diff --git a/src/LaravelBitunixApi.php b/src/LaravelBitunixApi.php
index e895a65..3f47c3f 100644
--- a/src/LaravelBitunixApi.php
+++ b/src/LaravelBitunixApi.php
@@ -18,26 +18,38 @@ use Msr\LaravelBitunixApi\Requests\Header;
 use Msr\LaravelBitunixApi\Requests\PlaceOrderRequestContract;
 use Msr\LaravelBitunixApi\Requests\PlacePositionTpSlOrderRequestContract;
 use Msr\LaravelBitunixApi\Requests\PlaceTpSlOrderRequestContract;
+use Msr\LaravelBitunixApi\Support\BitunixAccountConfig;
 use Psr\Http\Message\ResponseInterface;
 
 class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginModeRequestContract, FlashClosePositionRequestContract, FutureKLineRequestContract, GetHistoryPositionsRequestContract, GetHistoryTradesRequestContract, GetPendingPositionsRequestContract, GetSingleAccountRequestContract, GetTradingPairsRequestContract, PlaceOrderRequestContract, PlacePositionTpSlOrderRequestContract, PlaceTpSlOrderRequestContract
 {
     private Client $publicFutureClient;
 
+    protected BitunixAccountConfig $config;
+
     public function __construct(protected RateLimiter $rateLimiter)
     {
+        $this->config = BitunixAccountConfig::fromConfig();
+
         $this->publicFutureClient = new Client([
-            'base_uri' => config('bitunix-api.future_base_uri').'/api/v1/futures/market/',
+            'base_uri' => ($this->config->baseUrl ?? config('bitunix-api.future_base_uri')).'/api/v1/futures/market/',
         ]);
     }
 
+    public function forAccount(BitunixAccountConfig $config): self
+    {
+        $this->config = $config;
+
+        return $this;
+    }
+
     protected function getPrivateFutureClient(array $queryParams = [], array $body = []): Client
     {
         $bodyString = count($body) ? json_encode($body) : '';
-        $headers = Header::generateHeaders($queryParams, $bodyString);
+        $headers = Header::generateHeaders($queryParams, $bodyString, $this->config);
 
         return new Client([
-            'base_uri' => config('bitunix-api.future_base_uri').'/api/v1/futures/',
+            'base_uri' => ($this->config->baseUrl ?? config('bitunix-api.future_base_uri')).'/api/v1/futures/',
             'headers' => $headers,
         ]);
     }
@@ -409,6 +421,6 @@ class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginMo
 
     protected function resolveRateLimitIdentity(): string
     {
-        return (string) config('bitunix-api.api_key');
+        return (string) ($this->config->accountKey ?? $this->config->apiKey);
     }
 }
diff --git a/src/Requests/Header.php b/src/Requests/Header.php
index 70eea0e..c171466 100644
--- a/src/Requests/Header.php
+++ b/src/Requests/Header.php
@@ -2,6 +2,8 @@
 
 namespace Msr\LaravelBitunixApi\Requests;
 
+use Msr\LaravelBitunixApi\Support\BitunixAccountConfig;
+
 class Header
 {
     /**
@@ -64,13 +66,13 @@ class Header
      * 3. Create digest: SHA256(nonce + timestamp + api-key + queryParams + body)
      * 4. Create sign: SHA256(digest + secretKey)
      */
-    public static function generateSignValue(array $queryParams = [], string $body = '', string $nonce = '', string $timestamp = ''): string
+    public static function generateSignValue(array $queryParams, string $body, string $nonce, string $timestamp, BitunixAccountConfig $config): string
     {
-        $apiKey = config('bitunix-api.api_key');
-        $apiSecret = config('bitunix-api.api_secret');
+        $apiKey = $config->apiKey;
+        $apiSecret = $config->apiSecret;
 
         if (empty($apiKey) || empty($apiSecret)) {
-            throw new \InvalidArgumentException('API key and secret must be configured');
+            throw new \InvalidArgumentException('API key and secret must be provided in config');
         }
 
         // Step 1: Sort query parameters in ascending ASCII order
@@ -97,18 +99,18 @@ class Header
     /**
      * Generate complete headers for authenticated requests
      */
-    public static function generateHeaders(array $queryParams = [], string $body = ''): array
+    public static function generateHeaders(array $queryParams, string $body, BitunixAccountConfig $config): array
     {
         $nonce = self::generateNonce();
         $timestamp = self::generateTimestamp();
-        $sign = self::generateSignValue($queryParams, $body, $nonce, $timestamp);
+        $sign = self::generateSignValue($queryParams, $body, $nonce, $timestamp, $config);
 
         return [
-            'api-key' => config('bitunix-api.api_key'),
+            'api-key' => $config->apiKey,
             'sign' => $sign,
             'nonce' => $nonce,
             'timestamp' => $timestamp,
-            'language' => config('bitunix-api.language', 'en-US'),
+            'language' => $config->language, //config('bitunix-api.language', 'en-US'),
             'Content-Type' => 'application/json',
         ];
     }
diff --git a/src/Support/BitunixAccountConfig.php b/src/Support/BitunixAccountConfig.php
new file mode 100644
index 0000000..2d519ca
--- /dev/null
+++ b/src/Support/BitunixAccountConfig.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace Msr\LaravelBitunixApi\Support;
+
+class BitunixAccountConfig
+
+{
+
+    public function __construct(
+
+        public readonly string $apiKey,
+
+        public readonly string $apiSecret,
+
+        public readonly ?string $accountKey = null,
+
+        public readonly ?string $baseUrl = null,
+
+        public readonly ?string $language = 'en-US',
+
+    ) {
+    }
+
+    public static function fromConfig(): self
+
+    {
+        return new self(
+
+            apiKey: config('bitunix-api.api_key'),
+
+            apiSecret: config('bitunix-api.api_secret'),
+
+            accountKey: config('bitunix-api.account_key', 'default'),
+
+            baseUrl: config('bitunix-api.future_base_uri'),
+
+            language: config('bitunix-api.language', 'en-US'),
+
+        );
+    }
+}