diff --git a/Controllers/XAiServiceControllerBase.cs b/Controllers/XAiServiceControllerBase.cs
index 85bf350..9eebff1 100644
--- a/Controllers/XAiServiceControllerBase.cs
+++ b/Controllers/XAiServiceControllerBase.cs
@@ -1,4 +1,5 @@
 using System;
+using xModels.Dtos;
 using System.Text.Json;
 using System.Threading;
 using xAiModels.Models;
@@ -164,14 +165,16 @@ namespace xAiApi.Controllers
         #endregion
 
         //
-        #region Data Provided Actions ...
+        #region Loaders ...
         /// <summary>
         /// Retrieve AI Projects ...
         /// </summary>
+        /// <param name="includeDefaults"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
         [HttpGet("Projects")]
         public async Task<ActionResult<IEnumerable<XAiProjectDto>>> LoadProjects(
+            [FromQuery] bool includeDefaults = false,
             CancellationToken cancellationToken = default
         )
         {
@@ -186,6 +189,7 @@ namespace xAiApi.Controllers
                 var result = await aiService.LoadProjects(
                     ownerId: userInfo.UserId,
                     connectionId: connectionId,
+                    includeDefaults: includeDefaults,
                     cancellationToken: cancellationToken
                 );
 
@@ -282,7 +286,132 @@ namespace xAiApi.Controllers
                 return result;
             }
         }
+        #endregion
 
+        //
+        #region Queries ...
+        /// <summary>
+        /// Query Projects ...
+        /// </summary>
+        /// <remarks>
+        /// </remarks>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("Projects/Query")]
+        public async Task<ActionResult<XQueryResult<XAiProjectDto>>> QueryProjects(
+            [FromQuery] XQuery query,
+            CancellationToken cancellationToken = default
+        )
+        {
+            //
+            try
+            {
+                //
+                var userInfo = await GetUserInfo();
+                var connectionId = GetConnectionId();
+
+                //
+                var result = await aiService.QueryProjects(
+                    query: query,
+                    ownerId: userInfo.UserId,
+                    cancellationToken: cancellationToken
+                );
+
+                //
+                return Ok(result);
+            }
+            catch (Exception ex)
+            {
+                //
+                var result = GetExceptionActionResult(ex);
+                return result;
+            }
+        }
+
+        /// <summary>
+        /// Query Conversations ...
+        /// </summary>
+        /// <param name="projectId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("Projects/{projectId}/Conversations/Query")]
+        public async Task<ActionResult<XQueryResult<XAiConversationDto>>> QueryConversations(
+            [FromRoute] Guid projectId,
+            [FromQuery] XQuery query,
+            CancellationToken cancellationToken = default
+        )
+        {
+            //
+            try
+            {
+                //
+                var userInfo = await GetUserInfo();
+                var connectionId = GetConnectionId();
+
+                //
+                var result = await aiService.QueryConversations(
+                    query: query,
+                    projectId: projectId,
+                    ownerId: userInfo.UserId,
+                    cancellationToken: cancellationToken
+                );
+
+                //
+                return Ok(result);
+            }
+            catch (Exception ex)
+            {
+                //
+                var result = GetExceptionActionResult(ex);
+                return result;
+            }
+        }
+
+        /// <summary>
+        /// Query Messages ...
+        /// </summary>
+        /// <param name="conversationId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("Conversations/{conversationId}/Messages/Query")]
+        public async Task<ActionResult<XQueryResult<XAiMessageDto>>> QueryMessages(
+            [FromRoute] Guid conversationId,
+            [FromQuery] XQuery query,
+            CancellationToken cancellationToken = default
+        )
+        {
+            //
+            try
+            {
+                //
+                var userInfo = await GetUserInfo();
+                var connectionId = GetConnectionId();
+
+                //
+                var result = await aiService.QueryMessages(
+                    query: query,
+                    ownerId: userInfo.UserId,
+                    conversationId: conversationId,
+                    cancellationToken: cancellationToken
+                );
+
+                //
+                return Ok(result);
+            }
+            catch (Exception ex)
+            {
+                //
+                var result = GetExceptionActionResult(ex);
+                return result;
+            }
+        }
+        #endregion
+
+        //
+        #region Creators ...
         /// <summary>
         /// Create an AI Project ...
         /// </summary>
@@ -333,7 +462,7 @@ namespace xAiApi.Controllers
                 //
                 var result = GetExceptionActionResult(ex);
                 return result;
-            }            
+            }
         }
 
         /// <summary>
@@ -355,7 +484,7 @@ namespace xAiApi.Controllers
             {
                 //
                 // Validate ...
-                if (projectId.IsDefaultGuid() || 
+                if (projectId.IsDefaultGuid() ||
                     item.IsNullOrDefault())
                 {
                     XException.InvalidArgs.Throw();
@@ -390,9 +519,12 @@ namespace xAiApi.Controllers
                 //
                 var result = GetExceptionActionResult(ex);
                 return result;
-            }                        
+            }
         }
+        #endregion
 
+        //
+        #region Data Actions ...
         /// <summary>
         /// Ask Question and Get Response ...
         /// </summary>
diff --git a/Interfaces/IXAiServiceBase.cs b/Interfaces/IXAiServiceBase.cs
index 7869fb4..582b6aa 100644
--- a/Interfaces/IXAiServiceBase.cs
+++ b/Interfaces/IXAiServiceBase.cs
@@ -1,4 +1,5 @@
 using System;
+using xModels.Dtos;
 using System.Net.Http;
 using System.Threading;
 using xAiModels.Models;
@@ -92,11 +93,13 @@ namespace xAiApi.Interfaces
         /// </summary>
         /// <param name="ownerId"></param>
         /// <param name="connectionId"></param>
+        /// <param name="includeDefaults"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
         Task<IEnumerable<XAiProjectDto>> LoadProjects(
             string ownerId,
             string connectionId = null,
+            bool includeDefaults = false,
             CancellationToken cancellationToken = default
         );
 
@@ -123,6 +126,49 @@ namespace xAiApi.Interfaces
             Guid conversationId,
             CancellationToken cancellationToken = default
         );
+        
+        /// <summary>
+        /// Query Projects ...
+        /// </summary>
+        /// <param name="ownerId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        Task<XQueryResult<XAiProjectDto>> QueryProjects(
+            string ownerId,
+            XQuery query,
+            CancellationToken cancellationToken = default
+        );
+        
+        /// <summary>
+        /// Query Conversations ...
+        /// </summary>
+        /// <param name="ownerId"></param>
+        /// <param name="projectId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        Task<XQueryResult<XAiConversationDto>> QueryConversations(
+            string ownerId,
+            Guid projectId,
+            XQuery query,
+            CancellationToken cancellationToken = default
+        );
+        
+        /// <summary>
+        /// Query Messages ...
+        /// </summary>
+        /// <param name="ownerId"></param>
+        /// <param name="conversationId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        Task<XQueryResult<XAiMessageDto>> QueryMessages(
+            string ownerId,
+            Guid conversationId,
+            XQuery query,
+            CancellationToken cancellationToken = default
+        );
 
         /// <summary>
         /// Create an AI Project ...
diff --git a/Interfaces/IXAiServiceControllerBase.cs b/Interfaces/IXAiServiceControllerBase.cs
index c733f1f..e073f63 100644
--- a/Interfaces/IXAiServiceControllerBase.cs
+++ b/Interfaces/IXAiServiceControllerBase.cs
@@ -1,4 +1,5 @@
 using System;
+using xModels.Dtos;
 using System.Threading;
 using xAiModels.Models;
 using xAiModels.Models.Dtos;
@@ -38,14 +39,16 @@ namespace xAiApi.Interfaces
         #endregion
 
         //
-        #region Data Provided Actions ...
+        #region Loaders ...
         /// <summary>
         /// Retrieve AI Projects ...
         /// </summary>
+        /// <param name="includeDefaults"></param> 
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
         [HttpGet("Projects")]
         Task<ActionResult<IEnumerable<XAiProjectDto>>> LoadProjects(
+            [FromQuery] bool includeDefaults = false,
             CancellationToken cancellationToken = default
         );
 
@@ -72,7 +75,55 @@ namespace xAiApi.Interfaces
             [FromRoute] Guid conversationId,
             CancellationToken cancellationToken = default
         );
+        #endregion
 
+        //
+        #region Queries ...
+        /// <summary>
+        /// Query Projects ...
+        /// </summary>
+        /// <remarks>
+        /// </remarks>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("Projects/Query")]
+        Task<ActionResult<XQueryResult<XAiProjectDto>>> QueryProjects(
+            [FromQuery] XQuery query,
+            CancellationToken cancellationToken = default
+        );
+
+        /// <summary>
+        /// Query Conversations ...
+        /// </summary>
+        /// <param name="projectId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("Projects/{projectId}/Conversations/Query")]
+        Task<ActionResult<XQueryResult<XAiConversationDto>>> QueryConversations(
+            [FromRoute] Guid projectId,
+            [FromQuery] XQuery query,
+            CancellationToken cancellationToken = default
+        );
+
+        /// <summary>
+        /// Query Messages ...
+        /// </summary>
+        /// <param name="conversationId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        [HttpGet("Conversations/{conversationId}/Messages/Query")]
+        Task<ActionResult<XQueryResult<XAiMessageDto>>> QueryMessages(
+            [FromRoute] Guid conversationId,
+            [FromQuery] XQuery query,
+            CancellationToken cancellationToken = default
+        );
+        #endregion
+
+        //
+        #region Creators ...
         /// <summary>
         /// Create an AI Project ...
         /// </summary>
@@ -98,7 +149,10 @@ namespace xAiApi.Interfaces
             [FromBody] XAiConversationDto item,
             CancellationToken cancellationToken = default
         );
+        #endregion
 
+        //
+        #region Data Actions ...
         /// <summary>
         /// Ask Question and Get Response ...
         /// </summary>
diff --git a/Providers/XAIServiceBase.cs b/Providers/XAIServiceBase.cs
index 63acec0..30092fe 100644
--- a/Providers/XAIServiceBase.cs
+++ b/Providers/XAIServiceBase.cs
@@ -2,6 +2,7 @@ using System;
 using OpenAI;
 using OllamaSharp;
 using System.Linq;
+using xModels.Dtos;
 using System.Net.Http;
 using System.Threading;
 using xAiApi.Constants;
@@ -352,11 +353,13 @@ namespace xAiApi.Providers
         /// </summary>
         /// <param name="ownerId"></param>
         /// <param name="connectionId"></param>
+        /// <param name="includeDefaults"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
         public async Task<IEnumerable<XAiProjectDto>> LoadProjects(
             string ownerId,
             string connectionId = null,
+            bool includeDefaults = false,
             CancellationToken cancellationToken = default
         )
         {
@@ -377,42 +380,50 @@ namespace xAiApi.Providers
             );
 
             //
-            // Here we have to fill Conversations of Default Project ...
-            var defaultProjectId = result.GetDafualtProject(ownerId);
-            var defaultProject = result.FirstOrDefault(x => x.Id == defaultProjectId);
-            result = result.Where(x => x.Id != defaultProjectId);
+            // Handle Defaults Including ...
+            if (includeDefaults)
+            {
+                //
+                // Here we have to fill Conversations of Default Project ...
+                var defaultProjectId = result.GetDafualtProject(ownerId);
+                var defaultProject = result.FirstOrDefault(x => x.Id == defaultProjectId);
+                result = result.Where(x => x.Id != defaultProjectId);
 
-            //
-            // Reading Conversations of Specified Default Project ...
-            var defaultProjectConversations = await dataProvider.LoadConversations(
-                fillMessages: false,
-                connectionId: connectionId,
-                projectId: defaultProjectId,
-                cancellationToken: cancellationToken
-            );
-            var defaultConversationId = defaultProjectConversations.GetDefaultConversation(
-                ownerId: ownerId,
-                projectId: defaultProjectId
-            );
-            var defaultConversation = defaultProjectConversations.First(x => x.Id == defaultConversationId);
-            defaultProjectConversations = defaultProjectConversations.Where(x => x.Id != defaultConversationId);
+                //
+                // Reading Conversations of Specified Default Project ...
+                var defaultProjectConversations = await dataProvider.LoadConversations(
+                    fillMessages: false,
+                    connectionId: connectionId,
+                    projectId: defaultProjectId,
+                    cancellationToken: cancellationToken
+                );
+                var defaultConversationId = defaultProjectConversations.GetDefaultConversation(
+                    ownerId: ownerId,
+                    projectId: defaultProjectId
+                );
+                var defaultConversation = defaultProjectConversations.First(x => x.Id == defaultConversationId);
+                defaultProjectConversations = defaultProjectConversations.Where(x => x.Id != defaultConversationId);
 
-            //
-            // Reading Default Conversations Messages ...
-            var defaultConversationMessages = await dataProvider.LoadMessages(
-                cancellationToken: cancellationToken,
-                conversationId: defaultConversationId
-            );
+                //
+                // Reading Default Conversations Messages ...
+                var defaultConversationMessages = await dataProvider.LoadMessages(
+                    cancellationToken: cancellationToken,
+                    conversationId: defaultConversationId
+                );
 
-            //
-            defaultConversation.Messages = [.. defaultConversationMessages];
-            defaultProjectConversations = [defaultConversation, .. defaultProjectConversations];
-            result = [defaultProject, .. result];
+                //
+                defaultConversation.Messages = [.. defaultConversationMessages.OrderByDescending(m => m.CreatedOn)];
+                defaultProjectConversations = [defaultConversation, .. defaultProjectConversations];
+                defaultProject.Conversations = [.. defaultProjectConversations];
+                result = [defaultProject, .. result];
+            }
 
             //
             return result;
         }
 
+
+
         /// <summary>
         /// Load Conversations of Specified AI Project ...
         /// </summary>
@@ -470,7 +481,7 @@ namespace xAiApi.Providers
             );
 
             //
-            return result;            
+            return result;
         }
 
         /// <summary>
@@ -647,6 +658,7 @@ namespace xAiApi.Providers
                 Role = XAiChatRole.User,
                 CreatedOn = DateTime.UtcNow,
                 ConversationId = conversationId,
+                ConversationTitle = conversation.Title
             };
             promptMessage = await dataProvider.AddMessage(
                 item: promptMessage,
@@ -678,9 +690,10 @@ namespace xAiApi.Providers
             {
                 Content = answer,
                 OwnerId = ownerId,
-                Role = XAiChatRole.System,
                 CreatedOn = DateTime.UtcNow,
-                ConversationId = conversationId
+                Role = XAiChatRole.Assistant,
+                ConversationId = conversationId,
+                ConversationTitle = conversation.Title
             };
             result = await dataProvider.AddMessage(
                 item: result,
@@ -891,6 +904,149 @@ namespace xAiApi.Providers
         }
         #endregion
 
+        //
+        #region Query ...        
+        /// <summary>
+        /// Query Projects ...
+        /// </summary>
+        /// <param name="ownerId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public async Task<XQueryResult<XAiProjectDto>> QueryProjects(
+            string ownerId,
+            XQuery query,
+            CancellationToken cancellationToken = default
+        )
+        {
+            //
+            // Validate ...
+            if (ownerId.IsNullOrEmpty())
+            {
+                XException.InvalidArgs.Throw();
+            }
+
+            //
+            var result = await dataProvider.QueryProjects(
+                query: query,
+                ownerId: ownerId,
+                cancellationToken: cancellationToken
+            );
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Query Conversations ...
+        /// </summary>
+        /// <param name="ownerId"></param>
+        /// <param name="projectId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public async Task<XQueryResult<XAiConversationDto>> QueryConversations(
+            string ownerId,
+            Guid projectId,
+            XQuery query,
+            CancellationToken cancellationToken = default
+        )
+        {
+            //
+            // Validate ...
+            if (ownerId.IsNullOrEmpty() ||
+                projectId.IsDefaultGuid())
+            {
+                XException.InvalidArgs.Throw();
+            }
+
+            //
+            // Retrieve Project ...
+            var project = await dataProvider.GetProject(
+                id: projectId,
+                fillConversations: false,
+                fillConversationMessages: false,
+                cancellationToken: cancellationToken
+            );
+            if (project.IsNullOrDefault())
+            {
+                XException.NotFound.Throw();
+            }
+
+            //
+            // Validate Owner ...
+            if (ownerId != project.OwnerId)
+            {
+                XException.NotAllowed.Throw();
+            }
+
+            //
+            var result = await dataProvider.QueryConversations(
+                query: query,
+                ownerId: ownerId,
+                projectId: projectId,
+                cancellationToken: cancellationToken
+            );
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Query Messages ...
+        /// </summary>
+        /// <param name="ownerId"></param>
+        /// <param name="conversationId"></param>
+        /// <param name="query"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public async Task<XQueryResult<XAiMessageDto>> QueryMessages(
+            string ownerId,
+            Guid conversationId,
+            XQuery query,
+            CancellationToken cancellationToken = default
+        )
+        {
+            //
+            // Validate ...
+            if (ownerId.IsNullOrEmpty() ||
+                conversationId.IsDefaultGuid())
+            {
+                XException.InvalidArgs.Throw();
+            }
+
+            //
+            // Retrieve Conversation ...
+            var conversation = await dataProvider.GetConversation(
+                id: conversationId,
+                fillMessages: false,
+                cancellationToken: cancellationToken
+            );
+            if (conversation.IsNullOrDefault())
+            {
+                XException.NotFound.Throw();
+            }
+
+            //
+            // Validate Owner ...
+            if (ownerId != conversation.OwnerId)
+            {
+                XException.NotAllowed.Throw();
+            }
+
+            //
+            var result = await dataProvider.QueryMessages(
+                query: query,
+                ownerId: ownerId,
+                conversationId: conversationId,
+                cancellationToken: cancellationToken
+            );
+
+            //
+            return result;
+        }
+        #endregion
+
         /// <summary>
         /// Base Dispose Action ...
         /// </summary>
@@ -916,49 +1072,45 @@ namespace xAiApi.Providers
             //
             var result = new List<ChatMessage>();
 
+            //
+            // Retrieve Introduction Prompt ...
+            var introductionPrompt = configuration.GetPrompt(XAiApiConstants.XAiApiIntroductionPromptName);
+            if (introductionPrompt.IsNullOrEmpty())
+            {
+                XException.InvalidData.Throw();
+            }
+
+            //
+            var introductionMessage = new ChatMessage(
+                role: ChatRole.System,
+                content: introductionPrompt
+            );
+
+            //
+            result.Add(introductionMessage);
+
+            //
+            if (!project.IsNullOrDefault() &&
+                !project.Prompt.IsNullOrEmpty())
+            {
+                //
+                // TODO: Handle Project Files Here ...
+                var projectMessage = new ChatMessage(
+                    role: ChatRole.System,
+                    contents: [new TextContent(project.Prompt)]
+                );
+                result.Add(projectMessage);
+            }
+
             //
             if (messages.HasChild())
             {
                 //
-                // if Messages Has Child, this means 
-                // Default Messages Handled before ...
-                result = [.. messages.Select(m => m.ToChatMessages())];
-            }
-            else
-            {
-                //
-                // If Message Has not any Childs, this means 
-                // First Asking Questions ...
-
-                //
-                // Retrieve Introduction Prompt ...
-                var introductionPrompt = configuration.GetPrompt(XAiApiConstants.XAiApiIntroductionPromptName);
-                if (introductionPrompt.IsNullOrEmpty())
-                {
-                    XException.InvalidData.Throw();
-                }
-
-                //
-                var introductionMessage = new ChatMessage(
-                    role: ChatRole.System,
-                    content: introductionPrompt
-                );
-
-                //
-                result.Add(introductionMessage);
-
-                //
-                if (!project.IsNullOrDefault() &&
-                    !project.Prompt.IsNullOrEmpty())
-                {
-                    //
-                    // TODO: Handle Project Files Here ...
-                    var projectMessage = new ChatMessage(
-                        role: ChatRole.System,
-                        contents: [new TextContent(project.Prompt)]
-                    );
-                    result.Add(projectMessage);
-                }
+                // TODO: Here we can Implement Memory Management based on 
+                // Last nth of Messages, or Summarization of Messages, etc ...
+                result = [..result, ..messages
+                    .OrderBy(m => m.CreatedOn)
+                    .Select(m => m.ToChatMessages())];
             }
 
             //