diff --git a/composer.json b/composer.json
index 2a293e6..3aeb9f8 100644
--- a/composer.json
+++ b/composer.json
@@ -12,8 +12,9 @@
         "react/event-loop": "^1.5",
         "react/http": "^1.11",
         "react/promise": "^3.2",
-        "react/stream": "^1.4"
-    },
+        "react/stream": "^1.4",
+	    "ext-pcntl": "*"
+	},
     "require-dev": {
         "pestphp/pest": "^2.3 || ^3.0",
         "mockery/mockery": "^1.6",
diff --git a/src/Client.php b/src/Client.php
index d0b4ebc..15b9d78 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -5,6 +5,7 @@
 namespace PhpMcp\Client;
 
 use PhpMcp\Client\Cache\DefinitionCache;
+use PhpMcp\Client\Contracts\MessageIdGeneratorInterface;
 use PhpMcp\Client\Contracts\TransportInterface;
 use PhpMcp\Client\Enum\ConnectionStatus;
 use PhpMcp\Client\Exception\ConfigurationException;
@@ -15,7 +16,6 @@
 use PhpMcp\Client\Exception\TimeoutException;
 use PhpMcp\Client\Exception\TransportException;
 use PhpMcp\Client\Exception\UnsupportedCapabilityException;
-use PhpMcp\Client\Factory\MessageIdGenerator;
 use PhpMcp\Client\Factory\TransportFactory;
 use PhpMcp\Client\JsonRpc\Message;
 use PhpMcp\Client\JsonRpc\Notification;
@@ -31,7 +31,9 @@
 use PhpMcp\Client\JsonRpc\Results\ListToolsResult;
 use PhpMcp\Client\JsonRpc\Results\ReadResourceResult;
 use PhpMcp\Client\Model\Capabilities;
+use PhpMcp\Client\Model\Definitions\PromptDefinition;
 use PhpMcp\Client\Model\Definitions\ResourceDefinition;
+use PhpMcp\Client\Model\Definitions\ResourceTemplateDefinition;
 use PhpMcp\Client\Model\Definitions\ToolDefinition;
 use PhpMcp\Client\Transport\Stdio\StdioClientTransport;
 use Psr\Log\LoggerInterface;
@@ -56,7 +58,7 @@ class Client
 
     protected readonly LoopInterface $loop;
 
-    protected readonly MessageIdGenerator $idGenerator;
+    protected readonly MessageIdGeneratorInterface $idGenerator;
 
     protected readonly TransportFactory $transportFactory;
 
diff --git a/src/ClientBuilder.php b/src/ClientBuilder.php
index 55b7554..7363415 100644
--- a/src/ClientBuilder.php
+++ b/src/ClientBuilder.php
@@ -4,9 +4,8 @@
 
 namespace PhpMcp\Client;
 
-use Deprecated;
+use PhpMcp\Client\Contracts\MessageIdGeneratorInterface;
 use PhpMcp\Client\Exception\ConfigurationException;
-use PhpMcp\Client\Factory\MessageIdGenerator;
 use PhpMcp\Client\Factory\TransportFactory; // Added use
 use PhpMcp\Client\Model\Capabilities as ClientCapabilities;
 use Psr\EventDispatcher\EventDispatcherInterface;
@@ -34,7 +33,7 @@ class ClientBuilder
 
     protected ?EventDispatcherInterface $eventDispatcher = null;
 
-    protected ?MessageIdGenerator $idGenerator = null;
+    protected ?MessageIdGeneratorInterface $idGenerator = null;
 
     protected ?LoopInterface $loop = null;
 
@@ -104,7 +103,7 @@ public function withEventDispatcher(EventDispatcherInterface $eventDispatcher):
         return $this;
     }
 
-    public function withIdGenerator(MessageIdGenerator $generator): self
+    public function withIdGenerator(MessageIdGeneratorInterface $generator): self
     {
         $this->idGenerator = $generator;
 
diff --git a/src/ClientConfig.php b/src/ClientConfig.php
index 5583cb0..bbcde00 100644
--- a/src/ClientConfig.php
+++ b/src/ClientConfig.php
@@ -4,6 +4,7 @@
 
 namespace PhpMcp\Client;
 
+use PhpMcp\Client\Contracts\MessageIdGeneratorInterface;
 use PhpMcp\Client\Factory\MessageIdGenerator;
 use PhpMcp\Client\Model\Capabilities as ClientCapabilities;
 use Psr\EventDispatcher\EventDispatcherInterface;
@@ -26,7 +27,7 @@ class ClientConfig
 
     public LoopInterface $loop;
 
-    public readonly MessageIdGenerator $idGenerator;
+    public readonly MessageIdGeneratorInterface $idGenerator;
 
     /**
      * @param  string  $name  The name of this client application.
@@ -35,8 +36,9 @@ class ClientConfig
      * @param  LoggerInterface|null  $logger  Optional PSR-3 logger. Defaults to NullLogger.
      * @param  CacheInterface|null  $cache  Optional PSR-16 cache for definition caching.
      * @param  EventDispatcherInterface|null  $eventDispatcher  Optional PSR-14 dispatcher for notifications.
-     * @param  LoopInterface  $loop  The ReactPHP event loop instance.
+     * @param  LoopInterface|null  $loop  The ReactPHP event loop instance.
      * @param  int  $definitionCacheTtl  TTL for cached definitions (tools, resources etc.) in seconds.
+     * @param MessageIdGeneratorInterface|null $idGenerator Optional message ID generator.
      */
     public function __construct(
         public readonly string $name,
@@ -47,7 +49,7 @@ public function __construct(
         ?EventDispatcherInterface $eventDispatcher = null,
         ?LoopInterface $loop = null,
         public int $definitionCacheTtl = 3600,
-        ?MessageIdGenerator $idGenerator = null,
+        ?MessageIdGeneratorInterface $idGenerator = null,
     ) {
         $this->logger = $logger ?? new NullLogger;
         $this->cache = $cache;
diff --git a/src/Contracts/MessageIdGeneratorInterface.php b/src/Contracts/MessageIdGeneratorInterface.php
new file mode 100644
index 0000000..0cdb5d4
--- /dev/null
+++ b/src/Contracts/MessageIdGeneratorInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMcp\Client\Contracts;
+
+interface MessageIdGeneratorInterface
+{
+    public function generate(): string;
+}
\ No newline at end of file
diff --git a/src/Factory/MessageIdGenerator.php b/src/Factory/MessageIdGenerator.php
index f93ee90..152ec32 100644
--- a/src/Factory/MessageIdGenerator.php
+++ b/src/Factory/MessageIdGenerator.php
@@ -4,10 +4,12 @@
 
 namespace PhpMcp\Client\Factory;
 
+use PhpMcp\Client\Contracts\MessageIdGeneratorInterface;
+
 /**
  * Generates unique IDs for JSON-RPC requests.
  */
-class MessageIdGenerator
+class MessageIdGenerator implements MessageIdGeneratorInterface
 {
     private int $counter = 0;
 
diff --git a/src/JsonRpc/Error.php b/src/JsonRpc/Error.php
index c7fade9..e13ff17 100644
--- a/src/JsonRpc/Error.php
+++ b/src/JsonRpc/Error.php
@@ -4,7 +4,7 @@
 
 namespace PhpMcp\Client\JsonRpc;
 
-use Psy\Readline\Hoa\ProtocolException;
+use PhpMcp\Client\Exception\ProtocolException;
 
 class Error
 {
diff --git a/src/JsonRpc/Notification.php b/src/JsonRpc/Notification.php
index 6ad7034..5c9ae58 100644
--- a/src/JsonRpc/Notification.php
+++ b/src/JsonRpc/Notification.php
@@ -4,7 +4,7 @@
 
 namespace PhpMcp\Client\JsonRpc;
 
-use Psy\Readline\Hoa\ProtocolException;
+use PhpMcp\Client\Exception\ProtocolException;
 
 final class Notification extends Message
 {