diff --git a/Let's do that.cli.h b/Let's do that.cli.h
new file mode 100644
index 0000000..696fa3f
--- /dev/null
+++ b/Let's do that.cli.h	
@@ -0,0 +1,9 @@
+#ifndef CLI_H
+#define CLI_H
+
+#include "engine.h"
+
+int cli_process_line(Engine *engine, const char *line);
+void cli_run(Engine *engine);
+
+#endif /* CLI_H */