diff --git a/commands.hpp b/commands.hpp
new file mode 100644
index 0000000..dfe8f29
--- /dev/null
+++ b/commands.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+namespace google
+{
+namespace ipmi
+{
+
+enum SysOEMCommands
+{
+    // The Sys cable check command.
+    SysCableCheck = 0,
+    // The Sys cpld version over ipmi command.
+    SysCpldVersion = 1,
+    // The Sys get eth device command.
+    SysGetEthDevice = 2,
+    // The Sys psu hard reset command.
+    SysPsuHardReset = 3,
+    // The Sys pcie slot count command.
+    SysPcieSlotCount = 4,
+    // The Sys pcie slot to i2c bus mapping command.
+    SysPcieSlotI2cBusMapping = 5,
+    // The Sys "entity id:entity instance" to entity name mapping command.
+    SysEntityName = 6,
+};
+
+} // namespace ipmi
+} // namespace google