diff --git a/RefactorPlan b/RefactorPlan
index 555b7463..cb0aa109 100644
--- a/RefactorPlan
+++ b/RefactorPlan
@@ -79,3 +79,7 @@ used. (see remove_unused_attributes.patch)
 * Add more models like cmake
 * Maybe? Get rid of functional logic, switch to OO one
 * ActionsAPI still needs an updated API document
+
+==> PiSi API
+
+* Write a real one