Improve SamplingMessage DebuggerDisplay to show text content

Copilot · stephentoub · Copilot · commit f74c0c9d2cd3 · 2025-12-05T21:12:26.000Z
Show actual text when Content contains a single TextContentBlock, similar to PromptMessage

Co-authored-by: stephentoub &lt;2642209+stephentoub@users.noreply.github.com&gt;
diff --git a/src/ModelContextProtocol.Core/Protocol/SamplingMessage.cs b/src/ModelContextProtocol.Core/Protocol/SamplingMessage.cs
@@ -57,6 +57,12 @@ private string DebuggerDisplay
     {
         get
         {
+            // Show actual text content if it's a single TextContentBlock
+            if (Content.Count == 1 && Content[0] is TextContentBlock textBlock)
+            {
+                return $"Role = {Role}, Text = \"{textBlock.Text}\"";
+            }
+
             string contentTypes = Content.Count == 1 
                 ? Content[0].Type 
                 : $"{Content.Count} items";

Original file line number	Diff line number	Diff line change
`@@ -57,6 +57,12 @@ private string DebuggerDisplay`
`57`	`57`	`{`
`58`	`58`	`get`
`59`	`59`	`{`
	`60`	`+ // Show actual text content if it's a single TextContentBlock`
	`61`	`+ if (Content.Count == 1 && Content[0] is TextContentBlock textBlock)`
	`62`	`+ {`
	`63`	`+ return $"Role = {Role}, Text = \"{textBlock.Text}\"";`
	`64`	`+ }`
	`65`	`+`
`60`	`66`	`string contentTypes = Content.Count == 1`
`61`	`67`	`? Content[0].Type`
`62`	`68`	`: $"{Content.Count} items";`