diff --git a/src/Infrastructure/BotSharp.Abstraction/Loggers/Models/AgentQueueChangedLogModel.cs b/src/Infrastructure/BotSharp.Abstraction/Loggers/Models/AgentQueueChangedLogModel.cs
new file mode 100644
index 000000000..0fca07642
--- /dev/null
+++ b/src/Infrastructure/BotSharp.Abstraction/Loggers/Models/AgentQueueChangedLogModel.cs
@@ -0,0 +1,13 @@
+namespace BotSharp.Abstraction.Loggers.Models;
+
+public class AgentQueueChangedLogModel
+{
+    [JsonPropertyName("conversation_id")]
+    public string ConversationId { get; set; }
+
+    [JsonPropertyName("log")]
+    public string Log { get; set; }
+
+    [JsonPropertyName("created_at")]
+    public DateTime CreateTime { get; set; }
+}
diff --git a/src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.RefreshAgents.cs b/src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.RefreshAgents.cs
index 2831a669e..9c3b34f9b 100644
--- a/src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.RefreshAgents.cs
+++ b/src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.RefreshAgents.cs
@@ -1,8 +1,4 @@
-using BotSharp.Abstraction.Agents.Models;
-using BotSharp.Abstraction.Repositories;
 using BotSharp.Abstraction.Tasks.Models;
-using Microsoft.Extensions.Caching.Memory;
-using System.Collections.Generic;
 using System.IO;
 
 namespace BotSharp.Core.Agents.Services;
diff --git a/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs b/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs
index 320dd21fd..2162bcb97 100644
--- a/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs
+++ b/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs
@@ -247,9 +247,13 @@ public async Task OnAgentEnqueued(string agentId, string preAgentId, string? rea
     {
         var conversationId = _state.GetConversationId();
         var agent = await _agentService.LoadAgent(agentId);
-        var preAgent = await _agentService.LoadAgent(preAgentId);
 
-        var log = $"{agent.Name} is enqueued{(reason != null ? $" ({reason})" : "")}";
+        // Agent queue log
+        var log = $"{agent.Name} is enqueued";
+        await _chatHub.Clients.User(_user.Id).SendAsync("OnAgentQueueChanged", BuildAgentQueueChangedLog(conversationId, log));
+
+        // Content log
+        log = $"{agent.Name} is enqueued{(reason != null ? $" ({reason})" : "")}";
         var message = new RoleDialogModel(AgentRole.System, log)
         {
             MessageId = _routingCtx.MessageId
@@ -270,7 +274,12 @@ public async Task OnAgentDequeued(string agentId, string currentAgentId, string?
         var agent = await _agentService.LoadAgent(agentId);
         var currentAgent = await _agentService.LoadAgent(currentAgentId);
 
-        var log = $"{agent.Name} is dequeued{(reason != null ? $" ({reason})" : "")}, current agent is {currentAgent?.Name}";
+        // Agent queue log
+        var log = $"{agent.Name} is dequeued";
+        await _chatHub.Clients.User(_user.Id).SendAsync("OnAgentQueueChanged", BuildAgentQueueChangedLog(conversationId, log));
+
+        // Content log
+        log = $"{agent.Name} is dequeued{(reason != null ? $" ({reason})" : "")}, current agent is {currentAgent?.Name}";
         var message = new RoleDialogModel(AgentRole.System, log)
         {
             MessageId = _routingCtx.MessageId
@@ -291,7 +300,12 @@ public async Task OnAgentReplaced(string fromAgentId, string toAgentId, string?
         var fromAgent = await _agentService.LoadAgent(fromAgentId);
         var toAgent = await _agentService.LoadAgent(toAgentId);
 
-        var log = $"{fromAgent.Name} is replaced to {toAgent.Name}{(reason != null ? $" ({reason})" : "")}";
+        // Agent queue log
+        var log = $"Agent queue is replaced from {fromAgent.Name} to {toAgent.Name}";
+        await _chatHub.Clients.User(_user.Id).SendAsync("OnAgentQueueChanged", BuildAgentQueueChangedLog(conversationId, log));
+
+        // Content log
+        log = $"{fromAgent.Name} is replaced to {toAgent.Name}{(reason != null ? $" ({reason})" : "")}";
         var message = new RoleDialogModel(AgentRole.System, log)
         {
             MessageId = _routingCtx.MessageId
@@ -309,9 +323,13 @@ public async Task OnAgentReplaced(string fromAgentId, string toAgentId, string?
     public async Task OnAgentQueueEmptied(string agentId, string? reason = null)
     {
         var conversationId = _state.GetConversationId();
-        var agent = await _agentService.LoadAgent(agentId);
 
-        var log = reason ?? "Agent queue is cleared";
+        // Agent queue log
+        var log = $"Agent queue is empty";
+        await _chatHub.Clients.User(_user.Id).SendAsync("OnAgentQueueChanged", BuildAgentQueueChangedLog(conversationId, log));
+
+        // Content log
+        log = reason ?? "Agent queue is cleared";
         var message = new RoleDialogModel(AgentRole.System, log)
         {
             MessageId = _routingCtx.MessageId
@@ -423,4 +441,16 @@ private string BuildStateChangeLog(StateChangeModel stateChange)
 
         return JsonSerializer.Serialize(log, _options.JsonSerializerOptions);
     }
+
+    private string BuildAgentQueueChangedLog(string conversationId, string log)
+    {
+        var model = new AgentQueueChangedLogModel
+        {
+            ConversationId = conversationId,
+            Log = log,
+            CreateTime = DateTime.UtcNow
+        };
+
+        return JsonSerializer.Serialize(model, _options.JsonSerializerOptions);
+    }
 }
diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Models/FunctionDefMongoElement.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Models/FunctionDefMongoElement.cs
index 5910661fa..dac77d693 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Models/FunctionDefMongoElement.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Models/FunctionDefMongoElement.cs
@@ -8,6 +8,7 @@ public class FunctionDefMongoElement
 {
     public string Name { get; set; }
     public string Description { get; set; }
+    public string? VisibilityExpression { get; set; }
     public string? Impact { get; set; }
     public FunctionParametersDefMongoElement Parameters { get; set; } = new FunctionParametersDefMongoElement();
 
@@ -22,6 +23,7 @@ public static FunctionDefMongoElement ToMongoElement(FunctionDef function)
         {
             Name = function.Name,
             Description = function.Description,
+            VisibilityExpression = function.VisibilityExpression,
             Impact = function.Impact,
             Parameters = new FunctionParametersDefMongoElement
             {
@@ -38,6 +40,7 @@ public static FunctionDef ToDomainElement(FunctionDefMongoElement mongoFunction)
         {
             Name = mongoFunction.Name,
             Description = mongoFunction.Description,
+            VisibilityExpression = mongoFunction.VisibilityExpression,
             Impact = mongoFunction.Impact,
             Parameters = new FunctionParametersDef
             {
diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.Agent.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.Agent.cs
index 75d496f88..3272930b3 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.Agent.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.Agent.cs
@@ -1,11 +1,7 @@
 using BotSharp.Abstraction.Agents.Models;
-using BotSharp.Abstraction.Conversations.Models;
-using BotSharp.Abstraction.Evaluations.Settings;
 using BotSharp.Abstraction.Functions.Models;
 using BotSharp.Abstraction.Repositories.Filters;
 using BotSharp.Abstraction.Routing.Models;
-using BotSharp.Abstraction.Routing.Settings;
-using BotSharp.Abstraction.Tasks.Models;
 using BotSharp.Plugin.MongoStorage.Collections;
 using BotSharp.Plugin.MongoStorage.Models;