Renaming with a Packet

I would like to rename an item in a player's inventory with packets, so as not to modify their actual inventory server-side. Which packet should I use and how should I use it for renaming

 

Take a look at ItemRenamer - it should give you an idea of how to do this.

 

That looks like it listens to and modifies packets; I need to send packets!

 

Just call "updateInventory".

But yes, you can send a packet manually as well. Look up Packet103SetSlot - for ProtocolLib, you can use this wrapper class (slot indexes are explained here):

Code:java

 
Packet67SetSlot updateSlot = new Packet67SetSlot();
updateSlot.setWindowID(0); // player inventory
updateSlot.setSlot(36);
updateSlot.setSlotData(new ItemStack(Material.GOLD_AXE, 1));
ProtocolLibrary.getProtocolManager().sendServerPacket(player, updateSlot);