I'm wanting to use this plugin in conjucation with Tebex. Do kit give and remove console commands exist so that i can allow a player to purchase a kit for X amount of time and then have Tebex remove it. 
I'm guessing it could be done via groups, but having a give and remove command might be simplier....or am i missing something.

Many Thanks

Ah nevermind, i've been an idiot. You'd do it with permissions;

oxide.grant user <player> kit.pookie
oxide.revoke user <player> kit.pookie