diff --git a/src/Phalcon/ApiException.php b/src/Phalcon/ApiException.php
index 47e44fc..9b99216 100644
--- a/src/Phalcon/ApiException.php
+++ b/src/Phalcon/ApiException.php
@@ -3,16 +3,36 @@
 
 namespace Phalcon;
 
+use Throwable;
+
 /**
  * Class ApiException
  * @package Phalcon
  */
-class ApiException
+class ApiException extends Exception
 {
 
-    public function __construct()
+    private $error;
+
+    /**
+     * ApiException constructor.
+     * @param string $error
+     * @param string $message
+     * @param int $code
+     * @param Throwable $previous
+     */
+    public function __construct(string $error, string $message, int $code = 0, Throwable $previous = null)
     {
+        $this->error = $error;
+        parent::__construct($message, $code, $previous);
+    }
 
+    /**
+     * @return string
+     */
+    public function getError(): string
+    {
+        return $this->error;
     }
 
 }
diff --git a/src/Phalcon/RequestParams.php b/src/Phalcon/RequestParams.php
new file mode 100644
index 0000000..a384dea
--- /dev/null
+++ b/src/Phalcon/RequestParams.php
@@ -0,0 +1,112 @@
+<?php
+declare(strict_types=1);
+
+namespace Phalcon;
+
+/**
+ * Class Request
+ */
+class RequestParams
+{
+    static private $json_data = [];
+    static private $filter = null;
+
+    /**
+     * @return array
+     */
+    static public function getJson(): array
+    {
+        if (count(self::$json_data) === 0)
+            self::$json_data = json_decode(file_get_contents("php://input"), true) ?? [];
+        return self::$json_data;
+    }
+
+    /**
+     * @return \Phalcon\Filter
+     */
+    static public function getFilter()
+    {
+        if (self::$filter === null)
+            self::$filter = new \Phalcon\Filter();
+        return self::$filter;
+    }
+//
+
+    /**
+     * @param string $name
+     * @return string
+     */
+    static public function getAlphaNum(string $name): string
+    {
+        $val = self::get($name);
+        return (string)(self::getFilter()->sanitize($val, 'alphanum'));
+    }
+
+    /**
+     * 'Y' => array('year', '\d{4}'),
+     * 'y' => array('year', '\d{2}'),
+     * 'm' => array('month', '\d{2}'),
+     * 'n' => array('month', '\d{1,2}'),
+     * 'M' => array('month', '[A-Z][a-z]{3}'),
+     * 'F' => array('month', '[A-Z][a-z]{2,8}'),
+     * 'd' => array('day', '\d{2}'),
+     * 'j' => array('day', '\d{1,2}'),
+     * 'D' => array('day', '[A-Z][a-z]{2}'),
+     * 'l' => array('day', '[A-Z][a-z]{6,9}'),
+     * 'u' => array('hour', '\d{1,6}'),
+     * 'h' => array('hour', '\d{2}'),
+     * 'H' => array('hour', '\d{2}'),
+     * 'g' => array('hour', '\d{1,2}'),
+     * 'G' => array('hour', '\d{1,2}'),
+     * 'i' => array('minute', '\d{2}'),
+     * 's' => array('second', '\d{2}')
+     *
+     * d.m.Y H:i:s
+     *
+     * @param string $name
+     * @param string $format
+     * @return \DateTime|null
+     */
+    static public function getDate(string $name, string $format = 'd.m.Y'): ?\DateTime
+    {
+        $date = \DateTime::createFromFormat($format, self::get($name));
+        if ($date === false)
+            return null;
+        return $date;
+    }
+
+    /**
+     * @param string $name
+     * @return mixed|null
+     */
+    static public function get(string $name)
+    {
+        $val = null;
+        if (isset($_REQUEST[$name]))
+            $val = $_REQUEST[$name];
+        else if (isset(self::getJson()[$name]))
+            $val = self::getJson()[$name];
+        if ($val === null)
+            return $val;
+        return $val;
+    }
+
+    /**
+     * @param string $name
+     * @return int|null
+     */
+    static public function getInit(string $name): ?int
+    {
+        $val = self::get($name);
+        return (int)(self::getFilter()->sanitize($val, 'int'));
+    }
+
+    /**
+     * @param string $name
+     * @return int
+     */
+    static public function getInitNoNull(string $name): int
+    {
+        return (int)self::getInit($name);
+    }
+}