diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab9d7976..633bdeb2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## Next Release
+## v8.2.0 (2025-06-18)
 
 - Adds the following functions
   - `shipment.createAndBuyLuma`
diff --git a/composer.json b/composer.json
index e1ce70b0..620f0f0d 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "easypost/easypost-php",
   "description": "EasyPost Shipping API Client Library for PHP",
-  "version": "8.1.0",
+  "version": "8.2.0",
   "keywords": [
     "shipping",
     "api",
diff --git a/lib/EasyPost/Constant/Constants.php b/lib/EasyPost/Constant/Constants.php
index a2bed2b9..aae196d6 100644
--- a/lib/EasyPost/Constant/Constants.php
+++ b/lib/EasyPost/Constant/Constants.php
@@ -11,7 +11,7 @@ abstract class Constants
     const BETA_API_VERSION = 'beta';
 
     // Library constants
-    const LIBRARY_VERSION = '8.0.1';
+    const LIBRARY_VERSION = '8.2.0';
     const SUPPORT_EMAIL = 'support@easypost.com';
 
     // Validation
diff --git a/lib/EasyPost/Service/AddressService.php b/lib/EasyPost/Service/AddressService.php
index f089446b..351ddec9 100644
--- a/lib/EasyPost/Service/AddressService.php
+++ b/lib/EasyPost/Service/AddressService.php
@@ -79,11 +79,7 @@ public function create(mixed $params = null): mixed
      */
     public function createAndVerify(mixed $params = null): mixed
     {
-        if (!isset($params['address']) || !is_array($params['address'])) {
-            $clone = $params;
-            unset($params);
-            $params['address'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'address');
 
         $url = self::classUrl(self::serviceModelClassName(self::class));
         $response = Requestor::request($this->client, 'post', $url . '/create_and_verify', $params);
diff --git a/lib/EasyPost/Service/BatchService.php b/lib/EasyPost/Service/BatchService.php
index 7730f133..62f0edbc 100644
--- a/lib/EasyPost/Service/BatchService.php
+++ b/lib/EasyPost/Service/BatchService.php
@@ -40,11 +40,7 @@ public function all(mixed $params = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['batch']) || !is_array($params['batch'])) {
-            $clone = $params;
-            unset($params);
-            $params['batch'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'batch');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/CarrierAccountService.php b/lib/EasyPost/Service/CarrierAccountService.php
index 6483585a..efed6346 100644
--- a/lib/EasyPost/Service/CarrierAccountService.php
+++ b/lib/EasyPost/Service/CarrierAccountService.php
@@ -43,11 +43,7 @@ public function all(mixed $params = null): mixed
      */
     public function update(string $id, mixed $params): mixed
     {
-        if (!isset($params['carrier_account']) || !is_array($params['carrier_account'])) {
-            $clone = $params;
-            unset($params);
-            $params['carrier_account'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'carrier_account');
 
         return self::updateResource(self::serviceModelClassName(self::class), $id, $params);
     }
diff --git a/lib/EasyPost/Service/CustomsInfoService.php b/lib/EasyPost/Service/CustomsInfoService.php
index 11286823..fcd57878 100644
--- a/lib/EasyPost/Service/CustomsInfoService.php
+++ b/lib/EasyPost/Service/CustomsInfoService.php
@@ -2,6 +2,8 @@
 
 namespace EasyPost\Service;
 
+use EasyPost\Util\InternalUtil;
+
 /**
  * CustomsInfo service containing all the logic to make API calls.
  */
@@ -26,11 +28,7 @@ public function retrieve(string $id): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['customs_info']) || !is_array($params['customs_info'])) {
-            $clone = $params;
-            unset($params);
-            $params['customs_info'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'customs_info');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/CustomsItemService.php b/lib/EasyPost/Service/CustomsItemService.php
index cdab8d22..71bb862e 100644
--- a/lib/EasyPost/Service/CustomsItemService.php
+++ b/lib/EasyPost/Service/CustomsItemService.php
@@ -2,6 +2,8 @@
 
 namespace EasyPost\Service;
 
+use EasyPost\Util\InternalUtil;
+
 /**
  * CustomsItem service containing all the logic to make API calls.
  */
@@ -26,11 +28,7 @@ public function retrieve(string $id): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['customs_item']) || !is_array($params['customs_item'])) {
-            $clone = $params;
-            unset($params);
-            $params['customs_item'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'customs_item');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/EndShipperService.php b/lib/EasyPost/Service/EndShipperService.php
index 7f139249..b47e0d19 100644
--- a/lib/EasyPost/Service/EndShipperService.php
+++ b/lib/EasyPost/Service/EndShipperService.php
@@ -2,6 +2,8 @@
 
 namespace EasyPost\Service;
 
+use EasyPost\Util\InternalUtil;
+
 /**
  * EndShipper service containing all the logic to make API calls.
  */
@@ -15,11 +17,7 @@ class EndShipperService extends BaseService
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['address']) || !is_array($params['address'])) {
-            $clone = $params;
-            unset($params);
-            $params['address'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'address');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
@@ -55,11 +53,7 @@ public function all(mixed $params = null): mixed
      */
     public function update(string $id, mixed $params): mixed
     {
-        if (!isset($params['address']) || !is_array($params['address'])) {
-            $clone = $params;
-            unset($params);
-            $params['address'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'address');
 
         return self::updateResource(self::serviceModelClassName(self::class), $id, $params, 'put');
     }
diff --git a/lib/EasyPost/Service/InsuranceService.php b/lib/EasyPost/Service/InsuranceService.php
index 469a09b2..555e8319 100644
--- a/lib/EasyPost/Service/InsuranceService.php
+++ b/lib/EasyPost/Service/InsuranceService.php
@@ -52,11 +52,7 @@ public function getNextPage(mixed $insurances, ?int $pageSize = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['insurance']) || !is_array($params['insurance'])) {
-            $clone = $params;
-            unset($params);
-            $params['insurance'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'insurance');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/LumaService.php b/lib/EasyPost/Service/LumaService.php
index edc51749..0e12fa0c 100644
--- a/lib/EasyPost/Service/LumaService.php
+++ b/lib/EasyPost/Service/LumaService.php
@@ -18,11 +18,7 @@ class LumaService extends BaseService
      */
     public function getPromise(array $params): mixed
     {
-        if (!isset($params['shipment']) || !is_array($params['shipment'])) {
-            $clone = $params;
-            unset($params);
-            $params['shipment'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'shipment');
 
         $url = '/luma/promise';
         $response = Requestor::request($this->client, 'post', $url, $params);
diff --git a/lib/EasyPost/Service/OrderService.php b/lib/EasyPost/Service/OrderService.php
index 1e212306..fb6d92a8 100644
--- a/lib/EasyPost/Service/OrderService.php
+++ b/lib/EasyPost/Service/OrderService.php
@@ -30,11 +30,7 @@ public function retrieve(string $id): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['order']) || !is_array($params['order'])) {
-            $clone = $params;
-            unset($params);
-            $params['order'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'order');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
@@ -63,6 +59,7 @@ public function getRates(string $id, mixed $params = null): mixed
      */
     public function buy(string $id, mixed $params = null): mixed
     {
+        // Don't use InternalUtil::wrapParams here
         if ($params instanceof Rate) {
             $clone = $params;
             unset($params);
diff --git a/lib/EasyPost/Service/ParcelService.php b/lib/EasyPost/Service/ParcelService.php
index 68563331..070a635f 100644
--- a/lib/EasyPost/Service/ParcelService.php
+++ b/lib/EasyPost/Service/ParcelService.php
@@ -2,6 +2,8 @@
 
 namespace EasyPost\Service;
 
+use EasyPost\Util\InternalUtil;
+
 /**
  * Parcel service containing all the logic to make API calls.
  */
@@ -26,11 +28,7 @@ public function retrieve(string $id): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['parcel']) || !is_array($params['parcel'])) {
-            $clone = $params;
-            unset($params);
-            $params['parcel'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'parcel');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/PickupService.php b/lib/EasyPost/Service/PickupService.php
index 5d5415e5..3c91315c 100644
--- a/lib/EasyPost/Service/PickupService.php
+++ b/lib/EasyPost/Service/PickupService.php
@@ -52,11 +52,7 @@ public function getNextPage(mixed $pickups, ?int $pageSize = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['pickup']) || !is_array($params['pickup'])) {
-            $clone = $params;
-            unset($params);
-            $params['pickup'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'pickup');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/ReferralCustomerService.php b/lib/EasyPost/Service/ReferralCustomerService.php
index 56cefdaf..44be0954 100644
--- a/lib/EasyPost/Service/ReferralCustomerService.php
+++ b/lib/EasyPost/Service/ReferralCustomerService.php
@@ -47,11 +47,7 @@ public function getNextPage(mixed $referrals, ?int $pageSize = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['user']) || !is_array($params['user'])) {
-            $clone = $params;
-            unset($params);
-            $params['user'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'user');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/RefundService.php b/lib/EasyPost/Service/RefundService.php
index 419763d2..6f564b79 100644
--- a/lib/EasyPost/Service/RefundService.php
+++ b/lib/EasyPost/Service/RefundService.php
@@ -2,6 +2,8 @@
 
 namespace EasyPost\Service;
 
+use EasyPost\Util\InternalUtil;
+
 /**
  * Refund service containing all the logic to make API calls.
  */
@@ -49,11 +51,7 @@ public function getNextPage(mixed $refunds, ?int $pageSize = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['refund']) || !is_array($params['refund'])) {
-            $clone = $params;
-            unset($params);
-            $params['refund'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'refund');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/ShipmentService.php b/lib/EasyPost/Service/ShipmentService.php
index 08536c41..b1a4a595 100644
--- a/lib/EasyPost/Service/ShipmentService.php
+++ b/lib/EasyPost/Service/ShipmentService.php
@@ -54,11 +54,7 @@ public function getNextPage(mixed $shipments, ?int $pageSize = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['shipment']) || !is_array($params['shipment'])) {
-            $clone = $params;
-            unset($params);
-            $params['shipment'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'shipment');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
@@ -104,6 +100,7 @@ public function getSmartRates(string $id): array
      */
     public function buy(string $id, mixed $params = null, string|bool $endShipperId = false)
     {
+        // Don't use InternalUtil::wrapParams here
         if (isset($params['id']) && (!isset($params['rate']) || !is_array($params['rate']))) {
             $clone = $params;
             unset($params);
@@ -145,6 +142,7 @@ public function refund(string $id, mixed $params = null): mixed
      */
     public function label(string $id, mixed $params = null): mixed
     {
+        // TODO: only accept wrapped params
         if (!isset($params['file_format'])) {
             $clone = $params;
             unset($params);
@@ -166,6 +164,7 @@ public function label(string $id, mixed $params = null): mixed
      */
     public function insure(string $id, mixed $params = null): mixed
     {
+        // TODO: Only accept wrapped params
         if (!isset($params['amount'])) {
             $clone = $params;
             unset($params);
@@ -263,11 +262,7 @@ public function recommendShipDate(string $id, string $desiredDeliveryDate): mixe
      */
     public function createAndBuyLuma(array $params): mixed
     {
-        if (!isset($params['shipment']) || !is_array($params['shipment'])) {
-            $clone = $params;
-            unset($params);
-            $params['shipment'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'shipment');
 
         $url = self::classUrl(self::serviceModelClassName(self::class)) . '/luma';
         $response = Requestor::request($this->client, 'post', $url, $params);
diff --git a/lib/EasyPost/Service/TrackerService.php b/lib/EasyPost/Service/TrackerService.php
index 90f4d1a3..cdd1eba0 100644
--- a/lib/EasyPost/Service/TrackerService.php
+++ b/lib/EasyPost/Service/TrackerService.php
@@ -52,6 +52,7 @@ public function getNextPage(mixed $trackers, ?int $pageSize = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
+        // TODO: only accept wrapped params
         if (!is_array($params)) {
             $clone = $params;
             unset($params);
diff --git a/lib/EasyPost/Service/UserService.php b/lib/EasyPost/Service/UserService.php
index 87a2afb1..a3302ff0 100644
--- a/lib/EasyPost/Service/UserService.php
+++ b/lib/EasyPost/Service/UserService.php
@@ -31,11 +31,7 @@ public function retrieve(string $id): mixed
      */
     public function update(string $id, mixed $params): mixed
     {
-        if (!isset($params['user']) || !is_array($params['user'])) {
-            $clone = $params;
-            unset($params);
-            $params['user'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'user');
 
         return $this->updateResource(self::serviceModelClassName(self::class), $id, $params);
     }
@@ -48,11 +44,7 @@ public function update(string $id, mixed $params): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['user']) || !is_array($params['user'])) {
-            $clone = $params;
-            unset($params);
-            $params['user'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'user');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Service/WebhookService.php b/lib/EasyPost/Service/WebhookService.php
index b84d5faa..a9edc293 100644
--- a/lib/EasyPost/Service/WebhookService.php
+++ b/lib/EasyPost/Service/WebhookService.php
@@ -2,6 +2,8 @@
 
 namespace EasyPost\Service;
 
+use EasyPost\Util\InternalUtil;
+
 /**
  * Webhook service containing all the logic to make API calls.
  */
@@ -61,11 +63,7 @@ public function update(string $id, mixed $params = null): mixed
      */
     public function create(mixed $params = null): mixed
     {
-        if (!isset($params['webhook']) || !is_array($params['webhook'])) {
-            $clone = $params;
-            unset($params);
-            $params['webhook'] = $clone;
-        }
+        $params = InternalUtil::wrapParams($params, 'webhook');
 
         return self::createResource(self::serviceModelClassName(self::class), $params);
     }
diff --git a/lib/EasyPost/Util/InternalUtil.php b/lib/EasyPost/Util/InternalUtil.php
index ac5d8b65..63aaa6c8 100644
--- a/lib/EasyPost/Util/InternalUtil.php
+++ b/lib/EasyPost/Util/InternalUtil.php
@@ -246,4 +246,22 @@ public static function getLowestObjectRate(
 
         return $lowestRate;
     }
+
+    /**
+     * Wraps the params in a key.
+     *
+     * @param mixed $params
+     * @param string $keyName
+     * @return mixed
+     */
+    public static function wrapParams(mixed $params, string $keyName): mixed
+    {
+        if (!isset($params[$keyName]) || !is_array($params[$keyName])) {
+            $clone = $params;
+            unset($params);
+            $params[$keyName] = $clone;
+        }
+
+        return $params;
+    }
 }