diff --git a/src/Transport/AbstractTransport.php b/src/Transport/AbstractTransport.php
deleted file mode 100644
index d565cc0..0000000
--- a/src/Transport/AbstractTransport.php
+++ /dev/null
@@ -1,87 +0,0 @@
-<?php
-
-namespace MCP\Server\Transport;
-
-use MCP\Server\Message\JsonRpcMessage;
-use MCP\Server\Exception\TransportException;
-
-/**
- * Abstract base class for message transports.
- * Provides common functionality for message transports, including message
- * encoding/decoding, size validation, and basic logging. Subclasses must
- * implement the core `receive` and `send` methods as defined in TransportInterface.
- */
-abstract class AbstractTransport implements TransportInterface
-{
-    /**
-     * Maximum allowed message size in bytes (currently 10MB).
-     * Used to prevent excessively large messages from being processed.
-     */
-    protected const MAX_MESSAGE_SIZE = 10 * 1024 * 1024;
-
-    /**
-     * Validates and encodes a single JsonRpcMessage for transport.
-     *
-     * @param JsonRpcMessage $message The message to encode.
-     * @return string The JSON encoded message string.
-     * @throws TransportException If the encoded message exceeds MAX_MESSAGE_SIZE.
-     */
-    protected function encodeMessage(JsonRpcMessage $message): string
-    {
-        $json = $message->toJson();
-
-        if (strlen($json) > static::MAX_MESSAGE_SIZE) {
-            throw new TransportException("Encoded message exceeds size limit of " . static::MAX_MESSAGE_SIZE . " bytes.");
-        }
-
-        return $json;
-    }
-
-    /**
-     * Decodes and validates a received JSON string into a JsonRpcMessage.
-     *
-     * @param string $data The raw JSON data received from the transport.
-     * @return JsonRpcMessage|null The decoded message, or null if decoding fails (e.g., invalid JSON).
-     * @throws TransportException If the received data string exceeds MAX_MESSAGE_SIZE before decoding.
-     */
-    protected function decodeMessage(string $data): ?JsonRpcMessage
-    {
-        if (strlen($data) > static::MAX_MESSAGE_SIZE) {
-            throw new TransportException("Received data exceeds size limit of " . static::MAX_MESSAGE_SIZE . " bytes.");
-        }
-
-        try {
-            return JsonRpcMessage::fromJson($data);
-        } catch (\Exception $e) {
-            // Log but don't throw - allow server to handle invalid messages
-            $this->log("Error parsing received JSON message: " . $e->getMessage() . ". Data: " . substr($data, 0, 200) . "...");
-            return null;
-        }
-    }
-
-    /**
-     * Logs a message related to the transport's operation.
-     *
-     * This default implementation writes messages to PHP's error_log.
-     * Subclasses can override this to use a more sophisticated logging mechanism.
-     *
-     * @param string $message The message to log.
-     */
-    public function log(string $message): void
-    {
-        error_log(get_class($this) . ": " . $message);
-    }
-
-    /**
-     * Indicates a preference for using Server-Sent Events (SSE) for streaming responses, if applicable.
-     *
-     * Transports that support SSE (like HttpTransport) can use this hint to switch
-     * their response mode. Other transports can ignore this.
-     *
-     * @param bool $prefer True to prefer SSE, false otherwise.
-     */
-    public function preferSseStream(bool $prefer = true): void
-    {
-        // Default implementation does nothing, to be overridden by transports that support SSE.
-    }
-}
diff --git a/src/Transport/HttpTransport.php b/src/Transport/HttpTransport.php
index 98c1945..7a7b21a 100644
--- a/src/Transport/HttpTransport.php
+++ b/src/Transport/HttpTransport.php
@@ -24,7 +24,7 @@
  * Origin checks, complex ACK logic, and related session properties have been removed.
  * It primarily focuses on basic JSON-RPC via POST.
  */
-class HttpTransport extends AbstractTransport
+class HttpTransport implements TransportInterface
 {
     // Kept essential properties for basic POST JSON-RPC.
     /** @var ResponseInterface|null The PSR-7 response object being prepared. */
@@ -266,4 +266,20 @@ public function getResponse(): ResponseInterface
         }
         return $this->response;
     }
+
+    /**
+     * Indicates a preference for using Server-Sent Events (SSE) for streaming responses, if applicable.
+     *
+     * Transports that support SSE (like HttpTransport) can use this hint to switch
+     * their response mode. Other transports can ignore this.
+     *
+     * @param bool $prefer True to prefer SSE, false otherwise.
+     */
+    public function preferSseStream(bool $prefer = true): void
+    {
+        // Default implementation does nothing, to be overridden by transports that support SSE.
+        // In a real HttpTransport that supports SSE, this method would set a flag
+        // to change response content-type and formatting in the send() method.
+        // For this simplified version, it remains a no-op.
+    }
 }
diff --git a/src/Transport/StdioTransport.php b/src/Transport/StdioTransport.php
index 3d30a57..c96a73f 100644
--- a/src/Transport/StdioTransport.php
+++ b/src/Transport/StdioTransport.php
@@ -13,7 +13,7 @@
  * Implements a transport using STDIN, STDOUT, and STDERR for line-based JSON messaging.
  * Each JSON-RPC message (or batch of messages) is expected to be on a single line.
  */
-class StdioTransport extends AbstractTransport
+class StdioTransport implements TransportInterface
 {
     /** @var resource The standard input stream. */
     private $stdin;
@@ -203,4 +203,15 @@ public function isStreamOpen(): bool
     {
         return false;
     }
+
+    /**
+     * Indicates a preference for using Server-Sent Events (SSE) for streaming responses, if applicable.
+     * StdioTransport does not support SSE, so this is a no-op.
+     *
+     * @param bool $prefer True to prefer SSE, false otherwise.
+     */
+    public function preferSseStream(bool $prefer = true): void
+    {
+        // StdioTransport does not support SSE.
+    }
 }
diff --git a/src/Transport/TransportInterface.php b/src/Transport/TransportInterface.php
index 6cd95fc..b922e9d 100644
--- a/src/Transport/TransportInterface.php
+++ b/src/Transport/TransportInterface.php
@@ -50,16 +50,6 @@ public function receive(): ?array;
      */
     public function send(JsonRpcMessage|array $message): void;
 
-    /**
-     * Logs a message specific to the transport's operation.
-     *
-     * Example: For StdioTransport, this might write to STDERR.
-     * For HttpTransport, it might use a PSR-3 logger if integrated.
-     *
-     * @param string $message The message to log.
-     */
-    public function log(string $message): void;
-
     /**
      * Checks if the transport connection is considered closed.
      *