diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..c94840d
Binary files /dev/null and b/.DS_Store differ
diff --git a/app/code/Riskified/Decider/Api/Api.php b/app/code/Riskified/Decider/Api/Api.php
index 7917a25..dc2b3da 100644
--- a/app/code/Riskified/Decider/Api/Api.php
+++ b/app/code/Riskified/Decider/Api/Api.php
@@ -15,6 +15,7 @@ class Api
     const ACTION_UPDATE = 'update';
     const ACTION_SUBMIT = 'submit';
     const ACTION_CANCEL = 'cancel';
+    const ACTION_REFUND = 'refund';
     const ACTION_FULFILL = 'fulfill';
 
     private $version;
diff --git a/app/code/Riskified/Decider/Api/Order.php b/app/code/Riskified/Decider/Api/Order.php
index bb3894e..6ca6a88 100755
--- a/app/code/Riskified/Decider/Api/Order.php
+++ b/app/code/Riskified/Decider/Api/Order.php
@@ -84,6 +84,10 @@ public function post($order, $action)
                     $orderForTransport = $this->_orderHelper->getOrderCancellation();
                     $response = $transport->cancelOrder($orderForTransport);
                     break;
+                case Api::ACTION_REFUND:
+                    $orderForTransport = $this->loadRefund();
+                    $response = $transport->refundOrder($orderForTransport);
+                    break;
                 case Api::ACTION_FULFILL:
                     $orderForTransport = $this->_orderHelper->getOrderFulfillments();
                     $response = $transport->fulfillOrder($orderForTransport);
@@ -152,6 +156,16 @@ private function getCustomerSession()
         return $objectManager->get('Magento\Customer\Model\Session');
     }
 
+    private function loadRefund()
+    {
+        $refund = new Model\Refund();
+        $refund->id = strval($this->_orderHelper->getOrderOrigId());
+        $refundDetails = $this->_orderHelper->getRefundDetails();
+        $refund->refunds = array_filter($refundDetails, 'strlen');
+
+        return $refund;
+    }
+
     private function load($model)
     {
         $gateway = 'unavailable';
diff --git a/app/code/Riskified/Decider/Api/Order/Helper.php b/app/code/Riskified/Decider/Api/Order/Helper.php
index 9a06302..de946e5 100755
--- a/app/code/Riskified/Decider/Api/Order/Helper.php
+++ b/app/code/Riskified/Decider/Api/Order/Helper.php
@@ -206,6 +206,35 @@ public function getAddress($address)
         }
         return new Model\Address($addrArray);
     }
+    public function buildRefundDetailsObject($payload)
+    {
+        $refundObject = new Model\RefundDetails(array_filter(array(
+            'refund_id' => $payload->getIncrementId(),
+            'amount' => $payload->getSubtotal(),
+            'currency' => $payload->getBaseCurrencyCode(),
+            'refunded_at' => $payload->getCreatedAt(),
+            'reason' => $payload->getCustomerNote()
+        ), 'strlen'));
+
+        return $refundObject;
+    }
+    public function getRefundDetails()
+    {
+        $order = $this->getOrder();
+        $creditMemos = $order->getCreditmemosCollection();
+        $refundObjectCollection = array();
+        if($creditMemos->getSize() > 0){
+            foreach($creditMemos as $memo){
+                array_push($refundObjectCollection, $this->buildRefundDetailsObject($memo));
+            }
+        }
+        $currentMemo = $this->getCreditMemoFromRegistry();
+        if(!is_null($currentMemo)){
+            array_push($refundObjectCollection, $this->buildRefundDetailsObject($currentMemo));
+        }
+
+        return $refundObjectCollection;
+    }
     public function getPaymentDetails()
     {
         $payment = $this->getOrder()->getPayment();
diff --git a/app/code/Riskified/Decider/Observer/OrderPaymentRefund.php b/app/code/Riskified/Decider/Observer/OrderPaymentRefund.php
index 665e44b..17fa033 100644
--- a/app/code/Riskified/Decider/Observer/OrderPaymentRefund.php
+++ b/app/code/Riskified/Decider/Observer/OrderPaymentRefund.php
@@ -9,13 +9,16 @@ class OrderPaymentRefund implements ObserverInterface
     private $logger;
     private $apiOrderLayer;
     private $messageManager;
+    private $registry;
 
     public function __construct(
+        \Magento\Framework\Registry $registry,
         \Riskified\Decider\Api\Log $logger,
         \Riskified\Decider\Api\Order $orderApi,
         \Magento\Framework\Message\ManagerInterface $messageManager
     )
     {
+        $this->registry = $registry;
         $this->logger = $logger;
         $this->apiOrderLayer = $orderApi;
         $this->messageManager = $messageManager;
@@ -25,7 +28,9 @@ public function execute(\Magento\Framework\Event\Observer $observer)
     {
         try {
             $order = $observer->getPayment()->getOrder();
-            $this->apiOrderLayer->post($order, Api::ACTION_CANCEL);
+            $creditMemo = $observer->getEvent()->getCreditmemo();
+            $this->saveMemoInRegistry($creditMemo);
+            $this->apiOrderLayer->post($order, Api::ACTION_REFUND);
         } catch(\Exception $e) {
             $this->messageManager->addErrorMessage(
                 __("Riskified API Respond : %1", $e->getMessage())
@@ -33,4 +38,8 @@ public function execute(\Magento\Framework\Event\Observer $observer)
             $this->logger->logException($e);
         }
     }
+    public function saveMemoInRegistry($creditMemo)
+    {
+        $this->registry->register('creditMemo', $creditMemo);
+    }
 }
diff --git a/modman b/modman
new file mode 100644
index 0000000..492574f
--- /dev/null
+++ b/modman
@@ -0,0 +1,3 @@
+# Modman file generated by 'generate-modman'
+app/code/Riskified          app/code/Riskified
+vendor/riskified_php_sdk    vendor/riskified_php_sdk