diff --git a/callback/zinipay.php b/callback/zinipay.php
new file mode 100644
index 0000000..6645d8e
--- /dev/null
+++ b/callback/zinipay.php
@@ -0,0 +1,35 @@
+<?php
+$request = file_get_contents('php://input');
+$payload = json_decode($request, true) ?: $_POST ?: [];
+
+zinipay_log('Incoming Webhook', $payload);
+
+$settings = function_exists('getPaymentGateway') ? getPaymentGateway('zinipay') : [];
+$invoiceId = $payload['metadata']['invoiceId'] ?? $_REQUEST['invoiceId'] ?? null;
+$transactionId = $payload['transactionId'] ?? $payload['val_id'] ?? null;
+$amount = $payload['amount'] ?? 0;
+
+if ($invoiceId) {
+    $recorded = false;
+    if (function_exists('addPayment')) {
+        @addPayment($invoiceId, $transactionId ?? uniqid('zinipay_'), $amount, 0, 'zinipay');
+        $recorded = true;
+    } elseif (function_exists('invoicePaymentAdd')) {
+        @invoicePaymentAdd($invoiceId, $transactionId ?? uniqid('zinipay_'), $amount, 0, 'zinipay');
+        $recorded = true;
+    }
+    if ($recorded) zinipay_log('Payment Recorded via Webhook', ['invoice'=>$invoiceId,'transaction'=>$transactionId,'amount'=>$amount]);
+}
+
+http_response_code(200);
+echo 'OK';
+exit;
+
+function zinipay_log($title, $data = []) {
+    $logDir = realpath(__DIR__ . '/../../storage/logs') ?: (__DIR__ . '/../../storage/logs');
+    if (!is_dir($logDir)) @mkdir($logDir, 0777, true);
+    $logFile = $logDir . '/gateway_zinipay.log';
+    $time = date("Y-m-d H:i:s");
+    $entry = "[$time] $title\n" . print_r($data,true) . "\n-------------------\n";
+    @file_put_contents($logFile, $entry, FILE_APPEND | LOCK_EX);
+}