diff --git a/src/DMarketAuthApi.php b/src/DMarketAuthApi.php
index 07acdda..d586a3d 100644
--- a/src/DMarketAuthApi.php
+++ b/src/DMarketAuthApi.php
@@ -4,6 +4,7 @@
 
 use DMarketAuthApi\Requests\AggregatedPrices;
 use DMarketAuthApi\Requests\BuyOffers;
+use DMarketAuthApi\Requests\ClosedUserOffers;
 use DMarketAuthApi\Requests\ClosedUserTargets;
 use DMarketAuthApi\Requests\CreateUserOffers;
 use DMarketAuthApi\Requests\CreateUserTargets;
@@ -36,6 +37,9 @@ public function __construct($publicKey, $secretKey)
 
 
     //Account
+    /**
+     * @throws \SodiumException
+     */
     public function getUserProfile(array $proxy = [])
     {
         $class = new UserProfile();
@@ -43,6 +47,9 @@ public function getUserProfile(array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getUserBalance(array $proxy = [])
     {
         $class = new UserBalance();
@@ -53,6 +60,9 @@ public function getUserBalance(array $proxy = [])
 
 
     //Sell Items
+    /**
+     * @throws \SodiumException
+     */
     public function depositAssets(array $postParams, array $proxy = [])
     {
         $class = new DepositAssets();
@@ -60,6 +70,9 @@ public function depositAssets(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getDepositStatus(string $depositId, array $proxy = [])
     {
         $class = new DepositStatus($depositId);
@@ -67,6 +80,9 @@ public function getDepositStatus(string $depositId, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getUserOffers(array $queries = [], array $proxy = [])
     {
         $class = new UserOffers($queries);
@@ -74,6 +90,19 @@ public function getUserOffers(array $queries = [], array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
+    public function getClosedUserOffers(array $queries = [], array $proxy = [])
+    {
+        $class = new ClosedUserOffers($queries);
+
+        return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
+    }
+
+    /**
+     * @throws \SodiumException
+     */
     public function createUserOffers(array $postParams, array $proxy = [])
     {
         $class = new CreateUserOffers();
@@ -81,6 +110,9 @@ public function createUserOffers(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function editUserOffers(array $postParams, array $proxy = [])
     {
         $class = new EditUserOffers();
@@ -88,6 +120,9 @@ public function editUserOffers(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getMarketItems(array $queries, array $proxy = [])
     {
         $class = new MarketItems($queries);
@@ -95,6 +130,9 @@ public function getMarketItems(array $queries, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function deleteOffers(array $postParams, array $proxy = [])
     {
         $class = new DeleteOffers();
@@ -105,6 +143,9 @@ public function deleteOffers(array $postParams, array $proxy = [])
 
 
     //Inventory/items
+    /**
+     * @throws \SodiumException
+     */
     public function getUserInventory(array $queries = [], array $proxy = [])
     {
         $class = new UserInventory($queries);
@@ -112,6 +153,9 @@ public function getUserInventory(array $queries = [], array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function syncUserInventory(array $postParams, array $proxy = [])
     {
         $class = new SyncUserInventory();
@@ -119,6 +163,9 @@ public function syncUserInventory(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function withdrawAssets(array $postParams, array $proxy = [])
     {
         $class = new WithdrawAssets();
@@ -126,6 +173,9 @@ public function withdrawAssets(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getUserItems(array $queries, array $proxy = [])
     {
         $class = new UserItems($queries);
@@ -136,6 +186,9 @@ public function getUserItems(array $queries, array $proxy = [])
 
 
     //Buy items
+    /**
+     * @throws \SodiumException
+     */
     public function getOffersByTitle(array $queries, array $proxy = [])
     {
         $class = new OffersByTitle($queries);
@@ -143,6 +196,9 @@ public function getOffersByTitle(array $queries, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getAggregatedPrices(array $queries, array $proxy = [])
     {
         $class = new AggregatedPrices($queries);
@@ -150,6 +206,9 @@ public function getAggregatedPrices(array $queries, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getUserTargets(array $queries = [], array $proxy = [])
     {
         $class = new UserTargets($queries);
@@ -157,6 +216,9 @@ public function getUserTargets(array $queries = [], array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getClosedUserTargets(array $queries = [], array $proxy = [])
     {
         $class = new ClosedUserTargets($queries);
@@ -164,6 +226,9 @@ public function getClosedUserTargets(array $queries = [], array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function createUserTargets(array $postParams, array $proxy = [])
     {
         $class = new CreateUserTargets();
@@ -171,6 +236,9 @@ public function createUserTargets(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function deleteUserTargets(array $postParams, array $proxy = [])
     {
         $class = new DeleteUserTargets();
@@ -178,6 +246,9 @@ public function deleteUserTargets(array $postParams, array $proxy = [])
         return $class->call($this->publicKey, $this->secretKey, $postParams, $proxy)->response();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function buyOffers(array $postParams, array $proxy = [])
     {
         $class = new BuyOffers();
diff --git a/src/Engine/Request.php b/src/Engine/Request.php
index d896967..df6dbfe 100644
--- a/src/Engine/Request.php
+++ b/src/Engine/Request.php
@@ -22,6 +22,9 @@ public function initCurl()
         $this->ch = curl_init();
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function dmarketHttpRequest($publicKey, $secretKey, $postParams = [], $proxy = [])
     {
         if (!isset($this->ch)) {
@@ -63,6 +66,9 @@ public function response($data)
         return new $class($data);
     }
 
+    /**
+     * @throws \SodiumException
+     */
     private function generateSignature($privateKey, $method, $route, $timestamp, array $postParams = []): string
     {
         if (!empty($postParams))
diff --git a/src/Requests/AggregatedPrices.php b/src/Requests/AggregatedPrices.php
index 39f6203..06dbb47 100644
--- a/src/Requests/AggregatedPrices.php
+++ b/src/Requests/AggregatedPrices.php
@@ -24,6 +24,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/BuyOffers.php b/src/Requests/BuyOffers.php
index 9188c14..9fe9480 100644
--- a/src/Requests/BuyOffers.php
+++ b/src/Requests/BuyOffers.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/ClosedUserOffers.php b/src/Requests/ClosedUserOffers.php
new file mode 100644
index 0000000..114faf3
--- /dev/null
+++ b/src/Requests/ClosedUserOffers.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace DMarketAuthApi\Requests;
+
+use DMarketAuthApi\Engine\Request;
+use DMarketAuthApi\Interfaces\RequestInterface;
+
+class ClosedUserOffers extends Request implements RequestInterface
+{
+    const URL = "/marketplace-api/v1/user-offers/closed";
+
+    private string $method = 'GET';
+    private string $queryPath = '';
+
+    public function __construct($queries)
+    {
+        $this->queryPath = http_build_query($queries);
+    }
+
+    public function getUrl(): string
+    {
+        return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
+    }
+
+    /**
+     * @throws \SodiumException
+     */
+    public function call(string $publicKey, string $secretKey, array $proxy = [])
+    {
+        return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
+    }
+
+    public function getRequestMethod(): string
+    {
+        return $this->method;
+    }
+
+    public function getRootUrl(): string
+    {
+        return "https://api.dmarket.com";
+    }
+}
\ No newline at end of file
diff --git a/src/Requests/ClosedUserTargets.php b/src/Requests/ClosedUserTargets.php
index e731e45..aedf2de 100644
--- a/src/Requests/ClosedUserTargets.php
+++ b/src/Requests/ClosedUserTargets.php
@@ -22,6 +22,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/CreateUserOffers.php b/src/Requests/CreateUserOffers.php
index a73cd39..8b73e3c 100644
--- a/src/Requests/CreateUserOffers.php
+++ b/src/Requests/CreateUserOffers.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/CreateUserTargets.php b/src/Requests/CreateUserTargets.php
index 9389338..02b92b9 100644
--- a/src/Requests/CreateUserTargets.php
+++ b/src/Requests/CreateUserTargets.php
@@ -18,6 +18,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/DeleteOffers.php b/src/Requests/DeleteOffers.php
index 468ff27..109ac4b 100644
--- a/src/Requests/DeleteOffers.php
+++ b/src/Requests/DeleteOffers.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/DeleteUserTargets.php b/src/Requests/DeleteUserTargets.php
index a8fa570..1a13290 100644
--- a/src/Requests/DeleteUserTargets.php
+++ b/src/Requests/DeleteUserTargets.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/DepositAssets.php b/src/Requests/DepositAssets.php
index 424bb45..0b13264 100644
--- a/src/Requests/DepositAssets.php
+++ b/src/Requests/DepositAssets.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/DepositStatus.php b/src/Requests/DepositStatus.php
index 4f51a1a..d142270 100644
--- a/src/Requests/DepositStatus.php
+++ b/src/Requests/DepositStatus.php
@@ -22,6 +22,9 @@ public function getUrl(): string
         return self::URL . $this->depositId;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/EditUserOffers.php b/src/Requests/EditUserOffers.php
index 37b58f2..4db0d66 100644
--- a/src/Requests/EditUserOffers.php
+++ b/src/Requests/EditUserOffers.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/MarketItems.php b/src/Requests/MarketItems.php
index c60f92f..1314a39 100644
--- a/src/Requests/MarketItems.php
+++ b/src/Requests/MarketItems.php
@@ -22,6 +22,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/OffersByTitle.php b/src/Requests/OffersByTitle.php
index 68f8784..ae530d0 100644
--- a/src/Requests/OffersByTitle.php
+++ b/src/Requests/OffersByTitle.php
@@ -22,6 +22,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/SyncUserInventory.php b/src/Requests/SyncUserInventory.php
index 9942112..1ea5486 100644
--- a/src/Requests/SyncUserInventory.php
+++ b/src/Requests/SyncUserInventory.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Requests/UserBalance.php b/src/Requests/UserBalance.php
index 8b2764f..f6685e8 100644
--- a/src/Requests/UserBalance.php
+++ b/src/Requests/UserBalance.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/UserInventory.php b/src/Requests/UserInventory.php
index 412e695..b0702b0 100644
--- a/src/Requests/UserInventory.php
+++ b/src/Requests/UserInventory.php
@@ -22,6 +22,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/UserItems.php b/src/Requests/UserItems.php
index 2899803..2c930f3 100644
--- a/src/Requests/UserItems.php
+++ b/src/Requests/UserItems.php
@@ -22,6 +22,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/UserOffers.php b/src/Requests/UserOffers.php
index eea741c..97559f2 100644
--- a/src/Requests/UserOffers.php
+++ b/src/Requests/UserOffers.php
@@ -24,6 +24,9 @@ public function getUrl(): string
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/UserProfile.php b/src/Requests/UserProfile.php
index 0b744bc..799532f 100644
--- a/src/Requests/UserProfile.php
+++ b/src/Requests/UserProfile.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, [], $proxy);
diff --git a/src/Requests/UserTargets.php b/src/Requests/UserTargets.php
index 4cd5374..2420ef9 100644
--- a/src/Requests/UserTargets.php
+++ b/src/Requests/UserTargets.php
@@ -19,6 +19,9 @@ public function __construct($queries)
         $this->queryPath = http_build_query($queries);
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function getUrl(): string
     {
         return self::URL . (!empty($this->queryPath) ? '?' . $this->queryPath : '');
diff --git a/src/Requests/WithdrawAssets.php b/src/Requests/WithdrawAssets.php
index fb7c0bc..324f6b7 100644
--- a/src/Requests/WithdrawAssets.php
+++ b/src/Requests/WithdrawAssets.php
@@ -16,6 +16,9 @@ public function getUrl(): string
         return self::URL;
     }
 
+    /**
+     * @throws \SodiumException
+     */
     public function call(string $publicKey, string $secretKey, array $postParams = [], array $proxy = [])
     {
         return $this->dmarketHttpRequest($publicKey, $secretKey, $postParams, $proxy);
diff --git a/src/Responses/ClosedUserOffers.php b/src/Responses/ClosedUserOffers.php
new file mode 100644
index 0000000..38e3df0
--- /dev/null
+++ b/src/Responses/ClosedUserOffers.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace DMarketAuthApi\Responses;
+
+use DMarketAuthApi\Interfaces\ResponseInterface;
+
+class ClosedUserOffers implements ResponseInterface
+{
+    private $data;
+
+    public function __construct($response)
+    {
+        $this->data = $this->decodeResponse($response);
+    }
+
+    public function response()
+    {
+        return $this->data;
+    }
+
+    private function decodeResponse($response)
+    {
+        return json_decode($response, true);
+    }
+}
\ No newline at end of file