diff --git a/lib/API/Route.php b/lib/API/Route.php
index 1befefb..a56568a 100644
--- a/lib/API/Route.php
+++ b/lib/API/Route.php
@@ -35,6 +35,14 @@ class Route {
 	 */
 	private $callback;
 
+	/**
+	 * Callback to get arguments.
+	 * 
+	 * @since 0.0.0
+	 * @var   array
+	 */
+	private $args = [];
+
 	/**
 	 * Route configuration.
 	 *
@@ -43,11 +51,12 @@ class Route {
 	 * @param string $method   HTTP Method.
 	 * @param array  $callback Callback that responsed to endpoint.
 	 */
-	public function __construct( string $endpoint, string $method, array $callback ) {
+	public function __construct( string $endpoint, string $method, array $callback, array $args = [] ) {
 
 		$this->endpoint = $endpoint;
 		$this->method   = $method;
 		$this->callback = $callback;
+		$this->args     = $args;
 	}
 
 	/**
@@ -79,4 +88,14 @@ public function method() : string {
 	public function callback() : array {
 		return $this->callback;
 	}
+
+	/**
+	 * Returns the arguments.
+	 *
+	 * @since  0.0.0
+	 * @return array
+	 */
+	public function args() : array {
+		return $this->args;
+	}
 }
diff --git a/lib/API/Routes.php b/lib/API/Routes.php
index 9b633b6..80aca12 100644
--- a/lib/API/Routes.php
+++ b/lib/API/Routes.php
@@ -62,8 +62,9 @@ public function __construct( string $namespace, $permission = null ) {
 	 * @param string $method   HTTP method.
 	 * @param object $class    Object that will handle the callback.
 	 * @param string $callback Custom method to answer to the endpoint.
+	 * @param array  $args     register_route arguments
 	 */
-	public function add( string $endpoint, string $method, $class, $callback = null ) {
+	public function add( string $endpoint, string $method, $class, $callback = null, array $args = [] ) {
 
 		$method = strtolower( $method );
 
@@ -91,7 +92,7 @@ public function add( string $endpoint, string $method, $class, $callback = null
 			return;
 		}
 
-		$this->routes[] = new Route( $endpoint, $method, [ $class, $callback ] );
+		$this->routes[] = new Route( $endpoint, $method, [ $class, $callback ], $args );
 	}
 
 	/**
@@ -114,10 +115,13 @@ public function register() {
 
 		foreach ( $this->routes as $route ) {
 
+			$args = null;
+
 			register_rest_route( $this->namespace, $route->endpoint(), [
 				'methods'             => $route->method(),
 				'callback'            => $route->callback(),
 				'permission_callback' => $permission,
+				'args'                => $route->args(),
 			] );
 		}
 	}