diff --git a/src/ModelContextProtocol/Protocol/Types/Annotated.cs b/src/ModelContextProtocol/Protocol/Types/Annotated.cs
deleted file mode 100644
index 3096c78c1..000000000
--- a/src/ModelContextProtocol/Protocol/Types/Annotated.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace ModelContextProtocol.Protocol.Types;
-
-/// <summary>
-/// Base for objects that include optional annotations for the client. The client can use annotations to inform how objects are used or displayed.
-/// <see href="https://github.com/modelcontextprotocol/specification/blob/main/schema/">See the schema for details</see>
-/// </summary>
-public abstract record Annotated
-{
-    /// <summary>
-    /// Optional annotations for the resource.
-    /// </summary>
-    [JsonPropertyName("annotations")]
-    public Annotations? Annotations { get; init; }
-}
diff --git a/src/ModelContextProtocol/Protocol/Types/Content.cs b/src/ModelContextProtocol/Protocol/Types/Content.cs
index 71bc475db..0fb4e1358 100644
--- a/src/ModelContextProtocol/Protocol/Types/Content.cs
+++ b/src/ModelContextProtocol/Protocol/Types/Content.cs
@@ -39,4 +39,10 @@ public class Content
     /// </summary>
     [JsonPropertyName("resource")]
     public ResourceContents? Resource { get; set; }
+
+    /// <summary>
+    /// Optional annotations for the content.
+    /// </summary>
+    [JsonPropertyName("annotations")]
+    public Annotations? Annotations { get; init; }
 }
\ No newline at end of file
diff --git a/src/ModelContextProtocol/Protocol/Types/Resource.cs b/src/ModelContextProtocol/Protocol/Types/Resource.cs
index d80ac94c5..249c58464 100644
--- a/src/ModelContextProtocol/Protocol/Types/Resource.cs
+++ b/src/ModelContextProtocol/Protocol/Types/Resource.cs
@@ -6,7 +6,7 @@ namespace ModelContextProtocol.Protocol.Types;
 /// Represents a known resource that the server is capable of reading.
 /// <see href="https://github.com/modelcontextprotocol/specification/blob/main/schema/">See the schema for details</see>
 /// </summary>
-public record Resource : Annotated
+public record Resource
 {
     /// <summary>
     /// The URI of this resource.
@@ -31,4 +31,10 @@ public record Resource : Annotated
     /// </summary>
     [JsonPropertyName("mimeType")]
     public string? MimeType { get; init; }
+
+    /// <summary>
+    /// Optional annotations for the resource.
+    /// </summary>
+    [JsonPropertyName("annotations")]
+    public Annotations? Annotations { get; init; }
 }
diff --git a/src/ModelContextProtocol/Protocol/Types/ResourceTemplate.cs b/src/ModelContextProtocol/Protocol/Types/ResourceTemplate.cs
index 1df0c7eda..436be3944 100644
--- a/src/ModelContextProtocol/Protocol/Types/ResourceTemplate.cs
+++ b/src/ModelContextProtocol/Protocol/Types/ResourceTemplate.cs
@@ -6,7 +6,7 @@ namespace ModelContextProtocol.Protocol.Types;
 /// Represents a known resource template that the server is capable of reading.
 /// <see href="https://github.com/modelcontextprotocol/specification/blob/main/schema/">See the schema for details</see>
 /// </summary>
-public record ResourceTemplate : Annotated
+public record ResourceTemplate
 {
     /// <summary>
     /// The URI template (according to RFC 6570) that can be used to construct resource URIs.
@@ -31,4 +31,10 @@ public record ResourceTemplate : Annotated
     /// </summary>
     [JsonPropertyName("mimeType")]
     public string? MimeType { get; init; }
+
+    /// <summary>
+    /// Optional annotations for the resource template.
+    /// </summary>
+    [JsonPropertyName("annotations")]
+    public Annotations? Annotations { get; init; }
 }
\ No newline at end of file