From 15320d281fdc3b08877e3f5610ff0e2a61bdbc28 Mon Sep 17 00:00:00 2001
From: Tom Hart <thomas.hart@sky.uk>
Date: Sun, 20 Jul 2025 13:03:01 +0100
Subject: [PATCH] Make content an array to match the MCP spec

---
 src/mcp-sdk/src/Server/RequestHandler/ToolCallHandler.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mcp-sdk/src/Server/RequestHandler/ToolCallHandler.php b/src/mcp-sdk/src/Server/RequestHandler/ToolCallHandler.php
index d4f2a2d6..49c16562 100644
--- a/src/mcp-sdk/src/Server/RequestHandler/ToolCallHandler.php
+++ b/src/mcp-sdk/src/Server/RequestHandler/ToolCallHandler.php
@@ -60,7 +60,7 @@ public function createResponse(Request $message): Response|Error
         };
 
         return new Response($message->id, [
-            'content' => $content,
+            'content' => [$content], // TODO: allow multiple `ToolCallResult`s in the future
             'isError' => $result->isError,
         ]);
     }