Locki

Inventory slots are represented as nodes in a tree. A node is written as a dot-separated path, from the least specific ancestor to the most specific child, so inventory describes the whole inventory and inventory.armor.chest describes the chestplate slot. Locking a node also locks every node beneath it, while a descendant that is cleared keeps its lock state separate from its ancestors, which lets a lock cover a broad area and still exclude a single slot.

A lock is applied with the locki command, which takes a target player (by username or selector, defaulting to the player running the command), an inventory node, and an optional lock identifier. Omitting the identifier uses a generic command lock. Locking inventory and then clearing the lock on inventory.armor.chest, for example, stops the player from touching any item except the chestplate. The mod is used standalone through this command, and it has to be installed on both the server and the client for the locks to work properly.

Locki is open source under the GNU Lesser General Public License v3.0 or later, and its source code and issue tracker are public. It is published for Quilt only, in five game versions 1.19.3 – 1.21, and the latest Quilt file is 0.13.0 for 1.21, released on 2024-06-16.