diff --git a/Test/X2LogTest.dpr b/Test/X2LogTest.dpr
index 363a00a..a986388 100644
--- a/Test/X2LogTest.dpr
+++ b/Test/X2LogTest.dpr
@@ -24,7 +24,8 @@ uses
   X2Log.Details.Intf in '..\X2Log.Details.Intf.pas',
   X2Log.Util.Stream in '..\X2Log.Util.Stream.pas',
   X2Log.Decorator in '..\X2Log.Decorator.pas',
-  X2Log.Observer.RollingLogFile in '..\X2Log.Observer.RollingLogFile.pas';
+  X2Log.Observer.RollingLogFile in '..\X2Log.Observer.RollingLogFile.pas',
+  X2Log.Intf.NamedPipe in '..\X2Log.Intf.NamedPipe.pas';
 
 {$R *.res}
 
diff --git a/Test/X2LogTest.dproj b/Test/X2LogTest.dproj
index daf79fa..2fc63b0 100644
--- a/Test/X2LogTest.dproj
+++ b/Test/X2LogTest.dproj
@@ -196,6 +196,7 @@
 			<DCCReference Include="..\X2Log.Util.Stream.pas"/>
 			<DCCReference Include="..\X2Log.Decorator.pas"/>
 			<DCCReference Include="..\X2Log.Observer.RollingLogFile.pas"/>
+			<DCCReference Include="..\X2Log.Intf.NamedPipe.pas"/>
 			<RcItem Include="resources\Graphic.jpg">
 				<ResourceType>RCDATA</ResourceType>
 				<ResourceId>GraphicDetails</ResourceId>
diff --git a/X2Log.Client.NamedPipe.pas b/X2Log.Client.NamedPipe.pas
index 2715280..e090e88 100644
--- a/X2Log.Client.NamedPipe.pas
+++ b/X2Log.Client.NamedPipe.pas
@@ -46,6 +46,7 @@ uses
 
   X2Log.Details.Default,
   X2Log.Details.Registry,
+  X2Log.Intf.NamedPipe,
   X2Log.Util.Stream;
 
 
diff --git a/X2Log.Intf.NamedPipe.pas b/X2Log.Intf.NamedPipe.pas
new file mode 100644
index 0000000..73413d7
--- /dev/null
+++ b/X2Log.Intf.NamedPipe.pas
@@ -0,0 +1,37 @@
+unit X2Log.Intf.NamedPipe;
+
+interface
+uses
+  X2Log.Intf;
+
+type
+  TX2LogMessageHeaderV1 = packed record
+    ID: Word;
+    Version: Byte;
+    Size: Word;
+    DateTime: TDateTime;
+    Level: TX2LogLevel;
+
+    {
+    Payload:
+
+      CategoryLength: Cardinal
+      Category: WideString
+      MessageLength: Cardinal
+      Message: WideString
+      DetailsLength: Cardinal
+      Details: WideString
+    }
+  end;
+
+
+  TX2LogMessageHeader = TX2LogMessageHeaderV1;
+
+const
+  X2LogMessageHeader: Word = $B258;
+  X2LogMessageVersion: Byte = 1;
+
+
+implementation
+
+end.
diff --git a/X2Log.Observer.NamedPipe.pas b/X2Log.Observer.NamedPipe.pas
index df8ff9e..673042e 100644
--- a/X2Log.Observer.NamedPipe.pas
+++ b/X2Log.Observer.NamedPipe.pas
@@ -28,6 +28,7 @@ uses
   Winapi.Windows,
 
   X2Log.Details.Registry,
+  X2Log.Intf.NamedPipe,
   X2Log.Util.Stream;