Stable Foundation

Protected blocks take several breaks before they finally break, because each attempt to break one lowers its protection by one until none is left. How much protection a block gets depends on the custom item used to apply it, and the item's protection value is read from a set of fields that sets a minimum and a maximum. Applying a protection item is optional, and an existing protection value can only be raised within the range the item allows.

The protected block otherwise behaves like a normal block. Explosions, pistons and players can all interact with it, and it is only the break time that changes. Data packs and other mods can add their own protection items through the custom data component format, so the values are not limited to the ones shipped with the mod. Stable Foundation is a serverside mod that uses its own data, so it runs on client and server and is published for Fabric only.

The mod is in Alpha, and the author expects bugs. Files exist for 26.2 and 26.3, with 26.3-0.0.1 for 26.3 as the latest. The code is open source under the MIT License, and the idea is heavily inspired by the CivCraft Bastion mechanic.