diff --git a/src/dotnet/Agent/ResourceProviders/AgentResourceProviderService.cs b/src/dotnet/Agent/ResourceProviders/AgentResourceProviderService.cs
index 05f923b2d5..b7a2b87a19 100644
--- a/src/dotnet/Agent/ResourceProviders/AgentResourceProviderService.cs
+++ b/src/dotnet/Agent/ResourceProviders/AgentResourceProviderService.cs
@@ -234,6 +234,7 @@ private async Task<ResourceProviderUpsertResult> UpdateAgent(ResourcePath resour
             };
 
             agent.ObjectId = resourcePath.GetObjectId(_instanceSettings.Id, _name);
+            agent.Capabilities ??= [AgentCapabilities.OpenAIAssistants];
 
             if ((agent is KnowledgeManagementAgent {Vectorization.DedicatedPipeline: true, InlineContext: false} kmAgent))
             {
diff --git a/src/dotnet/Common/Models/ResourceProviders/Agent/AgentBase.cs b/src/dotnet/Common/Models/ResourceProviders/Agent/AgentBase.cs
index 380ec7391a..7a5c697d58 100644
--- a/src/dotnet/Common/Models/ResourceProviders/Agent/AgentBase.cs
+++ b/src/dotnet/Common/Models/ResourceProviders/Agent/AgentBase.cs
@@ -56,6 +56,12 @@ public class AgentBase : ResourceBase
         [JsonPropertyName("long_running")]
         public bool LongRunning { get; set; } = false;
 
+        /// <summary>
+        /// List of capabilities that the agent supports.
+        /// </summary>
+        [JsonPropertyName("capabilities")]
+        public string[]? Capabilities { get; set; }
+
         /// <summary>
         /// The object type of the agent.
         /// </summary>
diff --git a/src/dotnet/Common/Models/ResourceProviders/Agent/AgentCapabilities.cs b/src/dotnet/Common/Models/ResourceProviders/Agent/AgentCapabilities.cs
new file mode 100644
index 0000000000..6777fd2e82
--- /dev/null
+++ b/src/dotnet/Common/Models/ResourceProviders/Agent/AgentCapabilities.cs
@@ -0,0 +1,13 @@
+namespace FoundationaLLM.Common.Models.ResourceProviders.Agent
+{
+    /// <summary>
+    /// Contains constants for the capabilities of agents.
+    /// </summary>
+    public static class AgentCapabilities
+    {
+        /// <summary>
+        /// Indicated the agent supports the OpenAI Assistants API capability.
+        /// </summary>
+        public const string OpenAIAssistants = "OpenAIAssistants";
+    }
+}