Blueprint strings

Players mark two opposite corners of a cuboid with the Blueprint Wand, and the mod reads every block inside the selected area, including block states such as stair orientation, slab type and door halves, along with block positions and the structure's dimensions. The selection is exported as a JSON blueprint string that can be saved in notes, sent in chat, stored on a website or in a book, and shared to copy a build to another player.

Importing a blueprint string at a location recreates the entire structure exactly as it was. Before importing, a preview shows the blueprint area, so players can confirm that everything fits. The mod also offers a mode that places blocks instantly, and a survival mode that first generates chests containing the complete list of required items; once those chests are filled with the requested materials, the structure is built automatically according to the blueprint, which adapts to the surroundings.

The mod is a lightweight, vanilla-friendly alternative to complicated machines and giant schematic files. Servers that run it need every player to install it too. Builds exist for 26.2 and 26.3, with 1.0.17 for 26.3 as the latest Fabric file, released under the MIT License. It is not open source.