diff --git a/src/Kernel/Contracts/JsApiTicket.php b/src/Kernel/Contracts/JsApiTicket.php
new file mode 100644
index 000000000..27616d207
--- /dev/null
+++ b/src/Kernel/Contracts/JsApiTicket.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace EasyWeChat\Kernel\Contracts;
+
+interface JsApiTicket
+{
+    public function getTicket(): string;
+
+    /**
+     * @return array<string,mixed>
+     */
+    public function configSignature(string $url, string $nonce, int $timestamp): array;
+}
diff --git a/src/OfficialAccount/Application.php b/src/OfficialAccount/Application.php
index 33b57bb24..959e8f3e3 100644
--- a/src/OfficialAccount/Application.php
+++ b/src/OfficialAccount/Application.php
@@ -7,6 +7,7 @@
 use function array_merge;
 use function call_user_func;
 use EasyWeChat\Kernel\Contracts\AccessToken as AccessTokenInterface;
+use EasyWeChat\Kernel\Contracts\JsApiTicket as JsApiTicketInterface;
 use EasyWeChat\Kernel\Contracts\RefreshableAccessToken as RefreshableAccessTokenInterface;
 use EasyWeChat\Kernel\Contracts\Server as ServerInterface;
 use EasyWeChat\Kernel\Encryptor;
@@ -184,7 +185,7 @@ public function getOAuth(): SocialiteProviderInterface
         return $provider;
     }
 
-    public function getTicket(): JsApiTicket
+    public function getTicket(): JsApiTicketInterface
     {
         if (! $this->ticket) {
             $this->ticket = new JsApiTicket(
@@ -198,7 +199,7 @@ public function getTicket(): JsApiTicket
         return $this->ticket;
     }
 
-    public function setTicket(JsApiTicket $ticket): static
+    public function setTicket(JsApiTicketInterface $ticket): static
     {
         $this->ticket = $ticket;
 
diff --git a/src/OfficialAccount/JsApiTicket.php b/src/OfficialAccount/JsApiTicket.php
index 943b28aea..3a5de5235 100644
--- a/src/OfficialAccount/JsApiTicket.php
+++ b/src/OfficialAccount/JsApiTicket.php
@@ -4,11 +4,12 @@
 
 namespace EasyWeChat\OfficialAccount;
 
+use EasyWeChat\Kernel\Contracts\JsApiTicket as JsApiTicketInterface;
 use EasyWeChat\Kernel\Exceptions\HttpException;
 use JetBrains\PhpStorm\ArrayShape;
 use function sprintf;
 
-class JsApiTicket extends AccessToken
+class JsApiTicket extends AccessToken implements JsApiTicketInterface
 {
     /**
      * @throws \Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface