diff --git a/libmapper/mapper.h b/libmapper/mapper.h
new file mode 100644
index 0000000..58f1844
--- /dev/null
+++ b/libmapper/mapper.h
@@ -0,0 +1,9 @@
+#include <systemd/sd-bus.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+int mapper_get_service(sd_bus *conn, const char *obj, char **service);
+#ifdef __cplusplus
+}
+#endif