Plugin commands:

The base command is /repair. Permission repairItem.* is an universal permissions for all commands. Here's a quick summary (please note that actual commands can be reconfigured, commands in the table are shown by default configuration) :

Command:	Permission:	Description:
/repair all [target]	repair.all / repair.target.all	Repairs all items in your/target's inventory.
/repair inventory [target]	repair.inventory / repair.target.inventory	Repairs inventory items (except armor contents, including both hands) in your/target's inventory.
/repair armor [target]	repair.armor / repair.target.armor	Repairs armor contents in your/target's inventory.
/repair hotbar [target]	repair.hotbar / repair.target.hotbar	Repairs hot-bar items (including both hands) in your/target's inventory.
/repair bothhands [target]	repair.bothhands / repair.target.bothhands	Repairs items in your/target's both hands (off-hand only if supported - server version 1.9 and newer).
/repair mainhand [target]	repair.mainhand / repair.target.mainhand	Repairs items in your/target's main-hand.
/repair offhand [target]	repair.offhand / repair.target.offhand	Repairs items in your/target's off-hand (if supported - server version 1.9 and newer)

[] - optional argument