diff --git a/paw/stos/head/arch/amd64/idt.h b/paw/stos/head/arch/amd64/idt.h
new file mode 100644
index 0000000..753e776
--- /dev/null
+++ b/paw/stos/head/arch/amd64/idt.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: Interrupt gate management
+ * Author:      Chloe M.
+ */
+
+#ifndef _MACHINE_IDT_H_
+#define _MACHINE_IDT_H_ 1
+
+#define IDT_INT_GATE    0x8E
+#define IDT_TRAP_GATE   0x8F
+#define IDT_USER_GATE   0xEE
+
+#endif  /* !_MACHINE_IDT_H_ */