diff --git a/Makefile b/Makefile
index 59afe2e..a0102f3 100644
--- a/Makefile
+++ b/Makefile
@@ -103,7 +103,7 @@ phpstan: var vendor ## Analyze code using PHPStan
 	$(RUN) phpstan analyze --memory-limit=1G $(ARGS)
 .PHONY: phpstan
 
-test: var vendor ## Run tests using PHPUnit
+test: var vendor compile-test-stub ## Run tests using PHPUnit
 	$(RUN) vendor/bin/phpunit $(ARGS) --colors
 .PHONY: test
 
@@ -130,12 +130,12 @@ composer-normalize-check: ## Check that composer.json is normalized
 fix: fixer rector composer-normalize ## Run all fixing recipes
 .PHONY: fix
 
-check: fixer-check rector-check composer-validate composer-normalize-check deps-analyze phpstan compile-test-stub test  ## Run all project checks
+check: fixer-check rector-check composer-validate composer-normalize-check deps-analyze phpstan test  ## Run all project checks
 .PHONY: check
 
 compile-test-stub:
 	docker run --rm \
-	    --user 1000:1000 \
+	    --user $(CONTAINER_USER) \
         -v $(PWD):/workspace \
         -w /workspace \
         ghcr.io/thesis-php/protoc-plugin:latest \
diff --git a/composer.json b/composer.json
index d4e0087..b1fdb29 100644
--- a/composer.json
+++ b/composer.json
@@ -30,15 +30,16 @@
         "psr/log": "^3.0",
         "revolt/event-loop": "1.0.8",
         "thesis/endian": "^0.3.0",
-        "thesis/googleapis-rpc-types": "^0.1.2",
+        "thesis/googleapis-rpc-types": "^0.1.6",
         "thesis/package-version": "^0.1.2",
-        "thesis/protobuf": "^0.1.5",
-        "thesis/protobuf-known-types": "^0.1.2"
+        "thesis/protobuf": "^0.1.8",
+        "thesis/protobuf-known-types": "^0.1.5"
     },
     "require-dev": {
         "ext-bcmath": "*",
         "phpunit/phpunit": "^12.4",
-        "symfony/var-dumper": "^8.0"
+        "symfony/var-dumper": "^8.0",
+        "thesis/protoregistry": "^0.1.2"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Server.php b/src/Server.php
index 9419205..d2b3772 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -10,7 +10,7 @@
 /**
  * @api
  */
-interface Server
+interface Server extends ServiceRegistrar
 {
     /**
      * The server can subscribe to the {@see Cancellation} to stop automatically when it is triggered, for example on a signal.
diff --git a/src/Server/Builder.php b/src/Server/Builder.php
index 8d91179..0fd2935 100644
--- a/src/Server/Builder.php
+++ b/src/Server/Builder.php
@@ -373,17 +373,20 @@ public function build(): Server
             $server->expose($address, $bindContext);
         }
 
-        return new Internal\AmphpHttpServer(
+        $grpc = new Internal\AmphpHttpServer(
             server: $server,
             requestHandler: new ServerRequestHandler(
                 encoderFactory: new MessageEncoderFactory(array_values($this->encoders)),
                 compressorFactory: new MessageCompressorFactory($compressors),
                 protobuf: $this->protobuf ?? Protobuf\Encoder\Builder::buildDefault(),
-                services: $this->services,
                 interceptors: $this->interceptors,
             ),
             errorHandler: new ServerErrorHandler(),
         );
+
+        $grpc->register(...$this->services);
+
+        return $grpc;
     }
 
     /**
diff --git a/src/Server/Internal/AmphpHttpServer.php b/src/Server/Internal/AmphpHttpServer.php
index 9a33d7f..8741d8b 100644
--- a/src/Server/Internal/AmphpHttpServer.php
+++ b/src/Server/Internal/AmphpHttpServer.php
@@ -10,6 +10,7 @@
 use Amp\NullCancellation;
 use Revolt\EventLoop;
 use Thesis\Grpc\Server;
+use Thesis\Grpc\Server\Service;
 use function Amp\async;
 
 /**
@@ -68,4 +69,20 @@ public function __destruct()
     {
         $this->stop();
     }
+
+    #[\Override]
+    public function register(Service ...$services): void
+    {
+        if ($this->state === HttpServerState::Serve) {
+            throw new Server\ServerRunning();
+        }
+
+        $this->requestHandler->register(...$services);
+    }
+
+    #[\Override]
+    public function services(): array
+    {
+        return $this->requestHandler->services();
+    }
 }
diff --git a/src/Server/Internal/Http2/Router.php b/src/Server/Internal/Http2/Router.php
index 47fb3d4..bb2600d 100644
--- a/src/Server/Internal/Http2/Router.php
+++ b/src/Server/Internal/Http2/Router.php
@@ -11,26 +11,25 @@
 
 /**
  * @internal
+ * @template-implements \IteratorAggregate<array-key, Service>
  */
-final readonly class Router
+final class Router implements \IteratorAggregate
 {
     /** @var array<non-empty-string, non-empty-array<non-empty-string, Rpc>> */
-    private array $services;
+    private array $index = [];
 
-    /**
-     * @param list<Service> $services
-     */
-    public function __construct(array $services)
+    /** @var list<Service> */
+    private array $services = [];
+
+    public function addService(Service $service): void
     {
-        $this->services = array_combine(
-            array_map(static fn(Service $service) => $service->name, $services),
+        $this->services[] = $service;
+        $this->index[$service->name] = array_combine(
             array_map(
-                static fn(Service $service) => array_combine(
-                    array_map(static fn(Rpc $rpc) => $rpc->handle->method, $service->handlers),
-                    $service->handlers,
-                ),
-                $services,
+                static fn(Rpc $rpc) => $rpc->handle->method,
+                $service->handlers,
             ),
+            $service->handlers,
         );
     }
 
@@ -47,8 +46,14 @@ public function route(Request $request): Rpc
 
         $endpoint = Endpoint::parse($path);
 
-        $rpc = $this->services[$endpoint->service] ?? throw new InvalidRpcMethod("Unknown service {$endpoint->service}");
+        $rpc = $this->index[$endpoint->service] ?? throw new InvalidRpcMethod("Unknown service {$endpoint->service}");
 
         return $rpc[$endpoint->method] ?? throw new InvalidRpcMethod("Unknown method {$endpoint->method} for service {$endpoint->service}");
     }
+
+    #[\Override]
+    public function getIterator(): \Traversable
+    {
+        yield from $this->services;
+    }
 }
diff --git a/src/Server/Internal/Http2/ServerRequestHandler.php b/src/Server/Internal/Http2/ServerRequestHandler.php
index 5287cb3..b9e40a8 100644
--- a/src/Server/Internal/Http2/ServerRequestHandler.php
+++ b/src/Server/Internal/Http2/ServerRequestHandler.php
@@ -22,6 +22,7 @@
 use Thesis\Grpc\Server\Service;
 use Thesis\Grpc\Server\StreamInfo;
 use Thesis\Grpc\ServerStream;
+use Thesis\Grpc\ServiceRegistrar;
 use Thesis\Grpc\UnimplementedException;
 use Thesis\Protobuf;
 use function Amp\async;
@@ -30,7 +31,9 @@
  * @internal
  * @phpstan-type HandlerEntry = object{future: Future<void>, cancellation: DeferredCancellation}
  */
-final class ServerRequestHandler implements RequestHandler
+final class ServerRequestHandler implements
+    RequestHandler,
+    ServiceRegistrar
 {
     private readonly Router $router;
 
@@ -40,24 +43,34 @@ final class ServerRequestHandler implements RequestHandler
     private \WeakMap $pending;
 
     /**
-     * @param list<Service> $services
      * @param list<Interceptor> $interceptors
      */
     public function __construct(
         private readonly MessageEncoderFactory $encoderFactory,
         private readonly MessageCompressorFactory $compressorFactory,
         Protobuf\Encoder $protobuf,
-        array $services,
         array $interceptors,
     ) {
         $this->pending = new \WeakMap();
-        $this->router = new Router($services);
+        $this->router = new Router();
         $this->interceptor = new InterceptorComposer([
             new StreamHandleInterceptor($protobuf),
             ...$interceptors,
         ]);
     }
 
+    #[\Override]
+    public function register(Service ...$services): void
+    {
+        array_walk($services, $this->router->addService(...));
+    }
+
+    #[\Override]
+    public function services(): array
+    {
+        return iterator_to_array($this->router, preserve_keys: false);
+    }
+
     #[\Override]
     public function handleRequest(Request $request): Response
     {
diff --git a/src/Server/ServerRunning.php b/src/Server/ServerRunning.php
new file mode 100644
index 0000000..c3692fe
--- /dev/null
+++ b/src/Server/ServerRunning.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Thesis\Grpc\Server;
+
+use Thesis\Grpc\GrpcException;
+
+/**
+ * @api
+ */
+final class ServerRunning extends GrpcException {}
diff --git a/src/ServiceRegistrar.php b/src/ServiceRegistrar.php
new file mode 100644
index 0000000..839ab9c
--- /dev/null
+++ b/src/ServiceRegistrar.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Thesis\Grpc;
+
+use Thesis\Grpc\Server\ServerRunning;
+use Thesis\Grpc\Server\Service;
+
+/**
+ * @api
+ */
+interface ServiceRegistrar
+{
+    /**
+     * @throws ServerRunning
+     */
+    public function register(Service ...$services): void;
+
+    /**
+     * @return list<Service>
+     */
+    public function services(): array;
+}
diff --git a/tests/ServerTest.php b/tests/ServerTest.php
new file mode 100644
index 0000000..9a41096
--- /dev/null
+++ b/tests/ServerTest.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Thesis\Grpc;
+
+use Amp\Cancellation;
+use Echos\Api\V1\EchoRequest;
+use Echos\Api\V1\EchoResponse;
+use Echos\Api\V1\EchoServiceClient;
+use Echos\Api\V1\EchoServiceServer;
+use Echos\Api\V1\EchoServiceServerRegistry;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+use Thesis\Grpc\Server\Internal\AmphpHttpServer;
+use Thesis\Grpc\Server\ServerRunning;
+
+#[CoversClass(AmphpHttpServer::class)]
+final class ServerTest extends TestCase
+{
+    public function testRegisterService(): void
+    {
+        $server = new Server\Builder()->build();
+        $server->register(...new EchoServiceServerRegistry(new class implements EchoServiceServer {
+            #[\Override]
+            public function echo(EchoRequest $request, Metadata $md, Cancellation $cancellation): EchoResponse
+            {
+                return new EchoResponse($request->sentence);
+            }
+        })->services());
+
+        $server->start();
+        $client = new EchoServiceClient(new Client\Builder()->build());
+        self::assertSame('Hello, gRPC', $client->echo(new EchoRequest('Hello, gRPC'))->sentence);
+        $server->stop();
+    }
+
+    public function testRegisterServiceInRunningServer(): void
+    {
+        $server = new Server\Builder()->build();
+        $server->start();
+        $this->expectExceptionObject(new ServerRunning());
+        $server->register(...new EchoServiceServerRegistry(new class implements EchoServiceServer {
+            #[\Override]
+            public function echo(EchoRequest $request, Metadata $md, Cancellation $cancellation): EchoResponse
+            {
+                return new EchoResponse($request->sentence);
+            }
+        })->services());
+    }
+}
diff --git a/tests/genproto/Chat/Api/V1/Message.php b/tests/genproto/Chat/Api/V1/Message.php
index cbb04e1..01a28c2 100644
--- a/tests/genproto/Chat/Api/V1/Message.php
+++ b/tests/genproto/Chat/Api/V1/Message.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/chat_v1.proto
  */
diff --git a/tests/genproto/Chat/Api/V1/MessengerServiceClient.php b/tests/genproto/Chat/Api/V1/MessengerServiceClient.php
index d081cbf..2a92a18 100644
--- a/tests/genproto/Chat/Api/V1/MessengerServiceClient.php
+++ b/tests/genproto/Chat/Api/V1/MessengerServiceClient.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/chat_v1.proto
  */
diff --git a/tests/genproto/Chat/Api/V1/MessengerServiceServer.php b/tests/genproto/Chat/Api/V1/MessengerServiceServer.php
index b6bb838..18e8ae1 100644
--- a/tests/genproto/Chat/Api/V1/MessengerServiceServer.php
+++ b/tests/genproto/Chat/Api/V1/MessengerServiceServer.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/chat_v1.proto
  */
diff --git a/tests/genproto/Chat/Api/V1/MessengerServiceServerRegistry.php b/tests/genproto/Chat/Api/V1/MessengerServiceServerRegistry.php
index ba7ef14..4ccb45a 100644
--- a/tests/genproto/Chat/Api/V1/MessengerServiceServerRegistry.php
+++ b/tests/genproto/Chat/Api/V1/MessengerServiceServerRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/chat_v1.proto
  */
diff --git a/tests/genproto/Chat/Api/V1/TestsProtosChatV1DescriptorRegistry.php b/tests/genproto/Chat/Api/V1/TestsProtosChatV1DescriptorRegistry.php
index f4ef34f..4dbdc58 100644
--- a/tests/genproto/Chat/Api/V1/TestsProtosChatV1DescriptorRegistry.php
+++ b/tests/genproto/Chat/Api/V1/TestsProtosChatV1DescriptorRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/chat_v1.proto
  */
@@ -13,20 +13,32 @@
 namespace Chat\Api\V1;
 
 use Override;
-use Thesis\Protobuf\Pool;
+use Thesis\Protobuf\Registry;
+use Thesis\Protobuf\Registry\File;
 
 /**
  * @api
  */
-final readonly class TestsProtosChatV1DescriptorRegistry implements Pool\Registrar
+final readonly class TestsProtosChatV1DescriptorRegistry implements Registry\Registrar
 {
     private const string DESCRIPTOR_BUFFER = 'Chp0ZXN0cy9wcm90b3MvY2hhdF92MS5wcm90bxILY2hhdC5hcGkudjEiHQoHTWVzc2FnZRISCgR0ZXh0GAEgASgJUgR0ZXh0MkoKEE1lc3NlbmdlclNlcnZpY2USNgoEQ2hhdBIULmNoYXQuYXBpLnYxLk1lc3NhZ2UaFC5jaGF0LmFwaS52MS5NZXNzYWdlKAEwAUrWAQoGEgQAAAoBCggKAQwSAwAAEgoICgECEgMCABQKCgoCBAASBAQABgEKCgoDBAABEgMECA8KCwoEBAACABIDBQQUCgwKBQQAAgAFEgMFBAoKDAoFBAACAAESAwULDwoMCgUEAAIAAxIDBRITCgoKAgYAEgQIAAoBCgoKAwYAARIDCAgYCgsKBAYAAgASAwkENgoMCgUGAAIAARIDCQgMCgwKBQYAAgAFEgMJDRMKDAoFBgACAAISAwkUGwoMCgUGAAIABhIDCSYsCgwKBQYAAgADEgMJLTRiBnByb3RvMw==';
 
     #[Override]
-    public function register(Pool\Registry $pool): void
+    public function register(Registry\Pool $pool): void
     {
-        $pool->add(Pool\Descriptor::base64(self::DESCRIPTOR_BUFFER), [
-            'chat.api.v1.Message' => new Pool\MessageMetadata(\Chat\Api\V1\Message::class),
-        ]);
+        $pool->add(Registry\Descriptor::base64(self::DESCRIPTOR_BUFFER), new File(
+            name: 'tests/protos/chat_v1.proto',
+            messages: [
+                new File\MessageDescriptor('chat.api.v1.Message', \Chat\Api\V1\Message::class),
+            ],
+            services: [
+                new File\ServiceDescriptor(
+                    name: 'chat.api.v1.MessengerService',
+                    methods: [
+                        new File\MethodDescriptor('Chat', true, true),
+                    ],
+                ),
+            ],
+        ));
     }
 }
diff --git a/tests/genproto/Chat/Api/V1/autoload.metadata.php b/tests/genproto/Chat/Api/V1/autoload.metadata.php
index 6e7f0a8..b6d0151 100644
--- a/tests/genproto/Chat/Api/V1/autoload.metadata.php
+++ b/tests/genproto/Chat/Api/V1/autoload.metadata.php
@@ -3,12 +3,12 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  */
 
 declare(strict_types=1);
 
-\Thesis\Protobuf\Pool\Registry::get()->register(
-    new \Thesis\Protobuf\Pool\OnceRegistrar(new \Chat\Api\V1\TestsProtosChatV1DescriptorRegistry()),
+\Thesis\Protobuf\Registry\Pool::get()->register(
+    new \Thesis\Protobuf\Registry\OnceRegistrar(new \Chat\Api\V1\TestsProtosChatV1DescriptorRegistry()),
 );
diff --git a/tests/genproto/Echos/Api/V1/EchoRequest.php b/tests/genproto/Echos/Api/V1/EchoRequest.php
index f1479aa..16fda2a 100644
--- a/tests/genproto/Echos/Api/V1/EchoRequest.php
+++ b/tests/genproto/Echos/Api/V1/EchoRequest.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/echo_v1.proto
  */
diff --git a/tests/genproto/Echos/Api/V1/EchoResponse.php b/tests/genproto/Echos/Api/V1/EchoResponse.php
index ff07b99..33018b2 100644
--- a/tests/genproto/Echos/Api/V1/EchoResponse.php
+++ b/tests/genproto/Echos/Api/V1/EchoResponse.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/echo_v1.proto
  */
diff --git a/tests/genproto/Echos/Api/V1/EchoServiceClient.php b/tests/genproto/Echos/Api/V1/EchoServiceClient.php
index 16d0b30..d877423 100644
--- a/tests/genproto/Echos/Api/V1/EchoServiceClient.php
+++ b/tests/genproto/Echos/Api/V1/EchoServiceClient.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/echo_v1.proto
  */
diff --git a/tests/genproto/Echos/Api/V1/EchoServiceServer.php b/tests/genproto/Echos/Api/V1/EchoServiceServer.php
index 3c68871..9883d2a 100644
--- a/tests/genproto/Echos/Api/V1/EchoServiceServer.php
+++ b/tests/genproto/Echos/Api/V1/EchoServiceServer.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/echo_v1.proto
  */
diff --git a/tests/genproto/Echos/Api/V1/EchoServiceServerRegistry.php b/tests/genproto/Echos/Api/V1/EchoServiceServerRegistry.php
index 6a39a0f..f3756d5 100644
--- a/tests/genproto/Echos/Api/V1/EchoServiceServerRegistry.php
+++ b/tests/genproto/Echos/Api/V1/EchoServiceServerRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/echo_v1.proto
  */
diff --git a/tests/genproto/Echos/Api/V1/TestsProtosEchoV1DescriptorRegistry.php b/tests/genproto/Echos/Api/V1/TestsProtosEchoV1DescriptorRegistry.php
index 44d8c3a..7c80a9e 100644
--- a/tests/genproto/Echos/Api/V1/TestsProtosEchoV1DescriptorRegistry.php
+++ b/tests/genproto/Echos/Api/V1/TestsProtosEchoV1DescriptorRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/echo_v1.proto
  */
@@ -13,21 +13,33 @@
 namespace Echos\Api\V1;
 
 use Override;
-use Thesis\Protobuf\Pool;
+use Thesis\Protobuf\Registry;
+use Thesis\Protobuf\Registry\File;
 
 /**
  * @api
  */
-final readonly class TestsProtosEchoV1DescriptorRegistry implements Pool\Registrar
+final readonly class TestsProtosEchoV1DescriptorRegistry implements Registry\Registrar
 {
     private const string DESCRIPTOR_BUFFER = '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';
 
     #[Override]
-    public function register(Pool\Registry $pool): void
+    public function register(Registry\Pool $pool): void
     {
-        $pool->add(Pool\Descriptor::base64(self::DESCRIPTOR_BUFFER), [
-            'echos.api.v1.EchoRequest' => new Pool\MessageMetadata(\Echos\Api\V1\EchoRequest::class),
-            'echos.api.v1.EchoResponse' => new Pool\MessageMetadata(\Echos\Api\V1\EchoResponse::class),
-        ]);
+        $pool->add(Registry\Descriptor::base64(self::DESCRIPTOR_BUFFER), new File(
+            name: 'tests/protos/echo_v1.proto',
+            messages: [
+                new File\MessageDescriptor('echos.api.v1.EchoRequest', \Echos\Api\V1\EchoRequest::class),
+                new File\MessageDescriptor('echos.api.v1.EchoResponse', \Echos\Api\V1\EchoResponse::class),
+            ],
+            services: [
+                new File\ServiceDescriptor(
+                    name: 'echos.api.v1.EchoService',
+                    methods: [
+                        new File\MethodDescriptor('Echo', false, false),
+                    ],
+                ),
+            ],
+        ));
     }
 }
diff --git a/tests/genproto/Echos/Api/V1/autoload.metadata.php b/tests/genproto/Echos/Api/V1/autoload.metadata.php
index 6d7587a..92c3227 100644
--- a/tests/genproto/Echos/Api/V1/autoload.metadata.php
+++ b/tests/genproto/Echos/Api/V1/autoload.metadata.php
@@ -3,12 +3,12 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  */
 
 declare(strict_types=1);
 
-\Thesis\Protobuf\Pool\Registry::get()->register(
-    new \Thesis\Protobuf\Pool\OnceRegistrar(new \Echos\Api\V1\TestsProtosEchoV1DescriptorRegistry()),
+\Thesis\Protobuf\Registry\Pool::get()->register(
+    new \Thesis\Protobuf\Registry\OnceRegistrar(new \Echos\Api\V1\TestsProtosEchoV1DescriptorRegistry()),
 );
diff --git a/tests/genproto/File/Api/V1/Chunk.php b/tests/genproto/File/Api/V1/Chunk.php
index a0a32e0..06acb0b 100644
--- a/tests/genproto/File/Api/V1/Chunk.php
+++ b/tests/genproto/File/Api/V1/Chunk.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/file_v1.proto
  */
diff --git a/tests/genproto/File/Api/V1/FileInfo.php b/tests/genproto/File/Api/V1/FileInfo.php
index fdcc958..b3bb8f0 100644
--- a/tests/genproto/File/Api/V1/FileInfo.php
+++ b/tests/genproto/File/Api/V1/FileInfo.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/file_v1.proto
  */
diff --git a/tests/genproto/File/Api/V1/FileServiceClient.php b/tests/genproto/File/Api/V1/FileServiceClient.php
index aff6bf5..a2a98d5 100644
--- a/tests/genproto/File/Api/V1/FileServiceClient.php
+++ b/tests/genproto/File/Api/V1/FileServiceClient.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/file_v1.proto
  */
diff --git a/tests/genproto/File/Api/V1/FileServiceServer.php b/tests/genproto/File/Api/V1/FileServiceServer.php
index eed8013..da3a1c7 100644
--- a/tests/genproto/File/Api/V1/FileServiceServer.php
+++ b/tests/genproto/File/Api/V1/FileServiceServer.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/file_v1.proto
  */
diff --git a/tests/genproto/File/Api/V1/FileServiceServerRegistry.php b/tests/genproto/File/Api/V1/FileServiceServerRegistry.php
index a5667c5..8b30e55 100644
--- a/tests/genproto/File/Api/V1/FileServiceServerRegistry.php
+++ b/tests/genproto/File/Api/V1/FileServiceServerRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/file_v1.proto
  */
diff --git a/tests/genproto/File/Api/V1/TestsProtosFileV1DescriptorRegistry.php b/tests/genproto/File/Api/V1/TestsProtosFileV1DescriptorRegistry.php
index a6712fd..dd5996f 100644
--- a/tests/genproto/File/Api/V1/TestsProtosFileV1DescriptorRegistry.php
+++ b/tests/genproto/File/Api/V1/TestsProtosFileV1DescriptorRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/file_v1.proto
  */
@@ -13,21 +13,33 @@
 namespace File\Api\V1;
 
 use Override;
-use Thesis\Protobuf\Pool;
+use Thesis\Protobuf\Registry;
+use Thesis\Protobuf\Registry\File;
 
 /**
  * @api
  */
-final readonly class TestsProtosFileV1DescriptorRegistry implements Pool\Registrar
+final readonly class TestsProtosFileV1DescriptorRegistry implements Registry\Registrar
 {
     private const string DESCRIPTOR_BUFFER = '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';
 
     #[Override]
-    public function register(Pool\Registry $pool): void
+    public function register(Registry\Pool $pool): void
     {
-        $pool->add(Pool\Descriptor::base64(self::DESCRIPTOR_BUFFER), [
-            'file.api.v1.Chunk' => new Pool\MessageMetadata(\File\Api\V1\Chunk::class),
-            'file.api.v1.FileInfo' => new Pool\MessageMetadata(\File\Api\V1\FileInfo::class),
-        ]);
+        $pool->add(Registry\Descriptor::base64(self::DESCRIPTOR_BUFFER), new File(
+            name: 'tests/protos/file_v1.proto',
+            messages: [
+                new File\MessageDescriptor('file.api.v1.Chunk', \File\Api\V1\Chunk::class),
+                new File\MessageDescriptor('file.api.v1.FileInfo', \File\Api\V1\FileInfo::class),
+            ],
+            services: [
+                new File\ServiceDescriptor(
+                    name: 'file.api.v1.FileService',
+                    methods: [
+                        new File\MethodDescriptor('Upload', true, false),
+                    ],
+                ),
+            ],
+        ));
     }
 }
diff --git a/tests/genproto/File/Api/V1/autoload.metadata.php b/tests/genproto/File/Api/V1/autoload.metadata.php
index 19131bd..627a6c5 100644
--- a/tests/genproto/File/Api/V1/autoload.metadata.php
+++ b/tests/genproto/File/Api/V1/autoload.metadata.php
@@ -3,12 +3,12 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  */
 
 declare(strict_types=1);
 
-\Thesis\Protobuf\Pool\Registry::get()->register(
-    new \Thesis\Protobuf\Pool\OnceRegistrar(new \File\Api\V1\TestsProtosFileV1DescriptorRegistry()),
+\Thesis\Protobuf\Registry\Pool::get()->register(
+    new \Thesis\Protobuf\Registry\OnceRegistrar(new \File\Api\V1\TestsProtosFileV1DescriptorRegistry()),
 );
diff --git a/tests/genproto/Topic/Api/V1/Event.php b/tests/genproto/Topic/Api/V1/Event.php
index 2d09d5d..b1c68fa 100644
--- a/tests/genproto/Topic/Api/V1/Event.php
+++ b/tests/genproto/Topic/Api/V1/Event.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/topic_v1.proto
  */
diff --git a/tests/genproto/Topic/Api/V1/SubscribeRequest.php b/tests/genproto/Topic/Api/V1/SubscribeRequest.php
index b707785..57ad187 100644
--- a/tests/genproto/Topic/Api/V1/SubscribeRequest.php
+++ b/tests/genproto/Topic/Api/V1/SubscribeRequest.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/topic_v1.proto
  */
diff --git a/tests/genproto/Topic/Api/V1/TestsProtosTopicV1DescriptorRegistry.php b/tests/genproto/Topic/Api/V1/TestsProtosTopicV1DescriptorRegistry.php
index b65dd3e..eefeede 100644
--- a/tests/genproto/Topic/Api/V1/TestsProtosTopicV1DescriptorRegistry.php
+++ b/tests/genproto/Topic/Api/V1/TestsProtosTopicV1DescriptorRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/topic_v1.proto
  */
@@ -13,21 +13,36 @@
 namespace Topic\Api\V1;
 
 use Override;
-use Thesis\Protobuf\Pool;
+use Thesis\Protobuf\Registry;
+use Thesis\Protobuf\Registry\File;
 
 /**
  * @api
  */
-final readonly class TestsProtosTopicV1DescriptorRegistry implements Pool\Registrar
+final readonly class TestsProtosTopicV1DescriptorRegistry implements Registry\Registrar
 {
     private const string DESCRIPTOR_BUFFER = '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';
 
     #[Override]
-    public function register(Pool\Registry $pool): void
+    public function register(Registry\Pool $pool): void
     {
-        $pool->add(Pool\Descriptor::base64(self::DESCRIPTOR_BUFFER), [
-            'topic.api.v1.SubscribeRequest' => new Pool\MessageMetadata(\Topic\Api\V1\SubscribeRequest::class),
-            'topic.api.v1.Event' => new Pool\MessageMetadata(\Topic\Api\V1\Event::class),
-        ]);
+        $pool->add(Registry\Descriptor::base64(self::DESCRIPTOR_BUFFER), new File(
+            name: 'tests/protos/topic_v1.proto',
+            dependencies: [
+                'google/protobuf/timestamp.proto',
+            ],
+            messages: [
+                new File\MessageDescriptor('topic.api.v1.SubscribeRequest', \Topic\Api\V1\SubscribeRequest::class),
+                new File\MessageDescriptor('topic.api.v1.Event', \Topic\Api\V1\Event::class),
+            ],
+            services: [
+                new File\ServiceDescriptor(
+                    name: 'topic.api.v1.TopicService',
+                    methods: [
+                        new File\MethodDescriptor('Subscribe', false, true),
+                    ],
+                ),
+            ],
+        ));
     }
 }
diff --git a/tests/genproto/Topic/Api/V1/TopicServiceClient.php b/tests/genproto/Topic/Api/V1/TopicServiceClient.php
index 8d9f8c8..103c966 100644
--- a/tests/genproto/Topic/Api/V1/TopicServiceClient.php
+++ b/tests/genproto/Topic/Api/V1/TopicServiceClient.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/topic_v1.proto
  */
diff --git a/tests/genproto/Topic/Api/V1/TopicServiceServer.php b/tests/genproto/Topic/Api/V1/TopicServiceServer.php
index 87d3d0e..40831ac 100644
--- a/tests/genproto/Topic/Api/V1/TopicServiceServer.php
+++ b/tests/genproto/Topic/Api/V1/TopicServiceServer.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/topic_v1.proto
  */
diff --git a/tests/genproto/Topic/Api/V1/TopicServiceServerRegistry.php b/tests/genproto/Topic/Api/V1/TopicServiceServerRegistry.php
index ca37811..94c8b4e 100644
--- a/tests/genproto/Topic/Api/V1/TopicServiceServerRegistry.php
+++ b/tests/genproto/Topic/Api/V1/TopicServiceServerRegistry.php
@@ -3,7 +3,7 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  * Source: tests/protos/topic_v1.proto
  */
diff --git a/tests/genproto/Topic/Api/V1/autoload.metadata.php b/tests/genproto/Topic/Api/V1/autoload.metadata.php
index 9db84bb..9a9032b 100644
--- a/tests/genproto/Topic/Api/V1/autoload.metadata.php
+++ b/tests/genproto/Topic/Api/V1/autoload.metadata.php
@@ -3,12 +3,12 @@
 /**
  * Code generated by thesis/protoc-plugin. DO NOT EDIT.
  * Versions:
- *   thesis/protoc-plugin — v0.1.11
+ *   thesis/protoc-plugin — v0.1.19
  *   protoc               — v6.33.5
  */
 
 declare(strict_types=1);
 
-\Thesis\Protobuf\Pool\Registry::get()->register(
-    new \Thesis\Protobuf\Pool\OnceRegistrar(new \Topic\Api\V1\TestsProtosTopicV1DescriptorRegistry()),
+\Thesis\Protobuf\Registry\Pool::get()->register(
+    new \Thesis\Protobuf\Registry\OnceRegistrar(new \Topic\Api\V1\TestsProtosTopicV1DescriptorRegistry()),
 );