diff --git a/dotnet/Directory.Packages.props b/dotnet/Directory.Packages.props
index 10c96ab11c..67397efff4 100644
--- a/dotnet/Directory.Packages.props
+++ b/dotnet/Directory.Packages.props
@@ -7,15 +7,15 @@
- 9.5.2
+ 13.0.0
-
+
-
+
@@ -23,18 +23,18 @@
-
+
-
-
-
+
+
+
-
-
-
-
-
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+
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+
+
@@ -47,27 +47,27 @@
-
-
+
+
-
-
-
-
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-
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-
-
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-
-
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-
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@@ -102,7 +102,7 @@
-
+
@@ -114,7 +114,7 @@
-
+
all
runtime; build; native; contentfiles; analyzers; buildtransitive
diff --git a/dotnet/agent-framework-dotnet.slnx b/dotnet/agent-framework-dotnet.slnx
index 319333d5d8..4a01d4e6ea 100644
--- a/dotnet/agent-framework-dotnet.slnx
+++ b/dotnet/agent-framework-dotnet.slnx
@@ -64,6 +64,7 @@
+
@@ -169,7 +170,6 @@
-
diff --git a/dotnet/samples/HostedAgents/DeepResearchAgent/DeepResearchAgent.csproj b/dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/Agent_Step18_DeepResearch.csproj
similarity index 75%
rename from dotnet/samples/HostedAgents/DeepResearchAgent/DeepResearchAgent.csproj
rename to dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/Agent_Step18_DeepResearch.csproj
index 7ae71d83de..11c7beb3bf 100644
--- a/dotnet/samples/HostedAgents/DeepResearchAgent/DeepResearchAgent.csproj
+++ b/dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/Agent_Step18_DeepResearch.csproj
@@ -14,7 +14,7 @@
-
+
diff --git a/dotnet/samples/HostedAgents/DeepResearchAgent/Program.cs b/dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/Program.cs
similarity index 100%
rename from dotnet/samples/HostedAgents/DeepResearchAgent/Program.cs
rename to dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/Program.cs
diff --git a/dotnet/samples/HostedAgents/DeepResearchAgent/README.md b/dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/README.md
similarity index 100%
rename from dotnet/samples/HostedAgents/DeepResearchAgent/README.md
rename to dotnet/samples/GettingStarted/Agents/Agent_Step18_DeepResearch/README.md
diff --git a/dotnet/samples/GettingStarted/Agents/README.md b/dotnet/samples/GettingStarted/Agents/README.md
index b93e9ceb72..f510b03faf 100644
--- a/dotnet/samples/GettingStarted/Agents/README.md
+++ b/dotnet/samples/GettingStarted/Agents/README.md
@@ -44,6 +44,7 @@ Before you begin, ensure you have the following prerequisites:
|[Using plugins with an agent](./Agent_Step15_Plugins/)|This sample demonstrates how to use plugins with an agent|
|[Reducing chat history size](./Agent_Step16_ChatReduction/)|This sample demonstrates how to reduce the chat history to constrain its size, where chat history is maintained locally|
|[Background responses](./Agent_Step17_BackgroundResponses/)|This sample demonstrates how to use background responses for long-running operations with polling and resumption support|
+|[Deep research with an agent](./Agent_Step18_DeepResearch/)|This sample demonstrates how to use the Deep Research Tool to perform comprehensive research on complex topics|
## Running the samples from the console
diff --git a/dotnet/src/Microsoft.Agents.AI.Hosting.OpenAI/ChatCompletions/Models/Tool.cs b/dotnet/src/Microsoft.Agents.AI.Hosting.OpenAI/ChatCompletions/Models/Tool.cs
index 87b0637b9b..412494eeaa 100644
--- a/dotnet/src/Microsoft.Agents.AI.Hosting.OpenAI/ChatCompletions/Models/Tool.cs
+++ b/dotnet/src/Microsoft.Agents.AI.Hosting.OpenAI/ChatCompletions/Models/Tool.cs
@@ -160,5 +160,5 @@ internal sealed record CustomToolFormat
/// Additional format properties (schema definition).
///
[JsonExtensionData]
- public Dictionary? AdditionalProperties { get; init; }
+ public Dictionary? AdditionalProperties { get; set; }
}