Fix meta missing in CallToolResult (#38)

* Fix meta missing in CallToolResult

* version bump

Author: leehack

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.6.1
+
+- Fix issue with CallToolResult not including metadata
+
 ## 0.6.0
 
 - Add ToolInputSchema and ToolOutputSchema support in server.tool()

lib/src/shared/protocol.dart

@@ -745,7 +745,8 @@ abstract class Protocol {
 
     return completer.future.then((response) {
       try {
-        return resultFactory(response.result);
+        return resultFactory(
+            response.toJson()['result'] as Map<String, dynamic>);
       } catch (e, s) {
         throw McpError(
           ErrorCode.internalError.value,

lib/src/types.dart

@@ -1980,6 +1980,7 @@ class CallToolResult implements BaseResultData {
 
     // Content may optionally be included even if structured based on the unstructuredCompatibility flag.
     result['content'] = content.map((c) => c.toJson()).toList();
+    result['meta'] = meta;
 
     // Structured or unstructured?
     // Error can only be included if unstructured.

pubspec.yaml

@@ -1,6 +1,6 @@
 name: mcp_dart
 description: Dart Implementation of Model Context Protocol (MCP) SDK.
-version: 0.6.0
+version: 0.6.1
 repository: https://github.com/leehack/mcp_dart
 
 environment: