diff --git a/lib/cocoa/TProcessor.h b/lib/cocoa/TProcessor.h
new file mode 100644
index 0000000..01b2a61
--- /dev/null
+++ b/lib/cocoa/TProcessor.h
@@ -0,0 +1,9 @@
+#import <Cocoa/Cocoa.h>
+
+
+@protocol TProcessor <NSObject>
+
+- (BOOL) processOnInputProtocol: (id <TProtocol>) inProtocol
+                 outputProtocol: (id <TProtocol>) outProtocol;
+
+@end