diff --git a/composer.json b/composer.json
index e4787ba..0a60726 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,7 @@
         }
     ],
     "require": {
-        "phpseclib/phpseclib": "~3.0"
+        "phpseclib/phpseclib": "~3.0",
+        "somnambulist/validation": "^1.12"
     }
 }
diff --git a/src/rules.php b/src/rules.php
index 04560f5..727ad18 100644
--- a/src/rules.php
+++ b/src/rules.php
@@ -1,9 +1,25 @@
 <?php
 
-function pixCobrancaImediataRules(array $data){
+use Somnambulist\Components\Validation\Factory;
+
+function pixCobrancaImediataRules(array $data)
+{
     $rules = [
-        'valor' => 'required|integer',
         'expiracao' => 'integer',
-        'devedor' => 'sometimes|string'
+        'devedor' => 'array',
+        'devedor.documento' => 'string|min:11|max:18',
+        'devedor.nome' => 'required_with:devedor.documento|string|max:100',
+        'valor' => 'required|integer|min:1',
+        'chave' => 'required|string',
+        'txid' => 'required|string|max:100',
+        'solicitacaoPagador' => 'string|max:140'
     ];
+    
+    $validation = (new Factory)->validate($data, $rules);
+
+    if ($validation->fails()) {
+        throw new Exception(json_encode($validation->errors()->firstOfAll()), 500);
+    } else {
+        return true;
+    }
 }