diff --git a/tests/auth/test_jwt.py b/tests/auth/test_jwt.py
index 9cb2fcf..5eb81ec 100644
--- a/tests/auth/test_jwt.py
+++ b/tests/auth/test_jwt.py
@@ -13,42 +13,44 @@ from wikijs.exceptions import AuthenticationError
 class TestJWTAuth:
     """Test JWTAuth implementation."""
 
-    def test_init_with_valid_token(self, mock_jwt_token):
+    def test_init_with_valid_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test initialization with valid JWT token."""
-        auth = JWTAuth(mock_jwt_token)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url)
         assert auth._token == mock_jwt_token
+        assert auth._base_url == mock_wiki_base_url
         assert auth._refresh_token is None
         assert auth._expires_at is None
 
-    def test_init_with_all_parameters(self, mock_jwt_token):
+    def test_init_with_all_parameters(self, mock_jwt_token, mock_wiki_base_url):
         """Test initialization with all parameters."""
         refresh_token = "refresh-token-123"
         expires_at = time.time() + 3600
 
-        auth = JWTAuth(mock_jwt_token, refresh_token, expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, refresh_token, expires_at)
         assert auth._token == mock_jwt_token
+        assert auth._base_url == mock_wiki_base_url
         assert auth._refresh_token == refresh_token
         assert auth._expires_at == expires_at
 
-    def test_init_with_whitespace_token(self):
+    def test_init_with_whitespace_token(self, mock_wiki_base_url):
         """Test initialization trims whitespace from token."""
-        auth = JWTAuth("  test-token  ")
+        auth = JWTAuth("  test-token  ", mock_wiki_base_url)
         assert auth._token == "test-token"
 
-    def test_init_with_empty_token_raises_error(self):
+    def test_init_with_empty_token_raises_error(self, mock_wiki_base_url):
         """Test that empty JWT token raises ValueError."""
         with pytest.raises(ValueError, match="JWT token cannot be empty"):
-            JWTAuth("")
+            JWTAuth("", mock_wiki_base_url)
 
-    def test_init_with_whitespace_only_token_raises_error(self):
+    def test_init_with_whitespace_only_token_raises_error(self, mock_wiki_base_url):
         """Test that whitespace-only JWT token raises ValueError."""
         with pytest.raises(ValueError, match="JWT token cannot be empty"):
-            JWTAuth("   ")
+            JWTAuth("   ", mock_wiki_base_url)
 
-    def test_init_with_none_raises_error(self):
+    def test_init_with_none_raises_error(self, mock_wiki_base_url):
         """Test that None JWT token raises ValueError."""
         with pytest.raises(ValueError, match="JWT token cannot be empty"):
-            JWTAuth(None)
+            JWTAuth(None, mock_wiki_base_url)
 
     def test_get_headers_returns_bearer_token(self, jwt_auth, mock_jwt_token):
         """Test that get_headers returns proper Authorization header."""
@@ -60,17 +62,17 @@ class TestJWTAuth:
         }
         assert headers == expected_headers
 
-    def test_get_headers_attempts_refresh_if_invalid(self, mock_jwt_token):
+    def test_get_headers_attempts_refresh_if_invalid(self, mock_jwt_token, mock_wiki_base_url):
         """Test that get_headers attempts refresh if token is invalid."""
         # 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)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, refresh_token, expires_at)
 
         # Mock the refresh method to avoid actual implementation
         with patch.object(auth, "refresh") as mock_refresh:
-            mock_refresh.side_effect = AuthenticationError("Refresh not implemented")
+            mock_refresh.side_effect = AuthenticationError("Refresh failed")
 
             with pytest.raises(AuthenticationError):
                 auth.get_headers()
@@ -81,28 +83,28 @@ class TestJWTAuth:
         """Test that is_valid returns True for valid token without expiry."""
         assert jwt_auth.is_valid() is True
 
-    def test_is_valid_returns_true_for_non_expired_token(self, mock_jwt_token):
+    def test_is_valid_returns_true_for_non_expired_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that is_valid returns True for non-expired token."""
         expires_at = time.time() + 3600  # Expires in 1 hour
-        auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
         assert auth.is_valid() is True
 
-    def test_is_valid_returns_false_for_expired_token(self, mock_jwt_token):
+    def test_is_valid_returns_false_for_expired_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that is_valid returns False for expired token."""
         expires_at = time.time() - 3600  # Expired 1 hour ago
-        auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
         assert auth.is_valid() is False
 
-    def test_is_valid_considers_refresh_buffer(self, mock_jwt_token):
+    def test_is_valid_considers_refresh_buffer(self, mock_jwt_token, mock_wiki_base_url):
         """Test that is_valid considers refresh buffer."""
         # Token expires in 4 minutes (less than 5 minute buffer)
         expires_at = time.time() + 240
-        auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
         assert auth.is_valid() is False  # Should be invalid due to buffer
 
-    def test_is_valid_returns_false_for_empty_token(self, mock_jwt_token):
+    def test_is_valid_returns_false_for_empty_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that is_valid handles edge cases."""
-        auth = JWTAuth(mock_jwt_token)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url)
         auth._token = ""
         assert auth.is_valid() is False
 
@@ -117,57 +119,60 @@ class TestJWTAuth:
         ):
             jwt_auth.refresh()
 
-    def test_refresh_raises_not_implemented_error(self, mock_jwt_token):
-        """Test that refresh raises not implemented error."""
+    def test_refresh_with_refresh_token(self, mock_jwt_token, mock_wiki_base_url):
+        """Test that refresh is now implemented with refresh token."""
         refresh_token = "refresh-token-123"
-        auth = JWTAuth(mock_jwt_token, refresh_token)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, refresh_token)
 
-        with pytest.raises(
-            AuthenticationError, match="JWT token refresh not yet implemented"
-        ):
-            auth.refresh()
+        # Mock the requests.post call
+        with patch("requests.post") as mock_post:
+            # Simulate failed refresh (network issue)
+            mock_post.side_effect = Exception("Network error")
+
+            with pytest.raises(AuthenticationError, match="Unexpected error during token refresh"):
+                auth.refresh()
 
     def test_is_expired_returns_false_no_expiry(self, jwt_auth):
         """Test that is_expired returns False when no expiry set."""
         assert jwt_auth.is_expired() is False
 
-    def test_is_expired_returns_false_for_valid_token(self, mock_jwt_token):
+    def test_is_expired_returns_false_for_valid_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that is_expired returns False for valid token."""
         expires_at = time.time() + 3600  # Expires in 1 hour
-        auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
         assert auth.is_expired() is False
 
-    def test_is_expired_returns_true_for_expired_token(self, mock_jwt_token):
+    def test_is_expired_returns_true_for_expired_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that is_expired returns True for expired token."""
         expires_at = time.time() - 3600  # Expired 1 hour ago
-        auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
         assert auth.is_expired() is True
 
     def test_time_until_expiry_returns_none_no_expiry(self, jwt_auth):
         """Test that time_until_expiry returns None when no expiry set."""
         assert jwt_auth.time_until_expiry() is None
 
-    def test_time_until_expiry_returns_correct_delta(self, mock_jwt_token):
+    def test_time_until_expiry_returns_correct_delta(self, mock_jwt_token, mock_wiki_base_url):
         """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)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, 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)
         assert 3550 <= time_left.total_seconds() <= 3600
 
-    def test_time_until_expiry_returns_zero_for_expired(self, mock_jwt_token):
+    def test_time_until_expiry_returns_zero_for_expired(self, mock_jwt_token, mock_wiki_base_url):
         """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)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
 
         time_left = auth.time_until_expiry()
         assert time_left.total_seconds() == 0
 
-    def test_token_preview_masks_token(self, mock_jwt_token):
+    def test_token_preview_masks_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that token_preview masks the token for security."""
-        auth = JWTAuth(mock_jwt_token)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url)
         preview = auth.token_preview
 
         assert preview != mock_jwt_token  # Should not show full token
@@ -175,25 +180,25 @@ class TestJWTAuth:
         assert preview.endswith(mock_jwt_token[-10:])
         assert "..." in preview
 
-    def test_token_preview_handles_short_token(self):
+    def test_token_preview_handles_short_token(self, mock_wiki_base_url):
         """Test that token_preview handles short tokens."""
         short_token = "short"
-        auth = JWTAuth(short_token)
+        auth = JWTAuth(short_token, mock_wiki_base_url)
         preview = auth.token_preview
 
         assert preview == "*****"  # Should be all asterisks
 
-    def test_token_preview_handles_none_token(self, mock_jwt_token):
+    def test_token_preview_handles_none_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that token_preview handles None token."""
-        auth = JWTAuth(mock_jwt_token)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url)
         auth._token = None
 
         assert auth.token_preview == "None"
 
-    def test_repr_shows_masked_token(self, mock_jwt_token):
+    def test_repr_shows_masked_token(self, mock_jwt_token, mock_wiki_base_url):
         """Test that __repr__ shows masked token."""
         expires_at = time.time() + 3600
-        auth = JWTAuth(mock_jwt_token, expires_at=expires_at)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, expires_at=expires_at)
         repr_str = repr(auth)
 
         assert "JWTAuth" in repr_str
@@ -207,12 +212,12 @@ class TestJWTAuth:
         jwt_auth.validate_credentials()
         assert jwt_auth.is_valid() is True
 
-    def test_refresh_token_whitespace_handling(self, mock_jwt_token):
+    def test_refresh_token_whitespace_handling(self, mock_jwt_token, mock_wiki_base_url):
         """Test that refresh token whitespace is handled correctly."""
         refresh_token = "  refresh-token-123  "
-        auth = JWTAuth(mock_jwt_token, refresh_token)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, refresh_token)
         assert auth._refresh_token == "refresh-token-123"
 
         # Test None refresh token
-        auth = JWTAuth(mock_jwt_token, None)
+        auth = JWTAuth(mock_jwt_token, mock_wiki_base_url, None)
         assert auth._refresh_token is None
diff --git a/tests/conftest.py b/tests/conftest.py
index 310d551..439cdd2 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -25,9 +25,9 @@ def api_key_auth(mock_api_key):
 
 
 @pytest.fixture
-def jwt_auth(mock_jwt_token):
+def jwt_auth(mock_jwt_token, mock_wiki_base_url):
     """Fixture providing JWTAuth instance."""
-    return JWTAuth(mock_jwt_token)
+    return JWTAuth(mock_jwt_token, mock_wiki_base_url)
 
 
 @pytest.fixture
diff --git a/tests/test_client.py b/tests/test_client.py
index 10788bd..9a1fcaa 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -81,40 +81,50 @@ class TestWikiJSClientTestConnection:
         """Mock API key."""
         return "test-api-key-12345"
 
-    @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."""
+    @patch("wikijs.client.requests.Session.request")
+    def test_test_connection_success(self, mock_request, mock_wiki_base_url, mock_api_key):
+        """Test successful connection test using GraphQL query."""
         mock_response = Mock()
+        mock_response.ok = True
         mock_response.status_code = 200
-        mock_get.return_value = mock_response
+        mock_response.json.return_value = {
+            "data": {
+                "site": {
+                    "title": "Test Wiki"
+                }
+            }
+        }
+        mock_request.return_value = mock_response
 
         client = WikiJSClient(mock_wiki_base_url, auth=mock_api_key)
         result = client.test_connection()
 
         assert result is True
+        # Verify it made a POST request to GraphQL endpoint
+        mock_request.assert_called_once()
 
-    @patch("wikijs.client.requests.Session.get")
-    def test_test_connection_timeout(self, mock_get, mock_wiki_base_url, mock_api_key):
+    @patch("wikijs.client.requests.Session.request")
+    def test_test_connection_timeout(self, mock_request, mock_wiki_base_url, mock_api_key):
         """Test connection test timeout."""
         import requests
 
-        mock_get.side_effect = requests.exceptions.Timeout("Request timed out")
+        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="Connection test timed out"):
+        with pytest.raises(TimeoutError):
             client.test_connection()
 
-    @patch("wikijs.client.requests.Session.get")
-    def test_test_connection_error(self, mock_get, mock_wiki_base_url, mock_api_key):
+    @patch("wikijs.client.requests.Session.request")
+    def test_test_connection_error(self, mock_request, mock_wiki_base_url, mock_api_key):
         """Test connection test with connection error."""
         import requests
 
-        mock_get.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="Cannot connect"):
+        with pytest.raises(ConnectionError):
             client.test_connection()
 
     def test_test_connection_no_base_url(self):
@@ -336,7 +346,7 @@ class TestWikiJSClientContextManager:
         mock_session_class.return_value = mock_session
 
         # Mock generic exception during connection test
-        mock_session.get.side_effect = RuntimeError("Unexpected error")
+        mock_session.request.side_effect = RuntimeError("Unexpected error")
 
         client = WikiJSClient("https://wiki.example.com", auth="test-key")
 
diff --git a/wikijs/auth/jwt.py b/wikijs/auth/jwt.py
index 2fdd236..e9fc17f 100644
--- a/wikijs/auth/jwt.py
+++ b/wikijs/auth/jwt.py
@@ -19,17 +19,23 @@ class JWTAuth(AuthHandler):
 
     Args:
         token: The JWT token string.
+        base_url: The base URL of the Wiki.js instance (needed for token refresh).
         refresh_token: Optional refresh token for automatic renewal.
         expires_at: Optional expiration timestamp (Unix timestamp).
 
     Example:
-        >>> auth = JWTAuth("eyJ0eXAiOiJKV1QiLCJhbGc...")
+        >>> auth = JWTAuth(
+        ...     token="eyJ0eXAiOiJKV1QiLCJhbGc...",
+        ...     base_url="https://wiki.example.com",
+        ...     refresh_token="refresh_token_here"
+        ... )
         >>> client = WikiJSClient("https://wiki.example.com", auth=auth)
     """
 
     def __init__(
         self,
         token: str,
+        base_url: str,
         refresh_token: Optional[str] = None,
         expires_at: Optional[float] = None,
     ) -> None:
@@ -37,16 +43,21 @@ class JWTAuth(AuthHandler):
 
         Args:
             token: The JWT token string.
+            base_url: The base URL of the Wiki.js instance.
             refresh_token: Optional refresh token for automatic renewal.
             expires_at: Optional expiration timestamp (Unix timestamp).
 
         Raises:
-            ValueError: If token is empty or None.
+            ValueError: If token or base_url is empty or None.
         """
         if not token or not token.strip():
             raise ValueError("JWT token cannot be empty")
 
+        if not base_url or not base_url.strip():
+            raise ValueError("Base URL cannot be empty")
+
         self._token = token.strip()
+        self._base_url = base_url.strip().rstrip("/")
         self._refresh_token = refresh_token.strip() if refresh_token else None
         self._expires_at = expires_at
         self._refresh_buffer = 300  # Refresh 5 minutes before expiration
@@ -91,15 +102,13 @@ class JWTAuth(AuthHandler):
     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.
+        This method attempts to refresh the JWT token using the refresh token
+        by making a request to the Wiki.js authentication endpoint.
 
         Raises:
             AuthenticationError: If refresh token is not available or refresh fails.
         """
+        import requests
         from ..exceptions import AuthenticationError
 
         if not self._refresh_token:
@@ -107,16 +116,57 @@ class JWTAuth(AuthHandler):
                 "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
+        try:
+            # Make request to Wiki.js token refresh endpoint
+            refresh_url = f"{self._base_url}/api/auth/refresh"
 
-        raise AuthenticationError(
-            "JWT token refresh not yet implemented. "
-            "Please provide a new token or use API key authentication."
-        )
+            response = requests.post(
+                refresh_url,
+                json={"refreshToken": self._refresh_token},
+                headers={
+                    "Content-Type": "application/json",
+                    "Accept": "application/json",
+                },
+                timeout=30,
+            )
+
+            # Check if request was successful
+            if not response.ok:
+                error_msg = "Token refresh failed"
+                try:
+                    error_data = response.json()
+                    error_msg = error_data.get("message", error_msg)
+                except Exception:
+                    pass
+
+                raise AuthenticationError(
+                    f"Failed to refresh JWT token: {error_msg} (HTTP {response.status_code})"
+                )
+
+            # Parse response
+            data = response.json()
+
+            # Update token and expiration
+            if "token" in data:
+                self._token = data["token"]
+
+            if "expiresAt" in data:
+                self._expires_at = data["expiresAt"]
+            elif "expires_at" in data:
+                self._expires_at = data["expires_at"]
+
+            # Optionally update refresh token if a new one is provided
+            if "refreshToken" in data:
+                self._refresh_token = data["refreshToken"]
+
+        except requests.exceptions.RequestException as e:
+            raise AuthenticationError(
+                f"Failed to refresh JWT token: {str(e)}"
+            ) from e
+        except Exception as e:
+            raise AuthenticationError(
+                f"Unexpected error during token refresh: {str(e)}"
+            ) from e
 
     def is_expired(self) -> bool:
         """Check if the JWT token is expired.
diff --git a/wikijs/client.py b/wikijs/client.py
index 144c1bb..e8164f1 100644
--- a/wikijs/client.py
+++ b/wikijs/client.py
@@ -23,6 +23,7 @@ from .utils import (
     normalize_url,
     parse_wiki_response,
 )
+from .version import __version__
 
 
 class WikiJSClient:
@@ -82,7 +83,7 @@ class WikiJSClient:
         # Request configuration
         self.timeout = timeout
         self.verify_ssl = verify_ssl
-        self.user_agent = user_agent or "wikijs-python-sdk/0.1.0"
+        self.user_agent = user_agent or f"wikijs-python-sdk/{__version__}"
 
         # Initialize HTTP session
         self._session = self._create_session()
@@ -229,6 +230,9 @@ class WikiJSClient:
     def test_connection(self) -> bool:
         """Test connection to Wiki.js instance.
 
+        This method validates the connection by making an actual GraphQL query
+        to the Wiki.js API, ensuring both connectivity and authentication work.
+
         Returns:
             True if connection successful
 
@@ -236,6 +240,7 @@ class WikiJSClient:
             ConfigurationError: If client is not properly configured
             ConnectionError: If cannot connect to server
             AuthenticationError: If authentication fails
+            TimeoutError: If connection test times out
         """
         if not self.base_url:
             raise ConfigurationError("Base URL not configured")
@@ -244,20 +249,47 @@ class WikiJSClient:
             raise ConfigurationError("Authentication not configured")
 
         try:
-            # Try to hit a basic endpoint (will implement with actual endpoints)
-            # For now, just test basic connectivity
-            self._session.get(
-                self.base_url, timeout=self.timeout, verify=self.verify_ssl
-            )
+            # Test with minimal GraphQL query to validate API access
+            query = """
+            query {
+                site {
+                    title
+                }
+            }
+            """
+
+            response = self._request("POST", "/graphql", json_data={"query": query})
+
+            # Check for GraphQL errors
+            if "errors" in response:
+                error_msg = response["errors"][0].get("message", "Unknown error")
+                raise AuthenticationError(
+                    f"GraphQL query failed: {error_msg}"
+                )
+
+            # Verify we got expected data structure
+            if "data" not in response or "site" not in response["data"]:
+                raise APIError(
+                    "Unexpected response format from Wiki.js API"
+                )
+
             return True
 
-        except requests.exceptions.Timeout:
-            raise TimeoutError(
-                f"Connection test timed out after {self.timeout} seconds"
-            )
+        except AuthenticationError:
+            # Re-raise authentication errors as-is
+            raise
 
-        except requests.exceptions.ConnectionError as e:
-            raise ConnectionError(f"Cannot connect to {self.base_url}: {str(e)}")
+        except TimeoutError:
+            # Re-raise timeout errors as-is
+            raise
+
+        except ConnectionError:
+            # Re-raise connection errors as-is
+            raise
+
+        except APIError:
+            # Re-raise API errors as-is
+            raise
 
         except Exception as e:
             raise ConnectionError(f"Connection test failed: {str(e)}")
diff --git a/wikijs/exceptions.py b/wikijs/exceptions.py
index 9812bc3..e383f4b 100644
--- a/wikijs/exceptions.py
+++ b/wikijs/exceptions.py
@@ -72,13 +72,19 @@ class RateLimitError(ClientError):
         self.retry_after = retry_after
 
 
-class ConnectionError(WikiJSException):
+class ConnectionError(APIError):
     """Raised when there's a connection issue."""
 
+    def __init__(self, message: str, details: Optional[Dict[str, Any]] = None) -> None:
+        super().__init__(message, status_code=None, response=None, details=details)
 
-class TimeoutError(WikiJSException):
+
+class TimeoutError(APIError):
     """Raised when a request times out."""
 
+    def __init__(self, message: str, details: Optional[Dict[str, Any]] = None) -> None:
+        super().__init__(message, status_code=None, response=None, details=details)
+
 
 def create_api_error(status_code: int, message: str, response: Any = None) -> APIError:
     """Create appropriate API error based on status code.