diff --git a/src/ApiFactory.php b/src/ApiFactory.php
index e8cf9e9..106164c 100644
--- a/src/ApiFactory.php
+++ b/src/ApiFactory.php
@@ -223,6 +223,11 @@ public function createService(Api $api, $serviceName)
             $op->setHttpMethod($httpMethod);
 
             if ($isRest) {
+                $identifier = isset($docsArray[$serviceClassName]['collection'][$httpMethod]['identifier'])
+                    ? $docsArray[$serviceClassName]['collection'][$httpMethod]['identifier']
+                    : '';
+                $op->setIdentifier($identifier);
+
                 $description = isset($docsArray[$serviceClassName]['collection'][$httpMethod]['description'])
                     ? $docsArray[$serviceClassName]['collection'][$httpMethod]['description']
                     : '';
@@ -253,6 +258,11 @@ public function createService(Api $api, $serviceName)
             }
 
             if ($isRpc) {
+                $identifier = isset($docsArray[$serviceClassName][$httpMethod]['identifier'])
+                    ? $docsArray[$serviceClassName][$httpMethod]['identifier']
+                    : '';
+                $op->setIdentifier($identifier);
+
                 $description = isset($docsArray[$serviceClassName][$httpMethod]['description'])
                     ? $docsArray[$serviceClassName][$httpMethod]['description']
                     : '';
@@ -293,6 +303,11 @@ public function createService(Api $api, $serviceName)
                 $op = new Operation();
                 $op->setHttpMethod($httpMethod);
 
+                $identifier = isset($docsArray[$serviceClassName]['entity'][$httpMethod]['identifier'])
+                    ? $docsArray[$serviceClassName]['entity'][$httpMethod]['identifier']
+                    : '';
+                $op->setIdentifier($identifier);
+
                 $description = isset($docsArray[$serviceClassName]['entity'][$httpMethod]['description'])
                     ? $docsArray[$serviceClassName]['entity'][$httpMethod]['description']
                     : '';
diff --git a/src/Operation.php b/src/Operation.php
index 2b0b03a..30b6443 100644
--- a/src/Operation.php
+++ b/src/Operation.php
@@ -16,6 +16,11 @@ class Operation implements IteratorAggregate
      */
     protected $httpMethod;
 
+    /**
+     * @var string
+     */
+    protected $identifier;
+
     /**
      * @var string
      */
@@ -61,6 +66,22 @@ public function getHttpMethod()
         return $this->httpMethod;
     }
 
+    /**
+     * @param string $identifier
+     */
+    public function setIdentifier($identifier)
+    {
+        $this->identifier = $identifier;
+    }
+
+    /**
+     * @return string
+     */
+    public function getIdentifier()
+    {
+        return $this->identifier;
+    }
+
     /**
      * @param string $description
      */
@@ -149,6 +170,7 @@ public function getResponseStatusCodes()
     public function toArray()
     {
         return [
+            'identifier' => $this->identifier,
             'description' => $this->description,
             'request' => $this->requestDescription,
             'requires_authorization' => $this->requiresAuthorization,