diff --git a/composer.json b/composer.json
index 8009b87d..a3e4f7d9 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
         "roadrunner-php/roadrunner-api-dto": "^1.9.0",
         "roadrunner-php/version-checker": "^1.0",
         "spiral/attributes": "^3.1.6",
-        "spiral/roadrunner": "^2024.1",
+        "spiral/roadrunner": "^2024.3",
         "spiral/roadrunner-cli": "^2.5",
         "spiral/roadrunner-kv": "^4.2",
         "spiral/roadrunner-worker": "^3.5",
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index 9492f410..bf156c41 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -1477,6 +1477,7 @@
       <code><![CDATA[new static(
             $converter ?? DataConverter::createDefault(),
             $rpc ?? Goridge::create(),
+            $credentials ?? ServiceCredentials::create(),
         )]]></code>
     </UnsafeInstantiation>
   </file>
diff --git a/src/Client/GRPC/BaseClient.php b/src/Client/GRPC/BaseClient.php
index aec71544..0bf0223c 100644
--- a/src/Client/GRPC/BaseClient.php
+++ b/src/Client/GRPC/BaseClient.php
@@ -145,6 +145,8 @@ public function withContext(ContextInterface $context): static
      * This will overwrite any "Authorization" header that may be on the context before each request to the
      * Temporal service.
      * You may pass your own {@see \Stringable} implementation to be able to change the key dynamically.
+     *
+     * @link https://docs.temporal.io/cloud/api-keys
      */
     public function withAuthKey(\Stringable|string $key): static
     {
diff --git a/src/Internal/Transport/Router/GetWorkerInfo.php b/src/Internal/Transport/Router/GetWorkerInfo.php
index 8c1e86f8..70925727 100644
--- a/src/Internal/Transport/Router/GetWorkerInfo.php
+++ b/src/Internal/Transport/Router/GetWorkerInfo.php
@@ -18,19 +18,17 @@
 use Temporal\Internal\Declaration\Prototype\WorkflowPrototype;
 use Temporal\Internal\Marshaller\MarshallerInterface;
 use Temporal\Internal\Repository\RepositoryInterface;
+use Temporal\Worker\ServiceCredentials;
 use Temporal\Worker\Transport\Command\ServerRequestInterface;
 use Temporal\Worker\WorkerInterface;
 
 final class GetWorkerInfo extends Route
 {
-    private RepositoryInterface $queues;
-    private MarshallerInterface $marshaller;
-
-    public function __construct(RepositoryInterface $queues, MarshallerInterface $marshaller)
-    {
-        $this->queues = $queues;
-        $this->marshaller = $marshaller;
-    }
+    public function __construct(
+        private readonly RepositoryInterface $queues,
+        private readonly MarshallerInterface $marshaller,
+        private readonly ServiceCredentials $credentials,
+    ) {}
 
     public function handle(ServerRequestInterface $request, array $headers, Deferred $resolver): void
     {
@@ -64,7 +62,7 @@ private function workerToArray(WorkerInterface $worker): array
             // ActivityInfo[]
             'Activities' => $this->map($worker->getActivities(), $activityMap),
             'PhpSdkVersion' => SdkVersion::getSdkVersion(),
-            'Flags' => (object) [],
+            'Flags' => (object) $this->prepareFlags(),
         ];
     }
 
@@ -78,4 +76,14 @@ private function map(iterable $items, \Closure $map): array
 
         return $result;
     }
+
+    /**
+     * @return array<non-empty-string, mixed>
+     */
+    private function prepareFlags(): array
+    {
+        return [
+            'ApiKey' => $this->credentials->apiKey,
+        ];
+    }
 }
diff --git a/src/Worker/ServiceCredentials.php b/src/Worker/ServiceCredentials.php
new file mode 100644
index 00000000..536f72bf
--- /dev/null
+++ b/src/Worker/ServiceCredentials.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Temporal\Worker;
+
+use Temporal\Internal\Traits\CloneWith;
+
+/**
+ * DTO with credential configuration for connecting RoadRunner to the Temporal service.
+ */
+final class ServiceCredentials
+{
+    use CloneWith;
+
+    public readonly string $apiKey;
+
+    private function __construct()
+    {
+        $this->apiKey = '';
+    }
+
+    public static function create(): self
+    {
+        return new self();
+    }
+
+    /**
+     * Set the authentication token for API calls.
+     *
+     * To update the API key in runtime, call the `UpdateAPIKey` RPC method with the new key:
+     *
+     *      $result = \Temporal\Worker\Transport\Goridge::create()->call(
+     *          'temporal.UpdateAPIKey',
+     *          $newApiKey,
+     *      );
+     *
+     * @link https://docs.temporal.io/cloud/api-keys
+     * @since SDK 2.12.0
+     * @since RoadRunner 2024.3.0
+     */
+    public function withApiKey(string $key): static
+    {
+        /** @see self::$apiKey */
+        return $this->with('apiKey', $key);
+    }
+}
diff --git a/src/WorkerFactory.php b/src/WorkerFactory.php
index 43b170dd..b2629dcd 100644
--- a/src/WorkerFactory.php
+++ b/src/WorkerFactory.php
@@ -42,6 +42,7 @@
 use Temporal\Worker\Environment\Environment;
 use Temporal\Worker\Environment\EnvironmentInterface;
 use Temporal\Worker\LoopInterface;
+use Temporal\Worker\ServiceCredentials;
 use Temporal\Worker\Transport\Codec\CodecInterface;
 use Temporal\Worker\Transport\Codec\JsonCodec;
 use Temporal\Worker\Transport\Codec\ProtoCodec;
@@ -74,29 +75,10 @@ class WorkerFactory implements WorkerFactoryInterface, LoopInterface
 {
     use EventEmitterTrait;
 
-    /**
-     * @var string
-     */
     private const ERROR_MESSAGE_TYPE = 'Received message type must be a string, but %s given';
-
-    /**
-     * @var string
-     */
     private const ERROR_HEADERS_TYPE = 'Received headers type must be a string, but %s given';
-
-    /**
-     * @var string
-     */
     private const ERROR_HEADER_NOT_STRING_TYPE = 'Header "%s" argument type must be a string, but %s given';
-
-    /**
-     * @var string
-     */
     private const ERROR_QUEUE_NOT_FOUND = 'Cannot find a worker for task queue "%s"';
-
-    /**
-     * @var string
-     */
     private const HEADER_TASK_QUEUE = 'taskQueue';
 
     protected DataConverterInterface $converter;
@@ -112,7 +94,6 @@ class WorkerFactory implements WorkerFactoryInterface, LoopInterface
     protected ClientInterface $client;
     protected ServerInterface $server;
     protected QueueInterface $responses;
-    protected RPCConnectionInterface $rpc;
 
     /**
      * @var MarshallerInterface<array>
@@ -123,21 +104,22 @@ class WorkerFactory implements WorkerFactoryInterface, LoopInterface
 
     public function __construct(
         DataConverterInterface $dataConverter,
-        RPCConnectionInterface $rpc,
+        protected RPCConnectionInterface $rpc,
+        ServiceCredentials $credentials,
     ) {
         $this->converter = $dataConverter;
-        $this->rpc = $rpc;
-
-        $this->boot();
+        $this->boot($credentials);
     }
 
     public static function create(
         ?DataConverterInterface $converter = null,
         ?RPCConnectionInterface $rpc = null,
+        ?ServiceCredentials $credentials = null,
     ): WorkerFactoryInterface {
         return new static(
             $converter ?? DataConverter::createDefault(),
             $rpc ?? Goridge::create(),
+            $credentials ?? ServiceCredentials::create(),
         );
     }
 
@@ -237,10 +219,10 @@ protected function createTaskQueue(): RepositoryInterface
         return new ArrayRepository();
     }
 
-    protected function createRouter(): RouterInterface
+    protected function createRouter(ServiceCredentials $credentials): RouterInterface
     {
         $router = new Router();
-        $router->add(new Router\GetWorkerInfo($this->queues, $this->marshaller));
+        $router->add(new Router\GetWorkerInfo($this->queues, $this->marshaller, $credentials));
 
         return $router;
     }
@@ -269,12 +251,12 @@ protected function createMarshaller(ReaderInterface $reader): MarshallerInterfac
         return new Marshaller(new AttributeMapperFactory($reader));
     }
 
-    private function boot(): void
+    private function boot(ServiceCredentials $credentials): void
     {
         $this->reader = $this->createReader();
         $this->marshaller = $this->createMarshaller($this->reader);
         $this->queues = $this->createTaskQueue();
-        $this->router = $this->createRouter();
+        $this->router = $this->createRouter($credentials);
         $this->responses = $this->createQueue();
         $this->client = $this->createClient();
         $this->server = $this->createServer();
diff --git a/testing/src/WorkerFactory.php b/testing/src/WorkerFactory.php
index 5def52ef..bef26305 100644
--- a/testing/src/WorkerFactory.php
+++ b/testing/src/WorkerFactory.php
@@ -13,6 +13,7 @@
 use Temporal\Internal\ServiceContainer;
 use Temporal\Worker\ActivityInvocationCache\ActivityInvocationCacheInterface;
 use Temporal\Worker\ActivityInvocationCache\RoadRunnerActivityInvocationCache;
+use Temporal\Worker\ServiceCredentials;
 use Temporal\Worker\Transport\Goridge;
 use Temporal\Worker\Transport\RPCConnectionInterface;
 use Temporal\Worker\Worker;
@@ -27,21 +28,24 @@ public function __construct(
         DataConverterInterface $dataConverter,
         RPCConnectionInterface $rpc,
         ActivityInvocationCacheInterface $activityCache,
+        ServiceCredentials $credentials,
     ) {
         $this->activityCache = $activityCache;
 
-        parent::__construct($dataConverter, $rpc);
+        parent::__construct($dataConverter, $rpc, $credentials);
     }
 
     public static function create(
         ?DataConverterInterface $converter = null,
         ?RPCConnectionInterface $rpc = null,
+        ?ServiceCredentials $credentials = null,
         ?ActivityInvocationCacheInterface $activityCache = null,
     ): static {
         return new static(
             $converter ?? DataConverter::createDefault(),
             $rpc ?? Goridge::create(),
             $activityCache ?? RoadRunnerActivityInvocationCache::create($converter),
+            $credentials ?? ServiceCredentials::create(),
         );
     }
 
diff --git a/tests/Unit/Framework/WorkerFactoryMock.php b/tests/Unit/Framework/WorkerFactoryMock.php
index 9b91b12a..d181f2eb 100644
--- a/tests/Unit/Framework/WorkerFactoryMock.php
+++ b/tests/Unit/Framework/WorkerFactoryMock.php
@@ -33,6 +33,7 @@
 use Temporal\Worker\Environment\Environment;
 use Temporal\Worker\Environment\EnvironmentInterface;
 use Temporal\Worker\LoopInterface;
+use Temporal\Worker\ServiceCredentials;
 use Temporal\Worker\Transport\Codec\CodecInterface;
 use Temporal\Worker\Transport\Command\ServerRequestInterface;
 use Temporal\Worker\Transport\Command\ServerResponseInterface;
@@ -183,7 +184,7 @@ private function createReader(): ReaderInterface
     private function createRouter(): RouterInterface
     {
         $router = new Router();
-        $router->add(new Router\GetWorkerInfo($this->queues, $this->marshaller));
+        $router->add(new Router\GetWorkerInfo($this->queues, $this->marshaller, ServiceCredentials::create()));
 
         return $router;
     }
diff --git a/tests/Unit/Worker/ServiceCredentialsTestCase.php b/tests/Unit/Worker/ServiceCredentialsTestCase.php
new file mode 100644
index 00000000..d817354d
--- /dev/null
+++ b/tests/Unit/Worker/ServiceCredentialsTestCase.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Temporal\Tests\Unit\Worker;
+
+use PHPUnit\Framework\TestCase;
+use Temporal\Worker\ServiceCredentials;
+
+class ServiceCredentialsTestCase extends TestCase
+{
+    public function testWithApiKeyImmutability()
+    {
+        $dto = ServiceCredentials::create();
+
+        $new = $dto->withApiKey('test');
+
+        $this->assertNotSame($dto, $new);
+        $this->assertSame('test', $new->apiKey);
+        $this->assertSame('', $dto->apiKey);
+    }
+}