diff --git a/Constants/XAiServiceConstants.cs b/Constants/XAiServiceConstants.cs
new file mode 100644
index 0000000..ace3e06
--- /dev/null
+++ b/Constants/XAiServiceConstants.cs
@@ -0,0 +1,16 @@
+namespace xAiService.Constants
+{
+    public struct XAiServiceConstants
+    {
+        //
+        // Service Extensions Log Tag ...
+        public const string XAiServiceDILogTag = "XAiService";
+        
+        //
+        // File Provider Identifiers ...
+        public const string XAiProjectFilesIdentifier = "AiPrjF";
+        public const string XAiMessageFilesIdentifier = "AiMsgF";
+        public const string XMetaDataFileIdsIdentifier = "FileIds";
+        public const string XAiConversationFilesIdentifier = "AiCnvrF";
+    }
+}
\ No newline at end of file
diff --git a/xAiService.csproj b/xAiService.csproj
index 50895b1..44d189d 100644
--- a/xAiService.csproj
+++ b/xAiService.csproj
@@ -26,6 +26,7 @@
   <!-- Local Projects -->
   <ItemGroup>
     <ProjectReference Include="..\xAiModels\xAiModels.csproj" />
+    <ProjectReference Include="..\xFileService\xFileService.csproj" />
   </ItemGroup>
 
   <!-- Local Modules -->