutError, match="Request timed out"):
             client._request("GET", "/test")
-    
-    @patch('wikijs.client.requests.Session.request')
-    def test_request_connection_error(self, mock_request, mock_wiki_base_url, mock_api_key):
+
+    @patch("wikijs.client.requests.Session.request")
+    def test_request_connection_error(
+        self, mock_request, mock_wiki_base_url, mock_api_key
+    ):
         """Test request connection error handling."""
         import requests
-        mock_request.side_effect = requests.exceptions.ConnectionError("Connection failed")
-        
+
+        mock_request.side_effect = requests.exceptions.ConnectionError(
+            "Connection failed"
+        )
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(ConnectionError, match="Failed to connect"):
             client._request("GET", "/test")
-    
-    @patch('wikijs.client.requests.Session.request')
-    def test_request_general_exception(self, mock_request, mock_wiki_base_url, mock_api_key):
+
+    @patch("wikijs.client.requests.Session.request")
+    def test_request_general_exception(
+        self, mock_request, mock_wiki_base_url, mock_api_key
+    ):
         """Test request general exception handling."""
         import requests
+
         mock_request.side_effect = requests.exceptions.RequestException("General error")
-        
+
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
-        
+
         with pytest.raises(APIError, match="Request failed"):
             client._request("GET", "/test")
 
 
 class TestWikiJSClientWithDifferentAuth:
     """Test WikiJSClient with different auth types."""
-    
-    @patch('wikijs.client.requests.Session')
+
+    @patch("wikijs.client.requests.Session")
     def test_auth_validation_during_session_creation(self, mock_session_class):
         """Test that auth validation happens during session creation."""
         mock_session = Mock()
         mock_session_class.return_value = mock_session
-        
+
         # Mock auth handler that raises validation error during validation
         from wikijs.auth.base import AuthHandler
         from wikijs.exceptions import AuthenticationError
-        
+
         mock_auth = Mock(spec=AuthHandler)
-        mock_auth.validate_credentials.side_effect = AuthenticationError("Invalid credentials")
+        mock_auth.validate_credentials.side_effect = AuthenticationError(
+            "Invalid credentials"
+        )
         mock_auth.get_headers.return_value = {}
-        
+
         with pytest.raises(AuthenticationError, match="Invalid credentials"):
             WikiJSClient("https://wiki.example.com", auth=mock_auth)
 
 
 class TestWikiJSClientContextManager:
     """Test WikiJSClient context manager functionality."""
-    
-    @patch('wikijs.client.requests.Session')
+
+    @patch("wikijs.client.requests.Session")
     def test_context_manager(self, mock_session_class):
         """Test client as context manager."""
         mock_session = Mock()
         mock_session_class.return_value = mock_session
-        
+
         with WikiJSClient("https://wiki.example.com", auth="test-key") as client:
             assert isinstance(client, WikiJSClient)
-        
+
         # Verify session was closed
         mock_session.close.assert_called_once()
-    
-    @patch('wikijs.client.requests.Session')
+
+    @patch("wikijs.client.requests.Session")
     def test_close_method(self, mock_session_class):
         """Test explicit close method."""
         mock_session = Mock()
         mock_session_class.return_value = mock_session
-        
+
         client = WikiJSClient("https://wiki.example.com", auth="test-key")
         client.close()
-        
+
         mock_session.close.assert_called_once()
-    
-    @patch('wikijs.client.requests.Session')
+
+    @patch("wikijs.client.requests.Session")
     def test_repr(self, mock_session_class):
         """Test string representation."""
         mock_session = Mock()
         mock_session_class.return_value = mock_session
-        
+
         client = WikiJSClient("https://wiki.example.com", auth="test-key")
         repr_str = repr(client)
-        
+
         assert "WikiJSClient" in repr_str
         assert "https://wiki.example.com" in repr_str
-    
-    @patch('wikijs.client.requests.Session')
+
+    @patch("wikijs.client.requests.Session")
     def test_connection_test_generic_exception(self, mock_session_class):
         """Test connection test with generic exception."""
         mock_session = Mock()
         mock_session_class.return_value = mock_session
-        
+
         # Mock generic exception during connection test
         mock_session.get.side_effect = RuntimeError("Unexpected error")
-        
+
         client = WikiJSClient("https://wiki.example.com", auth="test-key")
-        
+
         from wikijs.exceptions import ConnectionError
-        with pytest.raises(ConnectionError, match="Connection test failed: Unexpected error"):
-            client.test_connection()
\ No newline at end of file
+
+        with pytest.raises(
+            ConnectionError, match="Connection test failed: Unexpected error"
+        ):
+            client.test_connection()
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
index c039a64..adadcd2 100644
--- a/tests/test_exceptions.py
+++ b/tests/test_exceptions.py
@@ -1,34 +1,33 @@
 """Tests for exception classes."""
 
-import pytest
 from unittest.mock import Mock
 
 from wikijs.exceptions import (
-    WikiJSException,
     APIError,
-    ClientError,
-    ServerError,
     AuthenticationError,
+    ClientError,
     ConfigurationError,
-    ValidationError,
+    ConnectionError,
     NotFoundError,
     PermissionError,
     RateLimitError,
-    ConnectionError,
+    ServerError,
     TimeoutError,
+    ValidationError,
+    WikiJSException,
     create_api_error,
 )
 
 
 class TestWikiJSException:
     """Test base exception class."""
-    
+
     def test_basic_exception_creation(self):
         """Test basic exception creation."""
         exc = WikiJSException("Test error")
         assert str(exc) == "Test error"
         assert exc.message == "Test error"
-    
+
     def test_exception_with_details(self):
         """Test exception with details."""
         details = {"code": "TEST_ERROR", "field": "title"}
@@ -38,13 +37,13 @@ class TestWikiJSException:
 
 class TestAPIError:
     """Test API error classes."""
-    
+
     def test_api_error_creation(self):
         """Test API error with status code and response."""
         response = Mock()
         response.status_code = 500
         response.text = "Internal server error"
-        
+
         exc = APIError("Server error", status_code=500, response=response)
         assert exc.status_code == 500
         assert exc.response == response
@@ -53,14 +52,14 @@ class TestAPIError:
 
 class TestRateLimitError:
     """Test rate limit error."""
-    
+
     def test_rate_limit_error_with_retry_after(self):
         """Test rate limit error with retry_after parameter."""
         exc = RateLimitError("Rate limit exceeded", retry_after=60)
         assert exc.status_code == 429
         assert exc.retry_after == 60
         assert str(exc) == "Rate limit exceeded"
-    
+
     def test_rate_limit_error_without_retry_after(self):
         """Test rate limit error without retry_after parameter."""
         exc = RateLimitError("Rate limit exceeded")
@@ -70,7 +69,7 @@ class TestRateLimitError:
 
 class TestCreateAPIError:
     """Test create_api_error factory function."""
-    
+
     def test_create_404_error(self):
         """Test creating 404 NotFoundError."""
         response = Mock()
@@ -78,14 +77,14 @@ class TestCreateAPIError:
         assert isinstance(error, NotFoundError)
         assert error.status_code == 404
         assert error.response == response
-    
+
     def test_create_403_error(self):
         """Test creating 403 PermissionError."""
         response = Mock()
         error = create_api_error(403, "Forbidden", response)
         assert isinstance(error, PermissionError)
         assert error.status_code == 403
-    
+
     def test_create_429_error(self):
         """Test creating 429 RateLimitError."""
         response = Mock()
@@ -94,21 +93,21 @@ class TestCreateAPIError:
         assert error.status_code == 429
         # Note: RateLimitError constructor hardcodes status_code=429
         # so it doesn't use the passed status_code parameter
-    
+
     def test_create_400_client_error(self):
         """Test creating generic 400-level ClientError."""
         response = Mock()
         error = create_api_error(400, "Bad request", response)
         assert isinstance(error, ClientError)
         assert error.status_code == 400
-    
+
     def test_create_500_server_error(self):
         """Test creating generic 500-level ServerError."""
         response = Mock()
         error = create_api_error(500, "Server error", response)
         assert isinstance(error, ServerError)
         assert error.status_code == 500
-    
+
     def test_create_unknown_status_error(self):
         """Test creating error with unknown status code."""
         response = Mock()
@@ -119,33 +118,33 @@ class TestCreateAPIError:
 
 class TestSimpleExceptions:
     """Test simple exception classes."""
-    
+
     def test_connection_error(self):
         """Test ConnectionError creation."""
         exc = ConnectionError("Connection failed")
         assert str(exc) == "Connection failed"
         assert isinstance(exc, WikiJSException)
-    
+
     def test_timeout_error(self):
         """Test TimeoutError creation."""
         exc = TimeoutError("Request timed out")
         assert str(exc) == "Request timed out"
         assert isinstance(exc, WikiJSException)
-    
+
     def test_authentication_error(self):
         """Test AuthenticationError creation."""
         exc = AuthenticationError("Invalid credentials")
         assert str(exc) == "Invalid credentials"
         assert isinstance(exc, WikiJSException)
-    
+
     def test_configuration_error(self):
         """Test ConfigurationError creation."""
         exc = ConfigurationError("Invalid config")
         assert str(exc) == "Invalid config"
         assert isinstance(exc, WikiJSException)
-    
+
     def test_validation_error(self):
         """Test ValidationError creation."""
         exc = ValidationError("Invalid input")
         assert str(exc) == "Invalid input"
-        assert isinstance(exc, WikiJSException)
\ No newline at end of file
+        assert isinstance(exc, WikiJSException)
diff --git a/tests/test_integration.py b/tests/test_integration.py
index 5bb68c5..03fdd4d 100644
--- a/tests/test_integration.py
+++ b/tests/test_integration.py
@@ -1,65 +1,66 @@
 """Integration tests for the full WikiJS client with Pages API."""
 
-import pytest
 from unittest.mock import Mock, patch
 
 from wikijs import WikiJSClient
 from wikijs.endpoints.pages import PagesEndpoint
-from wikijs.models.page import Page, PageCreate
+from wikijs.models.page import Page
 
 
 class TestWikiJSClientIntegration:
     """Integration tests for WikiJS client with Pages API."""
-    
+
     def test_client_has_pages_endpoint(self):
         """Test that client has pages endpoint initialized."""
-        with patch('wikijs.client.requests.Session'):
+        with patch("wikijs.client.requests.Session"):
             client = WikiJSClient("https://test.wiki", auth="test-key")
-            
-            assert hasattr(client, 'pages')
+
+            assert hasattr(client, "pages")
             assert isinstance(client.pages, PagesEndpoint)
             assert client.pages._client is client
-    
-    @patch('wikijs.client.requests.Session')
+
+    @patch("wikijs.client.requests.Session")
     def test_client_pages_integration(self, mock_session_class):
         """Test that pages endpoint works through client."""
         # Mock the session and response
         mock_session = Mock()
         mock_session_class.return_value = mock_session
-        
+
         mock_response = Mock()
         mock_response.ok = True
         mock_response.json.return_value = {
             "data": {
-                "pages": [{
-                    "id": 1,
-                    "title": "Test Page",
-                    "path": "test",
-                    "content": "Content",
-                    "isPublished": True,
-                    "isPrivate": False,
-                    "tags": [],
-                    "locale": "en",
-                    "createdAt": "2023-01-01T00:00:00Z",
-                    "updatedAt": "2023-01-01T00:00:00Z"
-                }]
+                "pages": [
+                    {
+                        "id": 1,
+                        "title": "Test Page",
+                        "path": "test",
+                        "content": "Content",
+                        "isPublished": True,
+                        "isPrivate": False,
+                        "tags": [],
+                        "locale": "en",
+                        "createdAt": "2023-01-01T00:00:00Z",
+                        "updatedAt": "2023-01-01T00:00:00Z",
+                    }
+                ]
             }
         }
         mock_session.request.return_value = mock_response
-        
+
         # Create client
         client = WikiJSClient("https://test.wiki", auth="test-key")
-        
+
         # Call pages.list() through client
         pages = client.pages.list()
-        
+
         # Verify it works
         assert len(pages) == 1
         assert isinstance(pages[0], Page)
         assert pages[0].title == "Test Page"
-        
+
         # Verify the request was made
         mock_session.request.assert_called_once()
         call_args = mock_session.request.call_args
         assert call_args[0][0] == "POST"  # GraphQL uses POST
-        assert "/graphql" in call_args[0][1]
\ No newline at end of file
+        assert "/graphql" in call_args[0][1]
diff --git a/tests/utils/__init__.py b/tests/utils/__init__.py
index 1f3a2fe..3d55c80 100644
--- a/tests/utils/__init__.py
+++ b/tests/utils/__init__.py
@@ -1 +1 @@
-"""Tests for utility functions."""
\ No newline at end of file
+"""Tests for utility functions."""
diff --git a/tests/utils/test_helpers.py b/tests/utils/test_helpers.py
index 8cf4ca5..d913952 100644
--- a/tests/utils/test_helpers.py
+++ b/tests/utils/test_helpers.py
@@ -1,50 +1,56 @@
 """Tests for utility helper functions."""
 
-import pytest
 from unittest.mock import Mock
 
+import pytest
+
 from wikijs.exceptions import ValidationError
 from wikijs.utils.helpers import (
-    normalize_url,
-    validate_url,
-    sanitize_path,
     build_api_url,
-    parse_wiki_response,
-    extract_error_message,
     chunk_list,
+    extract_error_message,
+    normalize_url,
+    parse_wiki_response,
     safe_get,
+    sanitize_path,
+    validate_url,
 )
 
 
 class TestNormalizeUrl:
     """Test URL normalization."""
-    
+
     def test_normalize_url_basic(self):
         """Test basic URL normalization."""
         assert normalize_url("https://wiki.example.com") == "https://wiki.example.com"
-    
+
     def test_normalize_url_remove_trailing_slash(self):
         """Test trailing slash removal."""
         assert normalize_url("https://wiki.example.com/") == "https://wiki.example.com"
-    
+
     def test_normalize_url_remove_multiple_trailing_slashes(self):
         """Test multiple trailing slash removal."""
-        assert normalize_url("https://wiki.example.com///") == "https://wiki.example.com"
-    
+        assert (
+            normalize_url("https://wiki.example.com///") == "https://wiki.example.com"
+        )
+
     def test_normalize_url_with_path(self):
         """Test URL with path normalization."""
-        assert normalize_url("https://wiki.example.com/wiki/") == "https://wiki.example.com/wiki"
-    
+        assert (
+            normalize_url("https://wiki.example.com/wiki/")
+            == "https://wiki.example.com/wiki"
+        )
+
     def test_normalize_url_empty(self):
         """Test empty URL raises error."""
         with pytest.raises(ValidationError, match="Base URL cannot be empty"):
             normalize_url("")
-    
+
     def test_normalize_url_none(self):
         """Test None URL raises error."""
         with pytest.raises(ValidationError, match="Base URL cannot be empty"):
             normalize_url(None)
-    
+
     def test_normalize_url_invalid_scheme(self):
         """Test invalid URL scheme gets https:// prepended."""
         # The normalize_url function adds https:// to URLs without checking scheme
@@ -55,49 +61,52 @@ class TestNormalizeUrl:
         """Test invalid URL format raises ValidationError."""
         with pytest.raises(ValidationError, match="Invalid URL format"):
             normalize_url("not a valid url with spaces")
-    
+
     def test_normalize_url_no_scheme(self):
         """Test URL without scheme gets https:// added."""
         result = normalize_url("wiki.example.com")
         assert result == "https://wiki.example.com"
-    
+
     def test_normalize_url_with_port(self):
         """Test URL with port."""
-        assert normalize_url("https://wiki.example.com:8080") == "https://wiki.example.com:8080"
+        assert (
+            normalize_url("https://wiki.example.com:8080")
+            == "https://wiki.example.com:8080"
+        )
 
 
 class TestValidateUrl:
     """Test URL validation."""
-    
+
     def test_validate_url_valid_https(self):
         """Test valid HTTPS URL."""
         assert validate_url("https://wiki.example.com") is True
-    
+
     def test_validate_url_valid_http(self):
         """Test valid HTTP URL."""
         assert validate_url("http://wiki.example.com") is True
-    
+
     def test_validate_url_with_path(self):
         """Test valid URL with path."""
         assert validate_url("https://wiki.example.com/wiki") is True
-    
+
     def test_validate_url_with_port(self):
         """Test valid URL with port."""
         assert validate_url("https://wiki.example.com:8080") is True
-    
+
     def test_validate_url_invalid_scheme(self):
         """Test invalid URL scheme - validate_url only checks format, not scheme type."""
         # validate_url only checks that there's a scheme and netloc, not the scheme type
         assert validate_url("ftp://wiki.example.com") is True
-    
+
     def test_validate_url_no_scheme(self):
         """Test URL without scheme."""
         assert validate_url("wiki.example.com") is False
-    
+
     def test_validate_url_empty(self):
         """Test empty URL."""
         assert validate_url("") is False
-    
+
     def test_validate_url_none(self):
         """Test None URL."""
         assert validate_url(None) is False
@@ -105,24 +114,24 @@ class TestValidateUrl:
 
 class TestSanitizePath:
     """Test path sanitization."""
-    
+
     def test_sanitize_path_basic(self):
         """Test basic path sanitization."""
         assert sanitize_path("simple-path") == "simple-path"
-    
+
     def test_sanitize_path_with_slashes(self):
         """Test path with slashes."""
         assert sanitize_path("/path/to/page/") == "path/to/page"
-    
+
     def test_sanitize_path_multiple_slashes(self):
         """Test path with multiple slashes."""
         assert sanitize_path("//path///to//page//") == "path/to/page"
-    
+
     def test_sanitize_path_empty(self):
         """Test empty path raises error."""
         with pytest.raises(ValidationError, match="Path cannot be empty"):
             sanitize_path("")
-    
+
     def test_sanitize_path_none(self):
         """Test None path raises error."""
         with pytest.raises(ValidationError, match="Path cannot be empty"):
@@ -131,27 +140,27 @@ class TestSanitizePath:
 
 class TestBuildApiUrl:
     """Test API URL building."""
-    
+
     def test_build_api_url_basic(self):
         """Test basic API URL building."""
         result = build_api_url("https://wiki.example.com", "/test")
         assert result == "https://wiki.example.com/test"
-    
+
     def test_build_api_url_with_trailing_slash(self):
         """Test API URL building with trailing slash on base."""
         result = build_api_url("https://wiki.example.com/", "/test")
         assert result == "https://wiki.example.com/test"
-    
+
     def test_build_api_url_without_leading_slash(self):
         """Test API URL building without leading slash on endpoint."""
         result = build_api_url("https://wiki.example.com", "test")
         assert result == "https://wiki.example.com/test"
-    
+
     def test_build_api_url_complex_endpoint(self):
         """Test API URL building with complex endpoint."""
         result = build_api_url("https://wiki.example.com", "/api/v1/pages")
         assert result == "https://wiki.example.com/api/v1/pages"
-    
+
     def test_build_api_url_empty_endpoint(self):
         """Test API URL building with empty endpoint."""
         result = build_api_url("https://wiki.example.com", "")
@@ -160,25 +169,25 @@ class TestBuildApiUrl:
 
 class TestParseWikiResponse:
     """Test Wiki.js response parsing."""
-    
+
     def test_parse_wiki_response_with_data(self):
         """Test parsing response with data field."""
         response = {"data": {"pages": []}, "meta": {"total": 0}}
         result = parse_wiki_response(response)
         assert result == {"data": {"pages": []}, "meta": {"total": 0}}
-    
+
     def test_parse_wiki_response_without_data(self):
         """Test parsing response without data field."""
         response = {"pages": [], "total": 0}
         result = parse_wiki_response(response)
         assert result == {"pages": [], "total": 0}
-    
+
     def test_parse_wiki_response_empty(self):
         """Test parsing empty response."""
         response = {}
         result = parse_wiki_response(response)
         assert result == {}
-    
+
     def test_parse_wiki_response_none(self):
         """Test parsing None response."""
         result = parse_wiki_response(None)
@@ -187,49 +196,49 @@ class TestParseWikiResponse:
 
 class TestExtractErrorMessage:
     """Test error message extraction."""
-    
+
     def test_extract_error_message_json_with_message(self):
         """Test extracting error from JSON response with message."""
         mock_response = Mock()
         mock_response.text = '{"message": "Not found"}'
         mock_response.json.return_value = {"message": "Not found"}
-        
+
         result = extract_error_message(mock_response)
         assert result == "Not found"
-    
+
     def test_extract_error_message_json_with_errors_array(self):
         """Test extracting error from JSON response with error field."""
         mock_response = Mock()
         mock_response.text = '{"error": "Invalid field"}'
         mock_response.json.return_value = {"error": "Invalid field"}
-        
+
         result = extract_error_message(mock_response)
         assert result == "Invalid field"
-    
+
     def test_extract_error_message_json_with_error_string(self):
         """Test extracting error from JSON response with error string."""
         mock_response = Mock()
         mock_response.text = '{"error": "Authentication failed"}'
         mock_response.json.return_value = {"error": "Authentication failed"}
-        
+
         result = extract_error_message(mock_response)
         assert result == "Authentication failed"
-    
+
     def test_extract_error_message_invalid_json(self):
         """Test extracting error from invalid JSON response."""
         mock_response = Mock()
         mock_response.text = "Invalid JSON response"
         mock_response.json.side_effect = ValueError("Invalid JSON")
-        
+
         result = extract_error_message(mock_response)
         assert result == "Invalid JSON response"
-    
+
     def test_extract_error_message_empty_response(self):
         """Test extracting error from empty response."""
         mock_response = Mock()
         mock_response.text = ""
         mock_response.json.side_effect = ValueError("Empty response")
-        
+
         result = extract_error_message(mock_response)
         # Should return either empty string or default error message
         assert result in ["", "Unknown error"]
@@ -237,30 +246,30 @@ class TestExtractErrorMessage:
 
 class TestChunkList:
     """Test list chunking."""
-    
+
     def test_chunk_list_basic(self):
         """Test basic list chunking."""
         items = [1, 2, 3, 4, 5, 6]
         result = chunk_list(items, 2)
         assert result == [[1, 2], [3, 4], [5, 6]]
-    
+
     def test_chunk_list_uneven(self):
         """Test list chunking with uneven division."""
         items = [1, 2, 3, 4, 5]
         result = chunk_list(items, 2)
         assert result == [[1, 2], [3, 4], [5]]
-    
+
     def test_chunk_list_larger_chunk_size(self):
         """Test list chunking with chunk size larger than list."""
         items = [1, 2, 3]
         result = chunk_list(items, 5)
         assert result == [[1, 2, 3]]
-    
+
     def test_chunk_list_empty(self):
         """Test chunking empty list."""
         result = chunk_list([], 2)
         assert result == []
-    
+
     def test_chunk_list_chunk_size_one(self):
         """Test chunking with chunk size of 1."""
         items = [1, 2, 3]
@@ -270,49 +279,49 @@ class TestChunkList:
 
 class TestSafeGet:
     """Test safe dictionary value retrieval."""
-    
+
     def test_safe_get_existing_key(self):
         """Test getting existing key."""
         data = {"key": "value", "nested": {"inner": "data"}}
         assert safe_get(data, "key") == "value"
-    
+
     def test_safe_get_missing_key(self):
         """Test getting missing key with default."""
         data = {"key": "value"}
         assert safe_get(data, "missing") is None
-    
+
     def test_safe_get_missing_key_with_custom_default(self):
         """Test getting missing key with custom default."""
         data = {"key": "value"}
         assert safe_get(data, "missing", "default") == "default"
-    
+
     def test_safe_get_nested_key(self):
         """Test getting nested key (if supported)."""
         data = {"nested": {"inner": "data"}}
         # This might not be supported, but test if it works
         result = safe_get(data, "nested")
         assert result == {"inner": "data"}
-    
+
     def test_safe_get_empty_dict(self):
         """Test getting from empty dictionary."""
         assert safe_get({}, "key") is None
-    
+
     def test_safe_get_none_data(self):
         """Test getting from None data."""
         with pytest.raises(AttributeError):
             safe_get(None, "key")
-    
+
     def test_safe_get_dot_notation(self):
         """Test safe_get with dot notation."""
         data = {"user": {"profile": {"name": "John"}}}
         assert safe_get(data, "user.profile.name") == "John"
-    
+
     def test_safe_get_dot_notation_missing(self):
         """Test safe_get with dot notation for missing key."""
         data = {"user": {"profile": {"name": "John"}}}
         assert safe_get(data, "user.missing.name") is None
         assert safe_get(data, "user.missing.name", "default") == "default"
-    
+
     def test_safe_get_dot_notation_non_dict(self):
         """Test safe_get with dot notation when intermediate value is not dict."""
         data = {"user": "not_a_dict"}
@@ -321,121 +330,129 @@ class TestSafeGet:
 
 class TestUtilityEdgeCases:
     """Test edge cases for utility functions."""
-    
+
     def test_validate_url_with_none(self):
         """Test validate_url with None input."""
         assert validate_url(None) is False
-    
+
     def test_validate_url_with_exception(self):
         """Test validate_url when urlparse raises exception."""
         # This is hard to trigger, but test the exception path
         assert validate_url("") is False
-        
+
     def test_validate_url_malformed_url(self):
         """Test validate_url with malformed URL that causes exception."""
         # Test with a string that could cause urlparse to raise an exception
-        import sys
         from unittest.mock import patch
-        
-        with patch('wikijs.utils.helpers.urlparse') as mock_urlparse:
+
+        with patch("wikijs.utils.helpers.urlparse") as mock_urlparse:
             mock_urlparse.side_effect = Exception("Parse error")
             assert validate_url("http://example.com") is False
-    
+
     def test_sanitize_path_whitespace_only(self):
         """Test sanitize_path with whitespace-only input."""
         # Whitespace gets stripped and then triggers the empty path check
         with pytest.raises(ValidationError, match="Path contains no valid characters"):
             sanitize_path("   ")
-    
+
     def test_sanitize_path_invalid_characters_only(self):
         """Test sanitize_path with only invalid characters."""
         with pytest.raises(ValidationError, match="Path contains no valid characters"):
             sanitize_path("!@#$%^&*()")
-    
+
     def test_sanitize_path_complex_cleanup(self):
         """Test sanitize_path with complex cleanup needs."""
         result = sanitize_path("  //hello    world//test//  ")
         assert result == "hello-world/test"
-    
+
     def test_parse_wiki_response_with_error_dict(self):
         """Test parse_wiki_response with error dict."""
         response = {"error": {"message": "Not found", "code": "404"}}
-        
+
         from wikijs.exceptions import APIError
+
         with pytest.raises(APIError, match="API Error: Not found"):
             parse_wiki_response(response)
-    
+
     def test_parse_wiki_response_with_error_string(self):
         """Test parse_wiki_response with error string."""
         response = {"error": "Simple error message"}
-        
+
         from wikijs.exceptions import APIError
+
         with pytest.raises(APIError, match="API Error: Simple error message"):
             parse_wiki_response(response)
-    
+
     def test_parse_wiki_response_with_errors_array(self):
         """Test parse_wiki_response with errors array."""
-        response = {"errors": [{"message": "GraphQL error"}, {"message": "Another error"}]}
-        
+        response = {
+            "errors": [
+                {"message": "GraphQL error"},
+                {"message": "Another error"},
+            ]
+        }
+
         from wikijs.exceptions import APIError
+
         with pytest.raises(APIError, match="GraphQL Error: GraphQL error"):
             parse_wiki_response(response)
-    
+
     def test_parse_wiki_response_with_non_dict_errors(self):
         """Test parse_wiki_response with non-dict errors."""
         response = {"errors": "String error"}
-        
+
         from wikijs.exceptions import APIError
+
         with pytest.raises(APIError, match="GraphQL Error: String error"):
             parse_wiki_response(response)
-    
+
     def test_parse_wiki_response_non_dict_input(self):
         """Test parse_wiki_response with non-dict input."""
         assert parse_wiki_response("string") == "string"
         assert parse_wiki_response(42) == 42
         assert parse_wiki_response([1, 2, 3]) == [1, 2, 3]
-    
+
     def test_extract_error_message_with_nested_error(self):
         """Test extract_error_message with nested error structures."""
         mock_response = Mock()
         mock_response.text = '{"detail": "Validation failed"}'
         mock_response.json.return_value = {"detail": "Validation failed"}
-        
+
         result = extract_error_message(mock_response)
         assert result == "Validation failed"
-    
+
     def test_extract_error_message_with_msg_field(self):
         """Test extract_error_message with msg field."""
         mock_response = Mock()
         mock_response.text = '{"msg": "Short message"}'
         mock_response.json.return_value = {"msg": "Short message"}
-        
+
         result = extract_error_message(mock_response)
         assert result == "Short message"
-    
+
     def test_extract_error_message_long_text(self):
         """Test extract_error_message with very long response text."""
         long_text = "x" * 250  # Longer than 200 chars
         mock_response = Mock()
         mock_response.text = long_text
         mock_response.json.side_effect = ValueError("Invalid JSON")
-        
+
         result = extract_error_message(mock_response)
         assert len(result) == 203  # 200 chars + "..."
         assert result.endswith("...")
-    
+
     def test_extract_error_message_no_json_no_text(self):
         """Test extract_error_message with object that has neither json nor text."""
         obj = "simple string"
         result = extract_error_message(obj)
         assert result == "simple string"
-    
+
     def test_chunk_list_zero_chunk_size(self):
         """Test chunk_list with zero chunk size."""
         with pytest.raises(ValueError, match="Chunk size must be positive"):
             chunk_list([1, 2, 3], 0)
-    
+
     def test_chunk_list_negative_chunk_size(self):
         """Test chunk_list with negative chunk size."""
         with pytest.raises(ValueError, match="Chunk size must be positive"):
-            chunk_list([1, 2, 3], -1)
\ No newline at end of file
+            chunk_list([1, 2, 3], -1)
diff --git a/wikijs/__init__.py b/wikijs/__init__.py
index ecaaf7b..d6754c3 100644
--- a/wikijs/__init__.py
+++ b/wikijs/__init__.py
@@ -5,11 +5,11 @@ instances, including support for pages, users, groups, and system management.
 
 Example:
     Basic usage:
-    
+
     >>> from wikijs import WikiJSClient
     >>> client = WikiJSClient('https://wiki.example.com', auth='your-api-key')
     >>> # API endpoints will be available as development progresses
-    
+
 Features:
     - Type-safe data models with validation
     - Comprehensive error handling
@@ -18,21 +18,21 @@ Features:
     - Context manager support for resource cleanup
 """
 
-from .auth import AuthHandler, NoAuth, APIKeyAuth, JWTAuth
+from .auth import APIKeyAuth, AuthHandler, JWTAuth, NoAuth
 from .client import WikiJSClient
 from .exceptions import (
-    WikiJSException,
     APIError,
     AuthenticationError,
-    ConfigurationError,
-    ValidationError,
     ClientError,
-    ServerError,
+    ConfigurationError,
+    ConnectionError,
     NotFoundError,
     PermissionError,
     RateLimitError,
-    ConnectionError,
+    ServerError,
     TimeoutError,
+    ValidationError,
+    WikiJSException,
 )
 from .models import BaseModel, Page, PageCreate, PageUpdate
 from .version import __version__, __version_info__
@@ -41,33 +41,29 @@ from .version import __version__, __version_info__
 __all__ = [
     # Main client
     "WikiJSClient",
-    
     # Authentication
     "AuthHandler",
     "NoAuth",
-    "APIKeyAuth", 
+    "APIKeyAuth",
     "JWTAuth",
-    
     # Data models
     "BaseModel",
-    "Page", 
+    "Page",
     "PageCreate",
     "PageUpdate",
-    
     # Exceptions
     "WikiJSException",
     "APIError",
-    "AuthenticationError", 
+    "AuthenticationError",
     "ConfigurationError",
     "ValidationError",
     "ClientError",
-    "ServerError", 
+    "ServerError",
     "NotFoundError",
     "PermissionError",
     "RateLimitError",
     "ConnectionError",
     "TimeoutError",
-    
     # Version info
     "__version__",
     "__version_info__",
@@ -81,4 +77,10 @@ __description__ = "Professional Python SDK for Wiki.js API integration"
 __url__ = "https://github.com/yourusername/wikijs-python-sdk"
 
 # For type checking
-__all__ += ["__author__", "__email__", "__license__", "__description__", "__url__"]
\ No newline at end of file
+__all__ += [
+    "__author__",
+    "__email__",
+    "__license__",
+    "__description__",
+    "__url__",
+]
diff --git a/wikijs/auth/__init__.py b/wikijs/auth/__init__.py
index f5f0aa1..f5a4777 100644
--- a/wikijs/auth/__init__.py
+++ b/wikijs/auth/__init__.py
@@ -9,13 +9,13 @@ Supported authentication methods:
 - No authentication for testing (NoAuth)
 """
 
-from .base import AuthHandler, NoAuth
 from .api_key import APIKeyAuth
+from .base import AuthHandler, NoAuth
 from .jwt import JWTAuth
 
 __all__ = [
     "AuthHandler",
-    "NoAuth", 
+    "NoAuth",
     "APIKeyAuth",
     "JWTAuth",
-]
\ No newline at end of file
+]
diff --git a/wikijs/auth/api_key.py b/wikijs/auth/api_key.py
index ea47e08..c159d0a 100644
--- a/wikijs/auth/api_key.py
+++ b/wikijs/auth/api_key.py
@@ -4,20 +4,20 @@ This module implements API key authentication for Wiki.js instances.
 API keys are typically used for server-to-server authentication.
 """
 
-from typing import Dict, Optional
+from typing import Dict
 
 from .base import AuthHandler
 
 
 class APIKeyAuth(AuthHandler):
     """API key authentication handler for Wiki.js.
-    
+
     This handler implements authentication using an API key, which is
     included in the Authorization header as a Bearer token.
-    
+
     Args:
         api_key: The API key string from Wiki.js admin panel.
-        
+
     Example:
         >>> auth = APIKeyAuth("your-api-key-here")
         >>> client = WikiJSClient("https://wiki.example.com", auth=auth)
@@ -25,35 +25,35 @@ class APIKeyAuth(AuthHandler):
 
     def __init__(self, api_key: str) -> None:
         """Initialize API key authentication.
-        
+
         Args:
             api_key: The API key from Wiki.js admin panel.
-            
+
         Raises:
             ValueError: If api_key is empty or None.
         """
         if not api_key or not api_key.strip():
             raise ValueError("API key cannot be empty")
-        
+
         self._api_key = api_key.strip()
 
     def get_headers(self) -> Dict[str, str]:
         """Get authentication headers with API key.
-        
+
         Returns:
             Dict[str, str]: Headers containing the Authorization header.
         """
         return {
             "Authorization": f"Bearer {self._api_key}",
-            "Content-Type": "application/json"
+            "Content-Type": "application/json",
         }
 
     def is_valid(self) -> bool:
         """Check if API key is valid.
-        
+
         For API keys, we assume they're valid if they're not empty.
         Actual validation happens on the server side.
-        
+
         Returns:
             bool: True if API key exists, False otherwise.
         """
@@ -61,29 +61,30 @@ class APIKeyAuth(AuthHandler):
 
     def refresh(self) -> None:
         """Refresh authentication credentials.
-        
+
         API keys don't typically need refreshing, so this is a no-op.
         If the API key becomes invalid, a new one must be provided.
         """
         # API keys don't refresh - they're static until manually replaced
-        pass
 
     @property
     def api_key(self) -> str:
         """Get the masked API key for logging/debugging.
-        
+
         Returns:
             str: Masked API key showing only first 4 and last 4 characters.
         """
         if len(self._api_key) <= 8:
             return "*" * len(self._api_key)
-        
-        return f"{self._api_key[:4]}{'*' * (len(self._api_key) - 8)}{self._api_key[-4:]}"
+
+        return (
+            f"{self._api_key[:4]}{'*' * (len(self._api_key) - 8)}{self._api_key[-4:]}"
+        )
 
     def __repr__(self) -> str:
         """String representation of the auth handler.
-        
+
         Returns:
             str: Safe representation with masked API key.
         """
-        return f"APIKeyAuth(api_key='{self.api_key}')"
\ No newline at end of file
+        return f"APIKeyAuth(api_key='{self.api_key}')"
diff --git a/wikijs/auth/base.py b/wikijs/auth/base.py
index 93cc6b9..fd85469 100644
--- a/wikijs/auth/base.py
+++ b/wikijs/auth/base.py
@@ -5,12 +5,12 @@ providing a consistent interface for different authentication methods.
 """
 
 from abc import ABC, abstractmethod
-from typing import Dict, Optional
+from typing import Dict
 
 
 class AuthHandler(ABC):
     """Abstract base class for Wiki.js authentication handlers.
-    
+
     This class defines the interface that all authentication implementations
     must follow, ensuring consistent behavior across different auth methods.
     """
@@ -18,56 +18,54 @@ class AuthHandler(ABC):
     @abstractmethod
     def get_headers(self) -> Dict[str, str]:
         """Get authentication headers for HTTP requests.
-        
+
         Returns:
             Dict[str, str]: Dictionary of headers to include in requests.
-            
+
         Raises:
             AuthenticationError: If authentication is invalid or expired.
         """
-        pass
 
     @abstractmethod
     def is_valid(self) -> bool:
         """Check if the current authentication is valid.
-        
+
         Returns:
             bool: True if authentication is valid, False otherwise.
         """
-        pass
 
     @abstractmethod
     def refresh(self) -> None:
         """Refresh the authentication if possible.
-        
+
         For token-based authentication, this should refresh the token.
         For API key authentication, this is typically a no-op.
-        
+
         Raises:
             AuthenticationError: If refresh fails.
         """
-        pass
 
     def validate_credentials(self) -> None:
         """Validate credentials and refresh if necessary.
-        
+
         This is a convenience method that checks validity and refreshes
         if needed. Subclasses can override for custom behavior.
-        
+
         Raises:
             AuthenticationError: If credentials are invalid or refresh fails.
         """
         if not self.is_valid():
             self.refresh()
-        
+
         if not self.is_valid():
             from ..exceptions import AuthenticationError
+
             raise AuthenticationError("Authentication credentials are invalid")
 
 
 class NoAuth(AuthHandler):
     """No-authentication handler for testing or public instances.
-    
+
     This handler provides an empty authentication implementation,
     useful for testing or when accessing public Wiki.js instances
     that don't require authentication.
@@ -75,7 +73,7 @@ class NoAuth(AuthHandler):
 
     def get_headers(self) -> Dict[str, str]:
         """Return empty headers dict.
-        
+
         Returns:
             Dict[str, str]: Empty dictionary.
         """
@@ -83,7 +81,7 @@ class NoAuth(AuthHandler):
 
     def is_valid(self) -> bool:
         """Always return True for no-auth.
-        
+
         Returns:
             bool: Always True.
         """
@@ -91,7 +89,6 @@ class NoAuth(AuthHandler):
 
     def refresh(self) -> None:
         """No-op for no-auth.
-        
+
         This method does nothing since there's no authentication to refresh.
         """
-        pass
\ No newline at end of file
diff --git a/wikijs/auth/jwt.py b/wikijs/auth/jwt.py
index ec1f1f0..2fdd236 100644
--- a/wikijs/auth/jwt.py
+++ b/wikijs/auth/jwt.py
@@ -5,7 +5,7 @@ JWT tokens are typically used for user-based authentication and have expiration
 """
 
 import time
-from datetime import datetime, timedelta
+from datetime import timedelta
 from typing import Dict, Optional
 
 from .base import AuthHandler
@@ -13,39 +13,39 @@ from .base import AuthHandler
 
 class JWTAuth(AuthHandler):
     """JWT token authentication handler for Wiki.js.
-    
+
     This handler manages JWT tokens with automatic refresh capabilities.
     JWT tokens typically expire and need to be refreshed periodically.
-    
+
     Args:
         token: The JWT token string.
         refresh_token: Optional refresh token for automatic renewal.
         expires_at: Optional expiration timestamp (Unix timestamp).
-        
+
     Example:
         >>> auth = JWTAuth("eyJ0eXAiOiJKV1QiLCJhbGc...")
         >>> client = WikiJSClient("https://wiki.example.com", auth=auth)
     """
 
     def __init__(
-        self, 
-        token: str, 
+        self,
+        token: str,
         refresh_token: Optional[str] = None,
-        expires_at: Optional[float] = None
+        expires_at: Optional[float] = None,
     ) -> None:
         """Initialize JWT authentication.
-        
+
         Args:
             token: The JWT token string.
             refresh_token: Optional refresh token for automatic renewal.
             expires_at: Optional expiration timestamp (Unix timestamp).
-            
+
         Raises:
             ValueError: If token is empty or None.
         """
         if not token or not token.strip():
             raise ValueError("JWT token cannot be empty")
-        
+
         self._token = token.strip()
         self._refresh_token = refresh_token.strip() if refresh_token else None
         self._expires_at = expires_at
@@ -53,66 +53,66 @@ class JWTAuth(AuthHandler):
 
     def get_headers(self) -> Dict[str, str]:
         """Get authentication headers with JWT token.
-        
+
         Automatically attempts to refresh the token if it's expired.
-        
+
         Returns:
             Dict[str, str]: Headers containing the Authorization header.
-            
+
         Raises:
             AuthenticationError: If token is expired and cannot be refreshed.
         """
         # Try to refresh if token is near expiration
         if not self.is_valid():
             self.refresh()
-        
+
         return {
             "Authorization": f"Bearer {self._token}",
-            "Content-Type": "application/json"
+            "Content-Type": "application/json",
         }
 
     def is_valid(self) -> bool:
         """Check if JWT token is valid and not expired.
-        
+
         Returns:
             bool: True if token exists and is not expired, False otherwise.
         """
         if not self._token or not self._token.strip():
             return False
-        
+
         # If no expiration time is set, assume token is valid
         if self._expires_at is None:
             return True
-        
+
         # Check if token is expired (with buffer for refresh)
         current_time = time.time()
         return current_time < (self._expires_at - self._refresh_buffer)
 
     def refresh(self) -> None:
         """Refresh the JWT token using the refresh token.
-        
+
         This method attempts to refresh the JWT token using the refresh token.
         If no refresh token is available, it raises an AuthenticationError.
-        
+
         Note: This is a placeholder implementation. In a real implementation,
         this would make an HTTP request to the Wiki.js token refresh endpoint.
-        
+
         Raises:
             AuthenticationError: If refresh token is not available or refresh fails.
         """
         from ..exceptions import AuthenticationError
-        
+
         if not self._refresh_token:
             raise AuthenticationError(
                 "JWT token expired and no refresh token available"
             )
-        
+
         # TODO: Implement actual token refresh logic
         # This would typically involve:
         # 1. Making a POST request to /auth/refresh endpoint
         # 2. Sending the refresh token
         # 3. Updating self._token and self._expires_at with the response
-        
+
         raise AuthenticationError(
             "JWT token refresh not yet implemented. "
             "Please provide a new token or use API key authentication."
@@ -120,46 +120,46 @@ class JWTAuth(AuthHandler):
 
     def is_expired(self) -> bool:
         """Check if the JWT token is expired.
-        
+
         Returns:
             bool: True if token is expired, False otherwise.
         """
         if self._expires_at is None:
             return False
-        
+
         return time.time() >= self._expires_at
 
     def time_until_expiry(self) -> Optional[timedelta]:
         """Get time until token expires.
-        
+
         Returns:
             Optional[timedelta]: Time until expiration, or None if no expiration set.
         """
         if self._expires_at is None:
             return None
-        
+
         remaining_seconds = self._expires_at - time.time()
         return timedelta(seconds=max(0, remaining_seconds))
 
     @property
     def token_preview(self) -> str:
         """Get a preview of the JWT token for logging/debugging.
-        
+
         Returns:
             str: Masked token showing only first and last few characters.
         """
         if not self._token:
             return "None"
-        
+
         if len(self._token) <= 20:
             return "*" * len(self._token)
-        
+
         return f"{self._token[:10]}...{self._token[-10:]}"
 
     def __repr__(self) -> str:
         """String representation of the auth handler.
-        
+
         Returns:
             str: Safe representation with masked token.
         """
-        return f"JWTAuth(token='{self.token_preview}', expires_at={self._expires_at})"
\ No newline at end of file
+        return f"JWTAuth(token='{self.token_preview}', expires_at={self._expires_at})"
diff --git a/wikijs/client.py b/wikijs/client.py
index e71f70d..64067ba 100644
--- a/wikijs/client.py
+++ b/wikijs/client.py
@@ -7,7 +7,7 @@ import requests
 from requests.adapters import HTTPAdapter
 from urllib3.util.retry import Retry
 
-from .auth import AuthHandler, APIKeyAuth
+from .auth import APIKeyAuth, AuthHandler
 from .endpoints import PagesEndpoint
 from .exceptions import (
     APIError,
@@ -17,36 +17,41 @@ from .exceptions import (
     TimeoutError,
     create_api_error,
 )
-from .utils import normalize_url, build_api_url, parse_wiki_response, extract_error_message
+from .utils import (
+    build_api_url,
+    extract_error_message,
+    normalize_url,
+    parse_wiki_response,
+)
 
 
 class WikiJSClient:
     """Main client for interacting with Wiki.js API.
-    
+
     This client provides a high-level interface for all Wiki.js API operations
     including pages, users, groups, and system management. It handles authentication,
     error handling, and response parsing automatically.
-    
+
     Args:
         base_url: The base URL of your Wiki.js instance
         auth: Authentication (API key string or auth handler)
         timeout: Request timeout in seconds (default: 30)
         verify_ssl: Whether to verify SSL certificates (default: True)
         user_agent: Custom User-Agent header
-        
+
     Example:
         Basic usage with API key:
-        
+
         >>> client = WikiJSClient('https://wiki.example.com', auth='your-api-key')
         >>> pages = client.pages.list()
         >>> page = client.pages.get(123)
-        
+
     Attributes:
         base_url: The normalized base URL
         timeout: Request timeout setting
         verify_ssl: SSL verification setting
     """
-    
+
     def __init__(
         self,
         base_url: str,
@@ -57,7 +62,7 @@ class WikiJSClient:
     ):
         # Validate and normalize base URL
         self.base_url = normalize_url(base_url)
-        
+
         # Store authentication
         if isinstance(auth, str):
             # Convert string API key to APIKeyAuth handler
@@ -69,77 +74,86 @@ class WikiJSClient:
             raise ConfigurationError(
                 f"Invalid auth parameter: expected str or AuthHandler, got {type(auth)}"
             )
-        
+
         # Request configuration
         self.timeout = timeout
         self.verify_ssl = verify_ssl
-        self.user_agent = user_agent or f"wikijs-python-sdk/0.1.0"
-        
+        self.user_agent = user_agent or "wikijs-python-sdk/0.1.0"
+
         # Initialize HTTP session
         self._session = self._create_session()
-        
+
         # Endpoint handlers
         self.pages = PagesEndpoint(self)
         # Future endpoints:
         # self.users = UsersEndpoint(self)
         # self.groups = GroupsEndpoint(self)
-    
+
     def _create_session(self) -> requests.Session:
         """Create configured HTTP session with retry strategy.
-        
+
         Returns:
             Configured requests session
         """
         session = requests.Session()
-        
+
         # Configure retry strategy
         retry_strategy = Retry(
             total=3,
             backoff_factor=1,
             status_forcelist=[429, 500, 502, 503, 504],
-            allowed_methods=["HEAD", "GET", "OPTIONS", "POST", "PUT", "DELETE"],
+            allowed_methods=[
+                "HEAD",
+                "GET",
+                "OPTIONS",
+                "POST",
+                "PUT",
+                "DELETE",
+            ],
         )
-        
+
         adapter = HTTPAdapter(max_retries=retry_strategy)
         session.mount("http://", adapter)
         session.mount("https://", adapter)
-        
+
         # Set default headers
-        session.headers.update({
-            "User-Agent": self.user_agent,
-            "Accept": "application/json",
-            "Content-Type": "application/json",
-        })
-        
+        session.headers.update(
+            {
+                "User-Agent": self.user_agent,
+                "Accept": "application/json",
+                "Content-Type": "application/json",
+            }
+        )
+
         # Set authentication headers
         if self._auth_handler:
             # Validate auth and get headers
             self._auth_handler.validate_credentials()
             auth_headers = self._auth_handler.get_headers()
             session.headers.update(auth_headers)
-        
+
         return session
-    
+
     def _request(
         self,
         method: str,
         endpoint: str,
         params: Optional[Dict[str, Any]] = None,
         json_data: Optional[Dict[str, Any]] = None,
-        **kwargs
+        **kwargs,
     ) -> Dict[str, Any]:
         """Make HTTP request to Wiki.js API.
-        
+
         Args:
             method: HTTP method (GET, POST, PUT, DELETE)
             endpoint: API endpoint path
             params: Query parameters
             json_data: JSON data for request body
             **kwargs: Additional request parameters
-            
+
         Returns:
             Parsed response data
-            
+
         Raises:
             AuthenticationError: If authentication fails
             APIError: If API returns an error
@@ -148,44 +162,44 @@ class WikiJSClient:
         """
         # Build full URL
         url = build_api_url(self.base_url, endpoint)
-        
+
         # Prepare request arguments
         request_kwargs = {
             "timeout": self.timeout,
             "verify": self.verify_ssl,
             "params": params,
-            **kwargs
+            **kwargs,
         }
-        
+
         # Add JSON data if provided
         if json_data is not None:
             request_kwargs["json"] = json_data
-        
+
         try:
             # Make request
             response = self._session.request(method, url, **request_kwargs)
-            
+
             # Handle response
             return self._handle_response(response)
-            
+
         except requests.exceptions.Timeout as e:
             raise TimeoutError(f"Request timed out after {self.timeout} seconds") from e
-        
+
         except requests.exceptions.ConnectionError as e:
             raise ConnectionError(f"Failed to connect to {self.base_url}") from e
-        
+
         except requests.exceptions.RequestException as e:
             raise APIError(f"Request failed: {str(e)}") from e
-    
+
     def _handle_response(self, response: requests.Response) -> Dict[str, Any]:
         """Handle HTTP response and extract data.
-        
+
         Args:
             response: HTTP response object
-            
+
         Returns:
             Parsed response data
-            
+
         Raises:
             AuthenticationError: If authentication fails (401)
             APIError: If API returns an error
@@ -193,31 +207,27 @@ class WikiJSClient:
         # Handle authentication errors
         if response.status_code == 401:
             raise AuthenticationError("Authentication failed - check your API key")
-        
+
         # Handle other HTTP errors
         if not response.ok:
             error_message = extract_error_message(response)
-            raise create_api_error(
-                response.status_code,
-                error_message,
-                response
-            )
-        
+            raise create_api_error(response.status_code, error_message, response)
+
         # Parse JSON response
         try:
             data = response.json()
         except json.JSONDecodeError as e:
             raise APIError(f"Invalid JSON response: {str(e)}") from e
-        
+
         # Parse Wiki.js specific response format
         return parse_wiki_response(data)
-    
+
     def test_connection(self) -> bool:
         """Test connection to Wiki.js instance.
-        
+
         Returns:
             True if connection successful
-            
+
         Raises:
             ConfigurationError: If client is not properly configured
             ConnectionError: If cannot connect to server
@@ -225,42 +235,42 @@ class WikiJSClient:
         """
         if not self.base_url:
             raise ConfigurationError("Base URL not configured")
-        
+
         if not self._auth_handler:
             raise ConfigurationError("Authentication not configured")
-        
+
         try:
             # Try to hit a basic endpoint (will implement with actual endpoints)
             # For now, just test basic connectivity
-            response = self._session.get(
-                self.base_url,
-                timeout=self.timeout,
-                verify=self.verify_ssl
+            self._session.get(
+                self.base_url, timeout=self.timeout, verify=self.verify_ssl
             )
             return True
-            
+
         except requests.exceptions.Timeout:
-            raise TimeoutError(f"Connection test timed out after {self.timeout} seconds")
-        
+            raise TimeoutError(
+                f"Connection test timed out after {self.timeout} seconds"
+            )
+
         except requests.exceptions.ConnectionError as e:
             raise ConnectionError(f"Cannot connect to {self.base_url}: {str(e)}")
-        
+
         except Exception as e:
             raise ConnectionError(f"Connection test failed: {str(e)}")
-    
+
     def __enter__(self):
         """Context manager entry."""
         return self
-    
+
     def __exit__(self, exc_type, exc_val, exc_tb):
         """Context manager exit - close session."""
         self.close()
-    
+
     def close(self):
         """Close the HTTP session and clean up resources."""
         if self._session:
             self._session.close()
-    
+
     def __repr__(self) -> str:
         """String representation of client."""
-        return f"WikiJSClient(base_url='{self.base_url}')"
\ No newline at end of file
+        return f"WikiJSClient(base_url='{self.base_url}')"
diff --git a/wikijs/endpoints/__init__.py b/wikijs/endpoints/__init__.py
index 20bfea4..7c0d607 100644
--- a/wikijs/endpoints/__init__.py
+++ b/wikijs/endpoints/__init__.py
@@ -19,4 +19,4 @@ from .pages import PagesEndpoint
 __all__ = [
     "BaseEndpoint",
     "PagesEndpoint",
-]
\ No newline at end of file
+]
diff --git a/wikijs/endpoints/base.py b/wikijs/endpoints/base.py
index ae4e2ca..8d1a2ac 100644
--- a/wikijs/endpoints/base.py
+++ b/wikijs/endpoints/base.py
@@ -1,6 +1,6 @@
 """Base endpoint class for wikijs-python-sdk."""
 
-from typing import Any, Dict, List, Optional, TYPE_CHECKING
+from typing import TYPE_CHECKING, Any, Dict, Optional
 
 if TYPE_CHECKING:
     from ..client import WikiJSClient
@@ -8,39 +8,39 @@ if TYPE_CHECKING:
 
 class BaseEndpoint:
     """Base class for all API endpoints.
-    
+
     This class provides common functionality for making API requests
     and handling responses across all endpoint implementations.
-    
+
     Args:
         client: The WikiJS client instance
     """
-    
+
     def __init__(self, client: "WikiJSClient"):
         """Initialize endpoint with client reference.
-        
+
         Args:
             client: WikiJS client instance
         """
         self._client = client
-    
+
     def _request(
         self,
         method: str,
         endpoint: str,
         params: Optional[Dict[str, Any]] = None,
         json_data: Optional[Dict[str, Any]] = None,
-        **kwargs
+        **kwargs,
     ) -> Dict[str, Any]:
         """Make HTTP request through the client.
-        
+
         Args:
             method: HTTP method (GET, POST, PUT, DELETE)
             endpoint: API endpoint path
             params: Query parameters
             json_data: JSON data for request body
             **kwargs: Additional request parameters
-            
+
         Returns:
             Parsed response data
         """
@@ -49,94 +49,92 @@ class BaseEndpoint:
             endpoint=endpoint,
             params=params,
             json_data=json_data,
-            **kwargs
+            **kwargs,
         )
-    
+
     def _get(
-        self,
-        endpoint: str,
-        params: Optional[Dict[str, Any]] = None,
-        **kwargs
+        self, endpoint: str, params: Optional[Dict[str, Any]] = None, **kwargs
     ) -> Dict[str, Any]:
         """Make GET request.
-        
+
         Args:
             endpoint: API endpoint path
             params: Query parameters
             **kwargs: Additional request parameters
-            
+
         Returns:
             Parsed response data
         """
         return self._request("GET", endpoint, params=params, **kwargs)
-    
+
     def _post(
         self,
         endpoint: str,
         json_data: Optional[Dict[str, Any]] = None,
         params: Optional[Dict[str, Any]] = None,
-        **kwargs
+        **kwargs,
     ) -> Dict[str, Any]:
         """Make POST request.
-        
+
         Args:
             endpoint: API endpoint path
             json_data: JSON data for request body
             params: Query parameters
             **kwargs: Additional request parameters
-            
+
         Returns:
             Parsed response data
         """
-        return self._request("POST", endpoint, params=params, json_data=json_data, **kwargs)
-    
+        return self._request(
+            "POST", endpoint, params=params, json_data=json_data, **kwargs
+        )
+
     def _put(
         self,
         endpoint: str,
         json_data: Optional[Dict[str, Any]] = None,
         params: Optional[Dict[str, Any]] = None,
-        **kwargs
+        **kwargs,
     ) -> Dict[str, Any]:
         """Make PUT request.
-        
+
         Args:
             endpoint: API endpoint path
             json_data: JSON data for request body
             params: Query parameters
             **kwargs: Additional request parameters
-            
+
         Returns:
             Parsed response data
         """
-        return self._request("PUT", endpoint, params=params, json_data=json_data, **kwargs)
-    
+        return self._request(
+            "PUT", endpoint, params=params, json_data=json_data, **kwargs
+        )
+
     def _delete(
-        self,
-        endpoint: str,
-        params: Optional[Dict[str, Any]] = None,
-        **kwargs
+        self, endpoint: str, params: Optional[Dict[str, Any]] = None, **kwargs
     ) -> Dict[str, Any]:
         """Make DELETE request.
-        
+
         Args:
             endpoint: API endpoint path
             params: Query parameters
             **kwargs: Additional request parameters
-            
+
         Returns:
             Parsed response data
         """
         return self._request("DELETE", endpoint, params=params, **kwargs)
-    
+
     def _build_endpoint(self, *parts: str) -> str:
         """Build endpoint path from parts.
-        
+
         Args:
             *parts: Path components
-            
+
         Returns:
             Formatted endpoint path
         """
         # Remove empty parts and join with /
         clean_parts = [str(part).strip("/") for part in parts if part]
-        return "/" + "/".join(clean_parts)
\ No newline at end of file
+        return "/" + "/".join(clean_parts)
diff --git a/wikijs/endpoints/pages.py b/wikijs/endpoints/pages.py
index 882fb82..97633ac 100644
--- a/wikijs/endpoints/pages.py
+++ b/wikijs/endpoints/pages.py
@@ -9,20 +9,20 @@ from .base import BaseEndpoint
 
 class PagesEndpoint(BaseEndpoint):
     """Endpoint for Wiki.js Pages API operations.
-    
+
     This endpoint provides methods for creating, reading, updating, and deleting
     wiki pages through the Wiki.js GraphQL API.
-    
+
     Example:
         >>> client = WikiJSClient('https://wiki.example.com', auth='api-key')
         >>> pages = client.pages
-        >>> 
+        >>>
         >>> # List all pages
         >>> all_pages = pages.list()
-        >>> 
+        >>>
         >>> # Get a specific page
         >>> page = pages.get(123)
-        >>> 
+        >>>
         >>> # Create a new page
         >>> new_page_data = PageCreate(
         ...     title="Getting Started",
@@ -30,15 +30,15 @@ class PagesEndpoint(BaseEndpoint):
         ...     content="# Welcome\\n\\nThis is your first page!"
         ... )
         >>> created_page = pages.create(new_page_data)
-        >>> 
+        >>>
         >>> # Update an existing page
         >>> update_data = PageUpdate(title="Updated Title")
         >>> updated_page = pages.update(123, update_data)
-        >>> 
+        >>>
         >>> # Delete a page
         >>> pages.delete(123)
     """
-    
+
     def list(
         self,
         limit: Optional[int] = None,
@@ -48,10 +48,10 @@ class PagesEndpoint(BaseEndpoint):
         locale: Optional[str] = None,
         author_id: Optional[int] = None,
         order_by: str = "title",
-        order_direction: str = "ASC"
+        order_direction: str = "ASC",
     ) -> List[Page]:
         """List pages with optional filtering.
-        
+
         Args:
             limit: Maximum number of pages to return
             offset: Number of pages to skip
@@ -61,10 +61,10 @@ class PagesEndpoint(BaseEndpoint):
             author_id: Author ID to filter by
             order_by: Field to order by (title, created_at, updated_at)
             order_direction: Order direction (ASC or DESC)
-            
+
         Returns:
             List of Page objects
-            
+
         Raises:
             APIError: If the API request fails
             ValidationError: If parameters are invalid
@@ -72,16 +72,18 @@ class PagesEndpoint(BaseEndpoint):
         # Validate parameters
         if limit is not None and limit < 1:
             raise ValidationError("limit must be greater than 0")
-        
+
         if offset is not None and offset < 0:
             raise ValidationError("offset must be non-negative")
-        
+
         if order_by not in ["title", "created_at", "updated_at", "path"]:
-            raise ValidationError("order_by must be one of: title, created_at, updated_at, path")
-        
+            raise ValidationError(
+                "order_by must be one of: title, created_at, updated_at, path"
+            )
+
         if order_direction not in ["ASC", "DESC"]:
             raise ValidationError("order_direction must be ASC or DESC")
-        
+
         # Build GraphQL query using actual Wiki.js schema
         query = """
         query {
@@ -97,18 +99,16 @@ class PagesEndpoint(BaseEndpoint):
             }
         }
         """
-        
+
         # Make request (no variables needed for simple list query)
-        response = self._post("/graphql", json_data={
-            "query": query
-        })
-        
+        response = self._post("/graphql", json_data={"query": query})
+
         # Parse response
         if "errors" in response:
             raise APIError(f"GraphQL errors: {response['errors']}")
-        
+
         pages_data = response.get("data", {}).get("pages", {}).get("list", [])
-        
+
         # Convert to Page objects
         pages = []
         for page_data in pages_data:
@@ -119,25 +119,25 @@ class PagesEndpoint(BaseEndpoint):
                 pages.append(page)
             except Exception as e:
                 raise APIError(f"Failed to parse page data: {str(e)}") from e
-        
+
         return pages
-    
+
     def get(self, page_id: int) -> Page:
         """Get a specific page by ID.
-        
+
         Args:
             page_id: The page ID
-            
+
         Returns:
             Page object
-            
+
         Raises:
             APIError: If the page is not found or request fails
             ValidationError: If page_id is invalid
         """
         if not isinstance(page_id, int) or page_id < 1:
             raise ValidationError("page_id must be a positive integer")
-        
+
         # Build GraphQL query using actual Wiki.js schema
         query = """
         query($id: Int!) {
@@ -164,48 +164,48 @@ class PagesEndpoint(BaseEndpoint):
             }
         }
         """
-        
+
         # Make request
-        response = self._post("/graphql", json_data={
-            "query": query,
-            "variables": {"id": page_id}
-        })
-        
+        response = self._post(
+            "/graphql",
+            json_data={"query": query, "variables": {"id": page_id}},
+        )
+
         # Parse response
         if "errors" in response:
             raise APIError(f"GraphQL errors: {response['errors']}")
-        
+
         page_data = response.get("data", {}).get("pages", {}).get("single")
         if not page_data:
             raise APIError(f"Page with ID {page_id} not found")
-        
+
         # Convert to Page object
         try:
             normalized_data = self._normalize_page_data(page_data)
             return Page(**normalized_data)
         except Exception as e:
             raise APIError(f"Failed to parse page data: {str(e)}") from e
-    
+
     def get_by_path(self, path: str, locale: str = "en") -> Page:
         """Get a page by its path.
-        
+
         Args:
             path: The page path (e.g., "getting-started")
             locale: The page locale (default: "en")
-            
+
         Returns:
             Page object
-            
+
         Raises:
             APIError: If the page is not found or request fails
             ValidationError: If path is invalid
         """
         if not path or not isinstance(path, str):
             raise ValidationError("path must be a non-empty string")
-        
+
         # Normalize path
         path = path.strip("/")
-        
+
         # Build GraphQL query
         query = """
         query($path: String!, $locale: String!) {
@@ -228,37 +228,40 @@ class PagesEndpoint(BaseEndpoint):
             }
         }
         """
-        
+
         # Make request
-        response = self._post("/graphql", json_data={
-            "query": query,
-            "variables": {"path": path, "locale": locale}
-        })
-        
+        response = self._post(
+            "/graphql",
+            json_data={
+                "query": query,
+                "variables": {"path": path, "locale": locale},
+            },
+        )
+
         # Parse response
         if "errors" in response:
             raise APIError(f"GraphQL errors: {response['errors']}")
-        
+
         page_data = response.get("data", {}).get("pageByPath")
         if not page_data:
             raise APIError(f"Page with path '{path}' not found")
-        
+
         # Convert to Page object
         try:
             normalized_data = self._normalize_page_data(page_data)
             return Page(**normalized_data)
         except Exception as e:
             raise APIError(f"Failed to parse page data: {str(e)}") from e
-    
+
     def create(self, page_data: Union[PageCreate, Dict[str, Any]]) -> Page:
         """Create a new page.
-        
+
         Args:
             page_data: Page creation data (PageCreate object or dict)
-            
+
         Returns:
             Created Page object
-            
+
         Raises:
             APIError: If page creation fails
             ValidationError: If page data is invalid
@@ -271,7 +274,7 @@ class PagesEndpoint(BaseEndpoint):
                 raise ValidationError(f"Invalid page data: {str(e)}") from e
         elif not isinstance(page_data, PageCreate):
             raise ValidationError("page_data must be PageCreate object or dict")
-        
+
         # Build GraphQL mutation using actual Wiki.js schema
         mutation = """
         mutation($content: String!, $description: String!, $editor: String!, $isPublished: Boolean!, $isPrivate: Boolean!, $locale: String!, $path: String!, $tags: [String]!, $title: String!) {
@@ -306,69 +309,67 @@ class PagesEndpoint(BaseEndpoint):
             }
         }
         """
-        
+
         # Build variables from page data
         variables = {
             "title": page_data.title,
             "path": page_data.path,
             "content": page_data.content,
-            "description": page_data.description or f"Created via SDK: {page_data.title}",
+            "description": page_data.description
+            or f"Created via SDK: {page_data.title}",
             "isPublished": page_data.is_published,
             "isPrivate": page_data.is_private,
             "tags": page_data.tags,
             "locale": page_data.locale,
-            "editor": page_data.editor
+            "editor": page_data.editor,
         }
-        
+
         # Make request
-        response = self._post("/graphql", json_data={
-            "query": mutation,
-            "variables": variables
-        })
-        
+        response = self._post(
+            "/graphql", json_data={"query": mutation, "variables": variables}
+        )
+
         # Parse response
         if "errors" in response:
             raise APIError(f"Failed to create page: {response['errors']}")
-        
+
         create_result = response.get("data", {}).get("pages", {}).get("create", {})
         response_result = create_result.get("responseResult", {})
-        
+
         if not response_result.get("succeeded"):
             error_msg = response_result.get("message", "Unknown error")
             raise APIError(f"Page creation failed: {error_msg}")
-        
+
         created_page_data = create_result.get("page")
         if not created_page_data:
             raise APIError("Page creation failed - no page data returned")
-        
+
         # Convert to Page object
         try:
             normalized_data = self._normalize_page_data(created_page_data)
             return Page(**normalized_data)
         except Exception as e:
             raise APIError(f"Failed to parse created page data: {str(e)}") from e
-    
+
     def update(
-        self,
-        page_id: int,
-        page_data: Union[PageUpdate, Dict[str, Any]]
+        self, page_id: int, page_data: Union[PageUpdate, Dict[str, Any]]
     ) -> Page:
         """Update an existing page.
-        
+
         Args:
             page_id: The page ID
             page_data: Page update data (PageUpdate object or dict)
-            
+
         Returns:
             Updated Page object
-            
+
         Raises:
             APIError: If page update fails
             ValidationError: If parameters are invalid
         """
         if not isinstance(page_id, int) or page_id < 1:
             raise ValidationError("page_id must be a positive integer")
-        
+
         # Convert to PageUpdate if needed
         if isinstance(page_data, dict):
             try:
@@ -377,7 +378,7 @@ class PagesEndpoint(BaseEndpoint):
                 raise ValidationError(f"Invalid page data: {str(e)}") from e
         elif not isinstance(page_data, PageUpdate):
             raise ValidationError("page_data must be PageUpdate object or dict")
-        
+
         # Build GraphQL mutation
         mutation = """
         mutation($id: Int!, $title: String, $content: String, $description: String, $isPublished: Boolean, $isPrivate: Boolean, $tags: [String]) {
@@ -408,10 +409,10 @@ class PagesEndpoint(BaseEndpoint):
             }
         }
         """
-        
+
         # Build variables (only include non-None values)
         variables = {"id": page_id}
-        
+
         if page_data.title is not None:
             variables["title"] = page_data.title
         if page_data.content is not None:
@@ -424,44 +425,43 @@ class PagesEndpoint(BaseEndpoint):
             variables["isPrivate"] = page_data.is_private
         if page_data.tags is not None:
             variables["tags"] = page_data.tags
-        
+
         # Make request
-        response = self._post("/graphql", json_data={
-            "query": mutation,
-            "variables": variables
-        })
-        
+        response = self._post(
+            "/graphql", json_data={"query": mutation, "variables": variables}
+        )
+
         # Parse response
         if "errors" in response:
             raise APIError(f"Failed to update page: {response['errors']}")
-        
+
         updated_page_data = response.get("data", {}).get("updatePage")
         if not updated_page_data:
             raise APIError("Page update failed - no data returned")
-        
+
         # Convert to Page object
         try:
             normalized_data = self._normalize_page_data(updated_page_data)
             return Page(**normalized_data)
         except Exception as e:
             raise APIError(f"Failed to parse updated page data: {str(e)}") from e
-    
+
     def delete(self, page_id: int) -> bool:
         """Delete a page.
-        
+
         Args:
             page_id: The page ID
-            
+
         Returns:
             True if deletion was successful
-            
+
         Raises:
             APIError: If page deletion fails
             ValidationError: If page_id is invalid
         """
         if not isinstance(page_id, int) or page_id < 1:
             raise ValidationError("page_id must be a positive integer")
-        
+
         # Build GraphQL mutation
         mutation = """
         mutation($id: Int!) {
@@ -471,118 +471,116 @@ class PagesEndpoint(BaseEndpoint):
             }
         }
         """
-        
+
         # Make request
-        response = self._post("/graphql", json_data={
-            "query": mutation,
-            "variables": {"id": page_id}
-        })
-        
+        response = self._post(
+            "/graphql",
+            json_data={"query": mutation, "variables": {"id": page_id}},
+        )
+
         # Parse response
         if "errors" in response:
             raise APIError(f"Failed to delete page: {response['errors']}")
-        
+
         delete_result = response.get("data", {}).get("deletePage", {})
         success = delete_result.get("success", False)
-        
+
         if not success:
             message = delete_result.get("message", "Unknown error")
             raise APIError(f"Page deletion failed: {message}")
-        
+
         return True
-    
+
     def search(
         self,
         query: str,
         limit: Optional[int] = None,
-        locale: Optional[str] = None
+        locale: Optional[str] = None,
     ) -> List[Page]:
         """Search for pages by content and title.
-        
+
         Args:
             query: Search query string
             limit: Maximum number of results to return
             locale: Locale to search in
-            
+
         Returns:
             List of matching Page objects
-            
+
         Raises:
             APIError: If search fails
             ValidationError: If parameters are invalid
         """
         if not query or not isinstance(query, str):
             raise ValidationError("query must be a non-empty string")
-        
+
         if limit is not None and limit < 1:
             raise ValidationError("limit must be greater than 0")
-        
+
         # Use the list method with search parameter
-        return self.list(
-            search=query,
-            limit=limit,
-            locale=locale
-        )
-    
+        return self.list(search=query, limit=limit, locale=locale)
+
     def get_by_tags(
         self,
         tags: List[str],
         match_all: bool = True,
-        limit: Optional[int] = None
+        limit: Optional[int] = None,
     ) -> List[Page]:
         """Get pages by tags.
-        
+
         Args:
             tags: List of tags to search for
             match_all: If True, pages must have ALL tags. If False, ANY tag matches
             limit: Maximum number of results to return
-            
+
         Returns:
             List of matching Page objects
-            
+
         Raises:
             APIError: If request fails
             ValidationError: If parameters are invalid
         """
         if not tags or not isinstance(tags, list):
             raise ValidationError("tags must be a non-empty list")
-        
+
         if limit is not None and limit < 1:
             raise ValidationError("limit must be greater than 0")
-        
+
         # For match_all=True, use the tags parameter directly
         if match_all:
             return self.list(tags=tags, limit=limit)
-        
+
         # For match_all=False, we need a more complex query
         # This would require a custom GraphQL query or multiple requests
         # For now, implement a simple approach
-        all_pages = self.list(limit=limit * 2 if limit else None)  # Get more pages to filter
-        
+        all_pages = self.list(
+            limit=limit * 2 if limit else None
+        )  # Get more pages to filter
+
         matching_pages = []
         for page in all_pages:
             if any(tag.lower() in [t.lower() for t in page.tags] for tag in tags):
                 matching_pages.append(page)
                 if limit and len(matching_pages) >= limit:
                     break
-        
+
         return matching_pages
-    
+
     def _normalize_page_data(self, page_data: Dict[str, Any]) -> Dict[str, Any]:
         """Normalize page data from API response to model format.
-        
+
         Args:
             page_data: Raw page data from API
-            
+
         Returns:
             Normalized data for Page model
         """
         normalized = {}
-        
+
         # Map API field names to model field names
         field_mapping = {
             "id": "id",
-            "title": "title", 
+            "title": "title",
             "path": "path",
             "content": "content",
             "description": "description",
@@ -590,17 +588,17 @@ class PagesEndpoint(BaseEndpoint):
             "isPrivate": "is_private",
             "locale": "locale",
             "authorId": "author_id",
-            "authorName": "author_name", 
+            "authorName": "author_name",
             "authorEmail": "author_email",
             "editor": "editor",
             "createdAt": "created_at",
-            "updatedAt": "updated_at"
+            "updatedAt": "updated_at",
         }
-        
+
         for api_field, model_field in field_mapping.items():
             if api_field in page_data:
                 normalized[model_field] = page_data[api_field]
-        
+
         # Handle tags - convert from Wiki.js format
         if "tags" in page_data:
             if isinstance(page_data["tags"], list):
@@ -616,5 +614,5 @@ class PagesEndpoint(BaseEndpoint):
                 normalized["tags"] = []
         else:
             normalized["tags"] = []
-        
-        return normalized
\ No newline at end of file
+
+        return normalized
diff --git a/wikijs/exceptions.py b/wikijs/exceptions.py
index 418e170..c1916f1 100644
--- a/wikijs/exceptions.py
+++ b/wikijs/exceptions.py
@@ -5,7 +5,7 @@ from typing import Any, Dict, Optional
 
 class WikiJSException(Exception):
     """Base exception for all SDK errors."""
-    
+
     def __init__(self, message: str, details: Optional[Dict[str, Any]] = None):
         super().__init__(message)
         self.message = message
@@ -14,17 +14,15 @@ class WikiJSException(Exception):
 
 class ConfigurationError(WikiJSException):
     """Raised when there's an issue with SDK configuration."""
-    pass
 
 
 class AuthenticationError(WikiJSException):
     """Raised when authentication fails."""
-    pass
 
 
 class ValidationError(WikiJSException):
     """Raised when input validation fails."""
-    
+
     def __init__(self, message: str, field: Optional[str] = None, value: Any = None):
         super().__init__(message)
         self.field = field
@@ -33,13 +31,13 @@ class ValidationError(WikiJSException):
 
 class APIError(WikiJSException):
     """Base class for API-related errors."""
-    
+
     def __init__(
-        self, 
-        message: str, 
-        status_code: Optional[int] = None, 
+        self,
+        message: str,
+        status_code: Optional[int] = None,
         response: Optional[Any] = None,
-        details: Optional[Dict[str, Any]] = None
+        details: Optional[Dict[str, Any]] = None,
     ):
         super().__init__(message, details)
         self.status_code = status_code
@@ -48,52 +46,46 @@ class APIError(WikiJSException):
 
 class ClientError(APIError):
     """Raised for 4xx HTTP status codes (client errors)."""
-    pass
 
 
 class ServerError(APIError):
     """Raised for 5xx HTTP status codes (server errors)."""
-    pass
 
 
 class NotFoundError(ClientError):
     """Raised when a requested resource is not found (404)."""
-    pass
 
 
 class PermissionError(ClientError):
     """Raised when access is forbidden (403)."""
-    pass
 
 
 class RateLimitError(ClientError):
     """Raised when rate limit is exceeded (429)."""
-    
+
     def __init__(self, message: str, retry_after: Optional[int] = None, **kwargs):
         # Remove status_code from kwargs if present to avoid duplicate argument
-        kwargs.pop('status_code', None)
+        kwargs.pop("status_code", None)
         super().__init__(message, status_code=429, **kwargs)
         self.retry_after = retry_after
 
 
 class ConnectionError(WikiJSException):
     """Raised when there's a connection issue."""
-    pass
 
 
 class TimeoutError(WikiJSException):
     """Raised when a request times out."""
-    pass
 
 
 def create_api_error(status_code: int, message: str, response: Any = None) -> APIError:
     """Create appropriate API error based on status code.
-    
+
     Args:
         status_code: HTTP status code
         message: Error message
         response: Raw response object
-    
+
     Returns:
         Appropriate APIError subclass instance
     """
@@ -108,4 +100,4 @@ def create_api_error(status_code: int, message: str, response: Any = None) -> AP
     elif 500 <= status_code < 600:
         return ServerError(message, status_code=status_code, response=response)
     else:
-        return APIError(message, status_code=status_code, response=response)
\ No newline at end of file
+        return APIError(message, status_code=status_code, response=response)
diff --git a/wikijs/models/__init__.py b/wikijs/models/__init__.py
index 51ccbee..3d9ec83 100644
--- a/wikijs/models/__init__.py
+++ b/wikijs/models/__init__.py
@@ -6,6 +6,6 @@ from .page import Page, PageCreate, PageUpdate
 __all__ = [
     "BaseModel",
     "Page",
-    "PageCreate", 
+    "PageCreate",
     "PageUpdate",
-]
\ No newline at end of file
+]
diff --git a/wikijs/models/base.py b/wikijs/models/base.py
index 7e4551c..70b58cf 100644
--- a/wikijs/models/base.py
+++ b/wikijs/models/base.py
@@ -3,19 +3,20 @@
 from datetime import datetime
 from typing import Any, Dict, Optional
 
-from pydantic import BaseModel as PydanticBaseModel, ConfigDict
+from pydantic import BaseModel as PydanticBaseModel
+from pydantic import ConfigDict
 
 
 class BaseModel(PydanticBaseModel):
     """Base model with common functionality for all data models.
-    
+
     Provides:
     - Automatic validation via Pydantic
     - JSON serialization/deserialization
     - Field aliases for API compatibility
     - Consistent datetime handling
     """
-    
+
     model_config = ConfigDict(
         # Allow population by field name or alias
         populate_by_name=True,
@@ -26,52 +27,50 @@ class BaseModel(PydanticBaseModel):
         # Allow extra fields for forward compatibility
         extra="ignore",
         # Serialize datetime as ISO format
-        json_encoders={
-            datetime: lambda v: v.isoformat() if v else None
-        }
+        json_encoders={datetime: lambda v: v.isoformat() if v else None},
     )
-    
+
     def to_dict(self, exclude_none: bool = True) -> Dict[str, Any]:
         """Convert model to dictionary.
-        
+
         Args:
             exclude_none: Whether to exclude None values
-            
+
         Returns:
             Dictionary representation of the model
         """
         return self.model_dump(exclude_none=exclude_none, by_alias=True)
-    
+
     def to_json(self, exclude_none: bool = True) -> str:
         """Convert model to JSON string.
-        
+
         Args:
             exclude_none: Whether to exclude None values
-            
+
         Returns:
             JSON string representation of the model
         """
         return self.model_dump_json(exclude_none=exclude_none, by_alias=True)
-    
+
     @classmethod
     def from_dict(cls, data: Dict[str, Any]) -> "BaseModel":
         """Create model instance from dictionary.
-        
+
         Args:
             data: Dictionary data
-            
+
         Returns:
             Model instance
         """
         return cls(**data)
-    
+
     @classmethod
     def from_json(cls, json_str: str) -> "BaseModel":
         """Create model instance from JSON string.
-        
+
         Args:
             json_str: JSON string
-            
+
         Returns:
             Model instance
         """
@@ -80,11 +79,11 @@ class BaseModel(PydanticBaseModel):
 
 class TimestampedModel(BaseModel):
     """Base model with timestamp fields."""
-    
+
     created_at: Optional[datetime] = None
     updated_at: Optional[datetime] = None
-    
+
     @property
     def is_new(self) -> bool:
         """Check if this is a new (unsaved) model."""
-        return self.created_at is None
\ No newline at end of file
+        return self.created_at is None
diff --git a/wikijs/models/page.py b/wikijs/models/page.py
index 023cf91..8454294 100644
--- a/wikijs/models/page.py
+++ b/wikijs/models/page.py
@@ -1,7 +1,6 @@
 """Page-related data models for wikijs-python-sdk."""
 
 import re
-from datetime import datetime
 from typing import List, Optional
 
 from pydantic import Field, validator
@@ -11,89 +10,89 @@ from .base import BaseModel, TimestampedModel
 
 class Page(TimestampedModel):
     """Represents a Wiki.js page.
-    
+
     This model contains all the data for a wiki page including
     content, metadata, and computed properties.
     """
-    
+
     id: int = Field(..., description="Unique page identifier")
     title: str = Field(..., description="Page title")
     path: str = Field(..., description="Page path/slug")
     content: Optional[str] = Field(None, description="Page content")
-    
+
     # Optional fields that may be present
     description: Optional[str] = Field(None, description="Page description")
     is_published: bool = Field(True, description="Whether page is published")
     is_private: bool = Field(False, description="Whether page is private")
-    
+
     # Metadata
     tags: List[str] = Field(default_factory=list, description="Page tags")
     locale: str = Field("en", description="Page locale")
-    
+
     # Author information
     author_id: Optional[int] = Field(None, alias="authorId")
     author_name: Optional[str] = Field(None, alias="authorName")
     author_email: Optional[str] = Field(None, alias="authorEmail")
-    
-    # Editor information  
+
+    # Editor information
     editor: Optional[str] = Field(None, description="Editor used")
-    
+
     @validator("path")
     def validate_path(cls, v):
         """Validate page path format."""
         if not v:
             raise ValueError("Path cannot be empty")
-        
+
         # Remove leading/trailing slashes and normalize
         v = v.strip("/")
-        
+
         # Check for valid characters (letters, numbers, hyphens, underscores, slashes)
         if not re.match(r"^[a-zA-Z0-9\-_/]+$", v):
             raise ValueError("Path contains invalid characters")
-        
+
         return v
-    
+
     @validator("title")
     def validate_title(cls, v):
         """Validate page title."""
         if not v or not v.strip():
             raise ValueError("Title cannot be empty")
-        
+
         # Limit title length
         if len(v) > 255:
             raise ValueError("Title cannot exceed 255 characters")
-        
+
         return v.strip()
-    
+
     @property
     def word_count(self) -> int:
         """Calculate word count from content."""
         if not self.content:
             return 0
-        
+
         # Simple word count - split on whitespace
         words = self.content.split()
         return len(words)
-    
+
     @property
     def reading_time(self) -> int:
         """Estimate reading time in minutes (assuming 200 words per minute)."""
         return max(1, self.word_count // 200)
-    
+
     @property
     def url_path(self) -> str:
         """Get the full URL path for this page."""
         return f"/{self.path}"
-    
+
     def extract_headings(self) -> List[str]:
         """Extract markdown headings from content.
-        
+
         Returns:
             List of heading text (without # markers)
         """
         if not self.content:
             return []
-        
+
         headings = []
         for line in self.content.split("\n"):
             line = line.strip()
@@ -102,15 +101,15 @@ class Page(TimestampedModel):
                 heading = re.sub(r"^#+\s*", "", line).strip()
                 if heading:
                     headings.append(heading)
-        
+
         return headings
-    
+
     def has_tag(self, tag: str) -> bool:
         """Check if page has a specific tag.
-        
+
         Args:
             tag: Tag to check for
-            
+
         Returns:
             True if page has the tag
         """
@@ -119,70 +118,70 @@ class Page(TimestampedModel):
 
 class PageCreate(BaseModel):
     """Data model for creating a new page."""
-    
+
     title: str = Field(..., description="Page title")
     path: str = Field(..., description="Page path/slug")
     content: str = Field(..., description="Page content")
-    
+
     # Optional fields
     description: Optional[str] = Field(None, description="Page description")
     is_published: bool = Field(True, description="Whether to publish immediately")
     is_private: bool = Field(False, description="Whether page should be private")
-    
+
     tags: List[str] = Field(default_factory=list, description="Page tags")
     locale: str = Field("en", description="Page locale")
     editor: str = Field("markdown", description="Editor to use")
-    
+
     @validator("path")
     def validate_path(cls, v):
         """Validate page path format."""
         if not v:
             raise ValueError("Path cannot be empty")
-        
+
         # Remove leading/trailing slashes and normalize
         v = v.strip("/")
-        
+
         # Check for valid characters
         if not re.match(r"^[a-zA-Z0-9\-_/]+$", v):
             raise ValueError("Path contains invalid characters")
-        
+
         return v
-    
+
     @validator("title")
     def validate_title(cls, v):
         """Validate page title."""
         if not v or not v.strip():
             raise ValueError("Title cannot be empty")
-        
+
         if len(v) > 255:
             raise ValueError("Title cannot exceed 255 characters")
-        
+
         return v.strip()
 
 
 class PageUpdate(BaseModel):
     """Data model for updating an existing page."""
-    
+
     # All fields optional for partial updates
     title: Optional[str] = Field(None, description="Page title")
     content: Optional[str] = Field(None, description="Page content")
     description: Optional[str] = Field(None, description="Page description")
-    
+
     is_published: Optional[bool] = Field(None, description="Publication status")
     is_private: Optional[bool] = Field(None, description="Privacy status")
-    
+
     tags: Optional[List[str]] = Field(None, description="Page tags")
-    
+
     @validator("title")
     def validate_title(cls, v):
         """Validate page title if provided."""
         if v is not None:
             if not v.strip():
                 raise ValueError("Title cannot be empty")
-            
+
             if len(v) > 255:
                 raise ValueError("Title cannot exceed 255 characters")
-            
+
             return v.strip()
-        
-        return v
\ No newline at end of file
+
+        return v
diff --git a/wikijs/utils/__init__.py b/wikijs/utils/__init__.py
index bcc67bd..621665b 100644
--- a/wikijs/utils/__init__.py
+++ b/wikijs/utils/__init__.py
@@ -1,23 +1,23 @@
 """Utility functions for wikijs-python-sdk."""
 
 from .helpers import (
+    build_api_url,
+    chunk_list,
+    extract_error_message,
     normalize_url,
+    parse_wiki_response,
+    safe_get,
     sanitize_path,
     validate_url,
-    build_api_url,
-    parse_wiki_response,
-    extract_error_message,
-    chunk_list,
-    safe_get,
 )
 
 __all__ = [
     "normalize_url",
-    "sanitize_path", 
+    "sanitize_path",
     "validate_url",
     "build_api_url",
     "parse_wiki_response",
     "extract_error_message",
     "chunk_list",
     "safe_get",
-]
\ No newline at end of file
+]
diff --git a/wikijs/utils/helpers.py b/wikijs/utils/helpers.py
index ed0a242..7dea768 100644
--- a/wikijs/utils/helpers.py
+++ b/wikijs/utils/helpers.py
@@ -1,7 +1,7 @@
 """Helper utilities for wikijs-python-sdk."""
 
 import re
-from typing import Any, Dict, Optional
+from typing import Any, Dict
 from urllib.parse import urljoin, urlparse
 
 from ..exceptions import APIError, ValidationError
@@ -9,37 +9,37 @@ from ..exceptions import APIError, ValidationError
 
 def normalize_url(base_url: str) -> str:
     """Normalize a base URL for API usage.
-    
+
     Args:
         base_url: Base URL to normalize
-        
+
     Returns:
         Normalized URL without trailing slash
-        
+
     Raises:
         ValidationError: If URL is invalid
     """
     if not base_url:
         raise ValidationError("Base URL cannot be empty")
-    
+
     # Add https:// if no scheme provided
     if not base_url.startswith(("http://", "https://")):
         base_url = f"https://{base_url}"
-    
+
     # Validate URL format
     if not validate_url(base_url):
         raise ValidationError(f"Invalid URL format: {base_url}")
-    
+
     # Remove trailing slash
     return base_url.rstrip("/")
 
 
 def validate_url(url: str) -> bool:
     """Validate URL format.
-    
+
     Args:
         url: URL to validate
-        
+
     Returns:
         True if URL is valid
     """
@@ -52,72 +52,72 @@ def validate_url(url: str) -> bool:
 
 def sanitize_path(path: str) -> str:
     """Sanitize a wiki page path.
-    
+
     Args:
         path: Path to sanitize
-        
+
     Returns:
         Sanitized path
-        
+
     Raises:
         ValidationError: If path is invalid
     """
     if not path:
         raise ValidationError("Path cannot be empty")
-    
+
     # Remove leading/trailing slashes and whitespace
     path = path.strip().strip("/")
-    
+
     # Replace spaces with hyphens
     path = re.sub(r"\s+", "-", path)
-    
+
     # Remove invalid characters, keep only alphanumeric, hyphens, underscores, slashes
     path = re.sub(r"[^a-zA-Z0-9\-_/]", "", path)
-    
+
     # Remove multiple consecutive hyphens or slashes
     path = re.sub(r"[-/]+", lambda m: m.group(0)[0], path)
-    
+
     if not path:
         raise ValidationError("Path contains no valid characters")
-    
+
     return path
 
 
 def build_api_url(base_url: str, endpoint: str) -> str:
     """Build full API URL from base URL and endpoint.
-    
+
     Args:
         base_url: Base URL (already normalized)
         endpoint: API endpoint path
-        
+
     Returns:
         Full API URL
     """
     # Ensure endpoint starts with /
     if not endpoint.startswith("/"):
         endpoint = f"/{endpoint}"
-    
+
     # Wiki.js API is typically at /graphql, but we'll use REST-style for now
     api_base = f"{base_url}/api"
-    
+
     return urljoin(api_base, endpoint.lstrip("/"))
 
 
 def parse_wiki_response(response_data: Dict[str, Any]) -> Dict[str, Any]:
     """Parse Wiki.js API response data.
-    
+
     Args:
         response_data: Raw response data from API
-        
+
     Returns:
         Parsed response data
-        
+
     Raises:
         APIError: If response indicates an error
     """
     if not isinstance(response_data, dict):
         return response_data
-    
+
     # Check for error indicators
     if "error" in response_data:
         error_info = response_data["error"]
@@ -127,26 +127,30 @@ def parse_wiki_response(response_data: Dict[str, Any]) -> Dict[str, Any]:
         else:
             message = str(error_info)
             code = None
-        
+
         raise APIError(f"API Error: {message}", details={"code": code})
-    
+
     # Handle GraphQL-style errors
     if "errors" in response_data:
         errors = response_data["errors"]
         if errors:
             first_error = errors[0] if isinstance(errors, list) else errors
-            message = first_error.get("message", "GraphQL error") if isinstance(first_error, dict) else str(first_error)
+            message = (
+                first_error.get("message", "GraphQL error")
+                if isinstance(first_error, dict)
+                else str(first_error)
+            )
             raise APIError(f"GraphQL Error: {message}", details={"errors": errors})
-    
+
     return response_data
 
 
 def extract_error_message(response: Any) -> str:
     """Extract error message from response.
-    
-    Args:  
+
+    Args:
         response: Response object or data
-        
+
     Returns:
         Error message string
     """
@@ -160,50 +164,52 @@ def extract_error_message(response: Any) -> str:
                         return str(data[field])
         except Exception:
             pass
-    
+
     if hasattr(response, "text"):
-        return response.text[:200] + "..." if len(response.text) > 200 else response.text
-    
+        return (
+            response.text[:200] + "..." if len(response.text) > 200 else response.text
+        )
+
     return str(response)
 
 
 def chunk_list(items: list, chunk_size: int) -> list:
     """Split list into chunks of specified size.
-    
+
     Args:
         items: List to chunk
         chunk_size: Size of each chunk
-        
+
     Returns:
         List of chunks
     """
     if chunk_size <= 0:
         raise ValueError("Chunk size must be positive")
-    
-    return [items[i:i + chunk_size] for i in range(0, len(items), chunk_size)]
+
+    return [items[i : i + chunk_size] for i in range(0, len(items), chunk_size)]
 
 
 def safe_get(data: Dict[str, Any], key: str, default: Any = None) -> Any:
     """Safely get value from dictionary with dot notation support.
-    
+
     Args:
         data: Dictionary to get value from
         key: Key (supports dot notation like "user.name")
         default: Default value if key not found
-        
+
     Returns:
         Value or default
     """
     if "." not in key:
         return data.get(key, default)
-    
+
     keys = key.split(".")
     current = data
-    
+
     for k in keys:
         if isinstance(current, dict) and k in current:
             current = current[k]
         else:
             return default
-    
-    return current
\ No newline at end of file
+
+    return current
diff --git a/wikijs/version.py b/wikijs/version.py
index 62e7e77..3234af5 100644
--- a/wikijs/version.py
+++ b/wikijs/version.py
@@ -4,4 +4,4 @@ __version__ = "0.1.0"
 __version_info__ = (0, 1, 0)
 
 # Version history
-# 0.1.0 - MVP Release: Basic Wiki.js integration with Pages API
\ No newline at end of file
+# 0.1.0 - MVP Release: Basic Wiki.js integration with Pages API