diff --git a/CMakeLists.txt b/CMakeLists.txt
index c94db5c..6c695a3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@ project(solanaceae)
 add_library(solanaceae_toxcore_interface INTERFACE
 	#./solanaceae/toxcore/toxcore_enums.hpp
 	#./solanaceae/toxcore/tox_interface.hpp
+	#./solanaceae/toxcore/tox_private_interface.hpp
 )
 target_include_directories(solanaceae_toxcore_interface INTERFACE .)
 target_compile_features(solanaceae_toxcore_interface INTERFACE cxx_std_17)
@@ -20,6 +21,7 @@ add_library(solanaceae_toxcore
 	./solanaceae/toxcore/tox_interface.hpp
 	./solanaceae/toxcore/tox_interface.cpp
 	./solanaceae/toxcore/tox_event_interface.hpp
+	./solanaceae/toxcore/tox_private_interface.hpp
 
 	./solanaceae/toxcore/tox_default_impl.hpp
 	./solanaceae/toxcore/tox_default_impl.cpp
diff --git a/solanaceae/toxcore/tox_private_interface.hpp b/solanaceae/toxcore/tox_private_interface.hpp
new file mode 100644
index 0000000..29add51
--- /dev/null
+++ b/solanaceae/toxcore/tox_private_interface.hpp
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <cstdint>
+
+// defines the private interface for tox
+struct ToxPrivateI {
+	virtual ~ToxPrivateI(void) {}
+
+	virtual uint16_t toxDHTGetNumCloselist(void) = 0;
+	virtual uint16_t toxDHTGetNumCloselistAnnounceCapable(void) = 0;
+};
+