diff --git a/docs/source/conf.py b/docs/source/conf.py
index 74403b1..62b35df 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -34,10 +34,14 @@
     "private-members": False,
 }
 
+
+# TODO: Make the flask intermapping work
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3/", None),
     "sphinx": ("https://www.sphinx-doc.org/en/master/", None),
+    "flask": ("https://flask.palletsprojects.com/en/2.0.x/", None),
 }
+
 intersphinx_disabled_domains = ["std"]
 
 templates_path = ["_templates"]
diff --git a/flask_utils/__init__.py b/flask_utils/__init__.py
index 81d8b8c..06b02a6 100644
--- a/flask_utils/__init__.py
+++ b/flask_utils/__init__.py
@@ -1,5 +1,5 @@
 # Increment versions here according to SemVer
-__version__ = "0.7.0"
+__version__ = "0.7.1"
 
 from flask_utils.utils import is_it_true
 from flask_utils.errors import GoneError
diff --git a/flask_utils/decorators.py b/flask_utils/decorators.py
index 9d4a51e..7abf242 100644
--- a/flask_utils/decorators.py
+++ b/flask_utils/decorators.py
@@ -41,7 +41,10 @@ def _is_optional(type_hint: Type) -> bool:  # type: ignore
     """Check if the type hint is :data:`~typing.Optional`.
 
     :param type_hint: Type hint to check.
+    :type type_hint: Type
+
     :return: True if the type hint is :data:`~typing.Optional`, False otherwise.
+    :rtype: bool
 
     :Example:
 
@@ -62,7 +65,10 @@ def _make_optional(type_hint: Type) -> Type:  # type: ignore
     """Wrap type hint with :data:`~typing.Optional` if it's not already.
 
     :param type_hint: Type hint to wrap.
+    :type type_hint: Type
+
     :return: Type hint wrapped with :data:`~typing.Optional`.
+    :rtype: Type
 
     :Example:
 
@@ -85,10 +91,14 @@ def _is_allow_empty(value: Any, type_hint: Type, allow_empty: bool) -> bool:  #
     """Determine if the value is considered empty and whether it's allowed.
 
     :param value: Value to check.
+    :type value: Any
     :param type_hint: Type hint to check against.
+    :type type_hint: Type
     :param allow_empty: Whether to allow empty values.
+    :type allow_empty: bool
 
     :return: True if the value is empty and allowed, False otherwise.
+    :rtype: bool
 
     :Example:
 
@@ -118,11 +128,16 @@ def _check_type(value: Any, expected_type: Type, allow_empty: bool = False, curr
     """Check if the value matches the expected type, recursively if necessary.
 
     :param value: Value to check.
+    :type value: Any
     :param expected_type: Expected type.
+    :type expected_type: Type
     :param allow_empty: Whether to allow empty values.
+    :type allow_empty: bool
     :param curr_depth: Current depth of the recursive check.
+    :type curr_depth: int
 
     :return: True if the value matches the expected type, False otherwise.
+    :rtype: bool
 
     :Example:
 
@@ -202,7 +217,9 @@ def validate_params(
 
     :param parameters: Dictionary of parameters to validate. The keys are parameter names
                        and the values are the expected types.
+    :type parameters: Dict[Any, Any]
     :param allow_empty: Allow empty values for parameters. Defaults to False.
+    :type allow_empty: bool
 
     :raises BadRequestError: If the JSON body is malformed,
         the Content-Type header is missing or incorrect, required parameters are missing,
diff --git a/flask_utils/errors/__init__.py b/flask_utils/errors/__init__.py
index d32f7db..d0f5c0a 100644
--- a/flask_utils/errors/__init__.py
+++ b/flask_utils/errors/__init__.py
@@ -20,7 +20,10 @@ def _register_error_handlers(application: Flask) -> None:
     This function will register all the error handlers for the application
 
     :param application: The Flask application to register the error handlers
+    :type application: flask.Flask
+
     :return: None
+    :rtype: None
 
     .. versionchanged:: 0.5.0
         Made the function private. If you want to register the custom error handlers, you need to
@@ -50,7 +53,10 @@ def generate_badrequest(error: BadRequestError) -> Response:
         a custom message and the 400 code
 
         :param error: The error body
+        :type error: BadRequestError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
         return _generate_error_json(error, 400)
 
@@ -61,7 +67,10 @@ def generate_conflict(error: ConflictError) -> Response:
         a custom message and the 409 code
 
         :param error: The error body
+        :type error: ConflictError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 409)
@@ -73,7 +82,10 @@ def generate_forbidden(error: ForbiddenError) -> Response:
         a custom message and the 403 code
 
         :param error: The error body
+        :type error: ForbiddenError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 403)
@@ -85,7 +97,10 @@ def generate_notfound(error: NotFoundError) -> Response:
         a custom message and the 404 code.
 
         :param error: The error body
+        :type error: NotFoundError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 404)
@@ -97,7 +112,10 @@ def generate_unauthorized(error: UnauthorizedError) -> Response:
         a custom message and the 401 code.
 
         :param error: The error body
+        :type error: UnauthorizedError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 401)
@@ -109,7 +127,10 @@ def generate_origin_is_unreachable(error: OriginIsUnreachableError) -> Response:
         a custom message and the 523 code.
 
         :param error: The error body
+        :type error: OriginIsUnreachableError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 523)
@@ -121,7 +142,10 @@ def generate_web_server_is_down(error: WebServerIsDownError) -> Response:
         a custom message and the 521 code.
 
         :param error: The error body
+        :type error: WebServerIsDownError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 521)
@@ -133,7 +157,10 @@ def generate_failed_dependency(error: FailedDependencyError) -> Response:
         a custom message and the 424 code.
 
         :param error: The error body
+        :type error: FailedDependencyError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 424)
@@ -145,7 +172,10 @@ def generate_gone(error: GoneError) -> Response:
         a custom message and the 410 code.
 
         :param error: The error body
+        :type error: GoneError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 410)
@@ -157,7 +187,10 @@ def generate_unprocessable_entity(error: UnprocessableEntityError) -> Response:
         a custom message and the 422 code.
 
         :param error: The error body
+        :type error: UnprocessableEntityError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 422)
@@ -169,7 +202,10 @@ def generate_service_unavailable(error: ServiceUnavailableError) -> Response:
         a custom message and the 503 code.
 
         :param error: The error body
+        :type error: ServiceUnavailableError
+
         :return: Returns the response formatted
+        :rtype: flask.Response
         """
 
         return _generate_error_json(error, 503)
diff --git a/flask_utils/errors/_error_template.py b/flask_utils/errors/_error_template.py
index 15714e8..f8ce779 100644
--- a/flask_utils/errors/_error_template.py
+++ b/flask_utils/errors/_error_template.py
@@ -9,8 +9,13 @@ def _generate_error_json(error: _BaseFlaskException, status_code: int) -> Respon
     This function is used to generate a json of the error passed
 
     :param error: The error containing the message and solution
+    :type error: _BaseFlaskException
+
     :param status_code: The status code of the error.
+    :type status_code: int
+
     :return: Returns a json containing all the info
+    :rtype: flask.Response
 
     :Example:
 
diff --git a/flask_utils/errors/badrequest.py b/flask_utils/errors/badrequest.py
index b79c24a..d103183 100644
--- a/flask_utils/errors/badrequest.py
+++ b/flask_utils/errors/badrequest.py
@@ -9,7 +9,9 @@ class BadRequestError(_BaseFlaskException):
     When raised, it will return a 400 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/base_class.py b/flask_utils/errors/base_class.py
index e68ea55..d28df2a 100644
--- a/flask_utils/errors/base_class.py
+++ b/flask_utils/errors/base_class.py
@@ -2,6 +2,34 @@
 
 
 class _BaseFlaskException(Exception):
+    """
+    This is the base class for all the exceptions in this package.
+
+    :param msg: The message to be displayed in the error.
+    :type msg: str
+    :param solution: The solution to the error.
+    :type solution: Optional[str]
+    :param status_code: The status code of the error.
+    :type status_code: Optional[int]
+    :param name: The name of the error.
+    :type name: Optional[str]
+
+    :Example:
+
+    .. code-block:: python
+
+        from flask_utils.errors import _BaseFlaskException
+
+        class MyError(_BaseFlaskException):
+            self.name = "MyError"
+            self.msg = msg
+            self.solution = solution
+            self.status_code = 666
+
+    .. versionadded:: 0.1.0
+    """
+
     name: Optional[str] = None
     msg: Optional[str] = None
     solution: Optional[str] = "Try again."
+    status_code: Optional[int] = 400
diff --git a/flask_utils/errors/conflict.py b/flask_utils/errors/conflict.py
index 6cc4a60..4bea39f 100644
--- a/flask_utils/errors/conflict.py
+++ b/flask_utils/errors/conflict.py
@@ -9,7 +9,9 @@ class ConflictError(_BaseFlaskException):
     When raised, it will return a 409 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/failed_dependency.py b/flask_utils/errors/failed_dependency.py
index b83f37b..533a909 100644
--- a/flask_utils/errors/failed_dependency.py
+++ b/flask_utils/errors/failed_dependency.py
@@ -9,7 +9,9 @@ class FailedDependencyError(_BaseFlaskException):
     When raised, it will return a 424 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/forbidden.py b/flask_utils/errors/forbidden.py
index 10c3d11..5978e83 100644
--- a/flask_utils/errors/forbidden.py
+++ b/flask_utils/errors/forbidden.py
@@ -9,7 +9,9 @@ class ForbiddenError(_BaseFlaskException):
     When raised, it will return a 403 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/gone.py b/flask_utils/errors/gone.py
index 7b33fe6..81377cd 100644
--- a/flask_utils/errors/gone.py
+++ b/flask_utils/errors/gone.py
@@ -9,7 +9,9 @@ class GoneError(_BaseFlaskException):
     When raised, it will return a 410 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/notfound.py b/flask_utils/errors/notfound.py
index 649800f..128e807 100644
--- a/flask_utils/errors/notfound.py
+++ b/flask_utils/errors/notfound.py
@@ -9,7 +9,9 @@ class NotFoundError(_BaseFlaskException):
     When raised, it will return 404 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/origin_is_unreachable.py b/flask_utils/errors/origin_is_unreachable.py
index 2558044..48990c8 100644
--- a/flask_utils/errors/origin_is_unreachable.py
+++ b/flask_utils/errors/origin_is_unreachable.py
@@ -9,7 +9,9 @@ class OriginIsUnreachableError(_BaseFlaskException):
     When raised, it will return a 523 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/service_unavailable.py b/flask_utils/errors/service_unavailable.py
index c814a19..dfcd3b6 100644
--- a/flask_utils/errors/service_unavailable.py
+++ b/flask_utils/errors/service_unavailable.py
@@ -9,7 +9,9 @@ class ServiceUnavailableError(_BaseFlaskException):
     When raised, it will return a 503 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/unauthorized.py b/flask_utils/errors/unauthorized.py
index 6751a25..6811a1d 100644
--- a/flask_utils/errors/unauthorized.py
+++ b/flask_utils/errors/unauthorized.py
@@ -9,7 +9,9 @@ class UnauthorizedError(_BaseFlaskException):
     When raised, it will return a 401 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/unprocessableentity.py b/flask_utils/errors/unprocessableentity.py
index 63afbb8..d4db72f 100644
--- a/flask_utils/errors/unprocessableentity.py
+++ b/flask_utils/errors/unprocessableentity.py
@@ -9,7 +9,9 @@ class UnprocessableEntityError(_BaseFlaskException):
     When raised, it will return a 422 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/errors/web_server_is_down.py b/flask_utils/errors/web_server_is_down.py
index 8ded8ee..42797b3 100644
--- a/flask_utils/errors/web_server_is_down.py
+++ b/flask_utils/errors/web_server_is_down.py
@@ -9,7 +9,9 @@ class WebServerIsDownError(_BaseFlaskException):
     When raised, it will return a 521 status code with the message and solution provided.
 
     :param msg: The message to be displayed in the error.
+    :type msg: str
     :param solution: The solution to the error.
+    :type solution: Optional[str]
 
     :Example:
 
diff --git a/flask_utils/extension.py b/flask_utils/extension.py
index 368e3d1..3ed1610 100644
--- a/flask_utils/extension.py
+++ b/flask_utils/extension.py
@@ -13,7 +13,10 @@ class FlaskUtils(object):
     Call :meth:`init_app` to configure the extension on an application.
 
     :param app: Flask application instance.
-    :param register_error_handlers: Register the custom error handlers. Default is True.
+    :type app: Optional[Flask]
+
+    :param register_error_handlers: Register the custom error handlers. Default is ``True``.
+    :param register_error_handlers: bool
 
     :Example:
 
@@ -34,6 +37,30 @@ class FlaskUtils(object):
     """
 
     def __init__(self, app: Optional[Flask] = None, register_error_handlers: bool = True):
+        """
+        :param app: Flask application instance.
+        :type app: Optional[Flask]
+
+        :param register_error_handlers: Register the custom error handlers. Default is ``True``.
+        :type register_error_handlers: bool
+
+        :Example:
+
+        .. code-block:: python
+
+                from flask import Flask
+                from flask_utils import FlaskUtils
+
+                app = Flask(__name__)
+                fu = FlaskUtils(app)
+
+                # or
+
+                fu = FlaskUtils()
+                fu.init_app(app)
+
+        .. versionadded:: 0.5.0
+        """
         self.has_error_handlers_registered = False
 
         if app is not None:
@@ -42,7 +69,10 @@ def __init__(self, app: Optional[Flask] = None, register_error_handlers: bool =
     def init_app(self, app: Flask, register_error_handlers: bool = True) -> None:
         """
         :param app: The Flask application to initialize.
+        :type app: Flask
+
         :param register_error_handlers: Register the custom error handlers. Default is ``True``.
+        :type register_error_handlers: bool
 
         Initialize a Flask application for use with this extension instance. This
         must be called before any request is handled by the application.
diff --git a/flask_utils/utils.py b/flask_utils/utils.py
index f8d3120..5d21f60 100644
--- a/flask_utils/utils.py
+++ b/flask_utils/utils.py
@@ -4,7 +4,10 @@ def is_it_true(value: str) -> bool:
     Useful for flask's request.form.get() method and request.args.get() method
 
     :param value: String value to check if it is true
+    :type value: str
+
     :return: True if value is true, False otherwise
+    :rtype: bool
 
     :Example: