diff --git a/example/init_example.php b/example/init_example.php
index 496edfd..238a82a 100644
--- a/example/init_example.php
+++ b/example/init_example.php
@@ -14,7 +14,7 @@
  * @license    https://opensource.org/licenses/MIT  MIT License (MIT)
  */
 
-require(dirname(dirname(__FILE__)) . '/init.php');
+require(dirname(__DIR__) . '/init.php');
 require(dirname(__FILE__) . '/Data.php');
 $config = require(dirname(__FILE__) . '/config.php');
 
diff --git a/init.php b/init.php
index 7956dc2..5de1862 100644
--- a/init.php
+++ b/init.php
@@ -14,9 +14,18 @@
  * @license    https://opensource.org/licenses/MIT  MIT License (MIT)
  */
 
-require(dirname(__FILE__) . '/lib/ApiClient.php');
-require(dirname(__FILE__) . '/lib/Http/CurlClient.php');
-require(dirname(__FILE__) . '/lib/Http/Response.php');
-require(dirname(__FILE__) . '/lib/SignatureVerifier.php');
-require(dirname(__FILE__) . '/lib/Bolt.php');
-require(dirname(__FILE__) . '/lib/Helper.php');
+// Composer autoloader path
+$vendorAutoload = dirname(dirname(__DIR__)) . '/autoload.php';
+
+if (file_exists($vendorAutoload)) {
+    // Load classes via composer autoloader
+    require($vendorAutoload);
+} else {
+    // Preload library classes
+    require(dirname(__FILE__) . '/lib/ApiClient.php');
+    require(dirname(__FILE__) . '/lib/Http/CurlClient.php');
+    require(dirname(__FILE__) . '/lib/Http/Response.php');
+    require(dirname(__FILE__) . '/lib/SignatureVerifier.php');
+    require(dirname(__FILE__) . '/lib/Bolt.php');
+    require(dirname(__FILE__) . '/lib/Helper.php');
+}
diff --git a/lib/playground.php b/lib/playground.php
index 5547436..130a995 100644
--- a/lib/playground.php
+++ b/lib/playground.php
@@ -14,9 +14,7 @@
  * @license    https://opensource.org/licenses/MIT  MIT License (MIT)
  */
 
-require(dirname(__FILE__) . '/ApiClient.php');
-require(dirname(__FILE__) . '/Http/CurlClient.php');
-require(dirname(__FILE__) . '/Http/Response.php');
+require(dirname(__DIR__) . '/init.php');
 
 $client = new \BoltPay\ApiClient([
     'api_key' => 'c117fec29f5c1365dacbc62390b5b6f98c0698a812d7015849319f9f7b863064',