diff --git a/engine/Api/V1/Authorization.php b/engine/Api/V1/Authorization.php
index ccf19ee5..627f8309 100644
--- a/engine/Api/V1/Authorization.php
+++ b/engine/Api/V1/Authorization.php
@@ -19,6 +19,8 @@ use \EA\Engine\Types\NonEmptyText;
  * API v1 Authorization Class
  *
  * This class will handle the authorization procedure of the API.
+ *
+ * @deprecated
  */
 class Authorization {
     /**
diff --git a/engine/Api/V1/Exception.php b/engine/Api/V1/Exception.php
index d2ba6f2c..5b7f4088 100644
--- a/engine/Api/V1/Exception.php
+++ b/engine/Api/V1/Exception.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1;
  * API v1 Exception Class
  *
  * This exception variation will hold the information needed for exception handling in the API.
+ *
+ * @deprecated
  */
 class Exception extends \Exception {
     /**
diff --git a/engine/Api/V1/Parsers/Admins.php b/engine/Api/V1/Parsers/Admins.php
index 7beb3752..674571e3 100644
--- a/engine/Api/V1/Parsers/Admins.php
+++ b/engine/Api/V1/Parsers/Admins.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Admins Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Admins implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Appointments.php b/engine/Api/V1/Parsers/Appointments.php
index cfc3b8e3..273974e8 100644
--- a/engine/Api/V1/Parsers/Appointments.php
+++ b/engine/Api/V1/Parsers/Appointments.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Appointments Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Appointments implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Categories.php b/engine/Api/V1/Parsers/Categories.php
index 610f3b42..ae7a7996 100644
--- a/engine/Api/V1/Parsers/Categories.php
+++ b/engine/Api/V1/Parsers/Categories.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Categories Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Categories implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Customers.php b/engine/Api/V1/Parsers/Customers.php
index 1c2d5a0b..f1c3fb34 100644
--- a/engine/Api/V1/Parsers/Customers.php
+++ b/engine/Api/V1/Parsers/Customers.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Customers Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Customers implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/ParsersInterface.php b/engine/Api/V1/Parsers/ParsersInterface.php
index 6262e9b8..8b103297 100644
--- a/engine/Api/V1/Parsers/ParsersInterface.php
+++ b/engine/Api/V1/Parsers/ParsersInterface.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Parsers Interface
  *
  * Every parser needs the "encode" and "decode" methods.
+ *
+ * @deprecated
  */
 interface ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Providers.php b/engine/Api/V1/Parsers/Providers.php
index 663c93d4..948652dd 100644
--- a/engine/Api/V1/Parsers/Providers.php
+++ b/engine/Api/V1/Parsers/Providers.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Providers Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Providers implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Secretaries.php b/engine/Api/V1/Parsers/Secretaries.php
index 1ed1513a..a487e10c 100644
--- a/engine/Api/V1/Parsers/Secretaries.php
+++ b/engine/Api/V1/Parsers/Secretaries.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Secretaries Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Secretaries implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Services.php b/engine/Api/V1/Parsers/Services.php
index 7720b4f1..82a40fd7 100644
--- a/engine/Api/V1/Parsers/Services.php
+++ b/engine/Api/V1/Parsers/Services.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Services Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Services implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Settings.php b/engine/Api/V1/Parsers/Settings.php
index b544d1bb..ef0a713a 100644
--- a/engine/Api/V1/Parsers/Settings.php
+++ b/engine/Api/V1/Parsers/Settings.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Settings Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Settings implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Parsers/Unavailabilities.php b/engine/Api/V1/Parsers/Unavailabilities.php
index 88e22b53..87b49b30 100644
--- a/engine/Api/V1/Parsers/Unavailabilities.php
+++ b/engine/Api/V1/Parsers/Unavailabilities.php
@@ -17,6 +17,8 @@ namespace EA\Engine\Api\V1\Parsers;
  * Unavailabilities Parser
  *
  * This class will handle the encoding and decoding from the API requests.
+ *
+ * @deprecated
  */
 class Unavailabilities implements ParsersInterface {
     /**
diff --git a/engine/Api/V1/Processors/Filter.php b/engine/Api/V1/Processors/Filter.php
index 4f1fa2f2..4580d92b 100644
--- a/engine/Api/V1/Processors/Filter.php
+++ b/engine/Api/V1/Processors/Filter.php
@@ -20,6 +20,8 @@ namespace EA\Engine\Api\V1\Processors;
  * easier to apply some custom filtering in order to get the required results.
  *
  * @todo Implement this processor class.
+ *
+ * @deprecated
  */
 class Filter implements ProcessorsInterface {
     /**
diff --git a/engine/Api/V1/Processors/Minimize.php b/engine/Api/V1/Processors/Minimize.php
index 35b13801..63631219 100644
--- a/engine/Api/V1/Processors/Minimize.php
+++ b/engine/Api/V1/Processors/Minimize.php
@@ -22,6 +22,8 @@ namespace EA\Engine\Api\V1\Processors;
  *
  * Make sure that the response parameter is a sequential array and not a single entry by the time this
  * processor is executed.
+ *
+ * @deprecated
  */
 class Minimize implements ProcessorsInterface {
     /**
diff --git a/engine/Api/V1/Processors/Paginate.php b/engine/Api/V1/Processors/Paginate.php
index 4cc209cd..031f6a2b 100644
--- a/engine/Api/V1/Processors/Paginate.php
+++ b/engine/Api/V1/Processors/Paginate.php
@@ -22,6 +22,8 @@ namespace EA\Engine\Api\V1\Processors;
  *
  * Make sure that the response parameter is a sequential array and not a single entry by the time this
  * processor is executed.
+ *
+ * @deprecated
  */
 class Paginate implements ProcessorsInterface {
     /**
diff --git a/engine/Api/V1/Processors/ProcessorsInterface.php b/engine/Api/V1/Processors/ProcessorsInterface.php
index fe087dba..4cb34e8a 100644
--- a/engine/Api/V1/Processors/ProcessorsInterface.php
+++ b/engine/Api/V1/Processors/ProcessorsInterface.php
@@ -13,6 +13,13 @@
 
 namespace EA\Engine\Api\V1\Processors;
 
+/**
+ * Interface ProcessorsInterface
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Api\V1\Processors
+ */
 interface ProcessorsInterface {
     public static function process(array &$response);
-} 
+}
diff --git a/engine/Api/V1/Processors/Search.php b/engine/Api/V1/Processors/Search.php
index 31166b41..fd89d0bb 100644
--- a/engine/Api/V1/Processors/Search.php
+++ b/engine/Api/V1/Processors/Search.php
@@ -19,6 +19,8 @@ namespace EA\Engine\Api\V1\Processors;
  * This class will search the response with the "q" GET parameter and only provide the entries
  * that match the keyword. Make sure that the response parameter is a sequential array and not
  * a single entry by the time this processor is executed.
+ *
+ * @deprecated
  */
 class Search implements ProcessorsInterface {
     /**
diff --git a/engine/Api/V1/Processors/Sort.php b/engine/Api/V1/Processors/Sort.php
index 5a054735..234166b8 100644
--- a/engine/Api/V1/Processors/Sort.php
+++ b/engine/Api/V1/Processors/Sort.php
@@ -19,6 +19,8 @@ namespace EA\Engine\Api\V1\Processors;
  * This class will sort the response array with the provided GET parameters. Make sure that the
  * response parameter is a sequential array and not a single entry by the time this processor is
  * executed.
+ *
+ * @deprecated
  */
 class Sort implements ProcessorsInterface {
     /**
diff --git a/engine/Api/V1/Request.php b/engine/Api/V1/Request.php
index 0d650d96..9c3fd8f3 100644
--- a/engine/Api/V1/Request.php
+++ b/engine/Api/V1/Request.php
@@ -18,6 +18,8 @@ namespace EA\Engine\Api\V1;
  *
  * This class handles the common request handling before the data are manipulated and
  * returned back with the Response class.
+ *
+ * @deprecated
  */
 class Request {
     /**
diff --git a/engine/Api/V1/Response.php b/engine/Api/V1/Response.php
index a0e58a90..49f1cb4d 100644
--- a/engine/Api/V1/Response.php
+++ b/engine/Api/V1/Response.php
@@ -25,6 +25,8 @@ use EA\Engine\Types\NonEmptyText;
  *   $parser = new \EA\Engine\Api\V1\Parsers\Appointments;
  *   $response = new \EA\Engine\Api\V1\Response($data);
  *   $response->format($parser)->search()->sort()->paginate()->minimize()->output();
+ *
+ * @deprecated
  */
 class Response {
     /**
diff --git a/engine/Notifications/Email.php b/engine/Notifications/Email.php
index b83eeeda..d028c725 100755
--- a/engine/Notifications/Email.php
+++ b/engine/Notifications/Email.php
@@ -24,6 +24,8 @@ use \EA\Engine\Types\Email as EmailAddress;
  * This library handles all the notification email deliveries on the system.
  *
  * Important: The email configuration settings are located at: /application/config/email.php
+ *
+ * @deprecated
  */
 class Email {
     /**
diff --git a/engine/Types/Boolean.php b/engine/Types/Boolean.php
index f15349e1..2f0a1aa2 100644
--- a/engine/Types/Boolean.php
+++ b/engine/Types/Boolean.php
@@ -13,7 +13,18 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class Boolean
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class Boolean extends Type {
+    /**
+     * @param mixed $value
+     * @return bool
+     */
     protected function _validate($value)
     {
         return is_bool($value);
diff --git a/engine/Types/Decimal.php b/engine/Types/Decimal.php
index 5f63271a..d30a37b3 100644
--- a/engine/Types/Decimal.php
+++ b/engine/Types/Decimal.php
@@ -13,7 +13,19 @@
 
 namespace EA\Engine\Types;
 
+
+/**
+ * Class Decimal
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class Decimal extends Type {
+    /**
+     * @param mixed $value
+     * @return bool
+     */
     protected function _validate($value)
     {
         return is_float($value);
diff --git a/engine/Types/Email.php b/engine/Types/Email.php
index 3d7a8104..f3722c79 100644
--- a/engine/Types/Email.php
+++ b/engine/Types/Email.php
@@ -13,6 +13,13 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class Email
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class Email extends NonEmptyText {
     protected function _validate($value)
     {
diff --git a/engine/Types/Integer.php b/engine/Types/Integer.php
index 1f5667c9..60f32511 100644
--- a/engine/Types/Integer.php
+++ b/engine/Types/Integer.php
@@ -13,7 +13,18 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class Integer
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class Integer extends Type {
+    /**
+     * @param mixed $value
+     * @return bool
+     */
     protected function _validate($value)
     {
         return is_numeric($value) && ! is_float($value);
diff --git a/engine/Types/NonEmptyText.php b/engine/Types/NonEmptyText.php
index b2dcfc54..ea0ef01b 100644
--- a/engine/Types/NonEmptyText.php
+++ b/engine/Types/NonEmptyText.php
@@ -13,7 +13,18 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class NonEmptyText
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class NonEmptyText extends Text {
+    /**
+     * @param mixed $value
+     * @return bool
+     */
     protected function _validate($value)
     {
         return parent::_validate($value) && $value !== '';
diff --git a/engine/Types/Text.php b/engine/Types/Text.php
index d738b81d..518aa800 100644
--- a/engine/Types/Text.php
+++ b/engine/Types/Text.php
@@ -13,6 +13,13 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class Text
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class Text extends Type {
     protected function _validate($value)
     {
diff --git a/engine/Types/Type.php b/engine/Types/Type.php
index 31547aed..d2298959 100644
--- a/engine/Types/Type.php
+++ b/engine/Types/Type.php
@@ -16,6 +16,8 @@ namespace EA\Engine\Types;
 /**
  * Abstract Type Class
  *
+ * @deprecated
+ *
  * This class needs to be extended by the type classes which must implement the validation logic.
  */
 abstract class Type {
diff --git a/engine/Types/UnsignedInteger.php b/engine/Types/UnsignedInteger.php
index 30a47a8a..de775916 100644
--- a/engine/Types/UnsignedInteger.php
+++ b/engine/Types/UnsignedInteger.php
@@ -13,7 +13,18 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class UnsignedInteger
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class UnsignedInteger extends Integer {
+    /**
+     * @param mixed $value
+     * @return bool
+     */
     protected function _validate($value)
     {
         return parent::_validate($value) && $value > -1;
diff --git a/engine/Types/Url.php b/engine/Types/Url.php
index e836adf3..af7870be 100644
--- a/engine/Types/Url.php
+++ b/engine/Types/Url.php
@@ -13,7 +13,18 @@
 
 namespace EA\Engine\Types;
 
+/**
+ * Class Url
+ *
+ * @deprecated
+ *
+ * @package EA\Engine\Types
+ */
 class Url extends NonEmptyText {
+    /**
+     * @param mixed $value
+     * @return bool
+     */
     protected function _validate($value)
     {
         return parent::_validate($value) && filter_var($value, FILTER_VALIDATE_URL);