diff --git a/mx-interpreter/types/logic.ts b/mx-interpreter/types/logic.ts
new file mode 100644
index 00000000..5d06abbe
--- /dev/null
+++ b/mx-interpreter/types/logic.ts
@@ -0,0 +1,5 @@
+export const unaryOperators = ['$not'] as const;
+export const naryOperators = ['$and', '$or'] as const;
+
+export const operators = [...unaryOperators, ...naryOperators] as const;
+export const meta = ['$before', '$after'] as const;
\ No newline at end of file