Rename McpServerToolAttribute.OutputSchema to OutputSchemaType

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

Author: Copilot

src/ModelContextProtocol.Core/Server/AIFunctionMcpServerTool.cs

@@ -206,7 +206,7 @@ private static McpServerToolCreateOptions DeriveOptions(MethodInfo method, McpSe
 
             newOptions.UseStructuredContent = toolAttr.UseStructuredContent;
 
-            if (toolAttr.OutputSchema is Type outputSchemaType)
+            if (toolAttr.OutputSchemaType is Type outputSchemaType)
             {
                 newOptions.OutputSchema ??= AIJsonUtilities.CreateJsonSchema(outputSchemaType,
                     serializerOptions: newOptions.SerializerOptions ?? McpJsonUtilities.DefaultOptions,

src/ModelContextProtocol.Core/Server/McpServerToolAttribute.cs

@@ -284,7 +284,7 @@ public bool ReadOnly
     /// <see cref="UseStructuredContent"/> must also be set to <see langword="true"/> for this property to take effect.
     /// </para>
     /// </remarks>
-    public Type? OutputSchema { get; set; }
+    public Type? OutputSchemaType { get; set; }
 
     /// <summary>
     /// Gets or sets the source URI for the tool's icon.

tests/ModelContextProtocol.Tests/Server/McpServerToolTests.cs

@@ -780,7 +780,7 @@ public async Task OutputSchema_Options_OverridesReturnTypeSchema_InvokeAndValida
         AssertMatchesJsonSchema(tool.ProtocolTool.OutputSchema.Value, result.StructuredContent);
     }
 
-    [McpServerTool(UseStructuredContent = true, OutputSchema = typeof(Person))]
+    [McpServerTool(UseStructuredContent = true, OutputSchemaType = typeof(Person))]
     private static CallToolResult ToolWithOutputSchemaAttribute()
     {
         var person = new Person("John", 27);
@@ -791,7 +791,7 @@ private static CallToolResult ToolWithOutputSchemaAttribute()
         };
     }
 
-    [McpServerTool(UseStructuredContent = false, OutputSchema = typeof(Person))]
+    [McpServerTool(UseStructuredContent = false, OutputSchemaType = typeof(Person))]
     private static CallToolResult ToolWithOutputSchemaButNoStructuredContent()
     {
         return new CallToolResult()