This datapack for Minecraft 1.21.1 Java Edition enhances villager behavior by enabling them to automatically create farmlands when near a composter.

Villagers check every 5 seconds to see if they can replace dirt, sand, or gravel under them with farmland, provided the composter is in range. To ensure better performance, the system updates every second, rather than constantly.

Key Features:

Composters create waterlogged spruce slabs underneath, which hydrate nearby farmland. Decorative elements like a trapdoor on top and an iron shovel inside the composter allow easy identification of functional composters. To prevent crop damage, villagers receive a temporary feather falling effect when falling from a composter.

In addition, villagers get one-time seeds when taking over a composter (2xWheat seeds, 1xBeetroot seeds, 1xPotato, 1xCarrot)

Installation:

The datapack requires no special setup—just add it to your game, and it will start working. If for some reason it doesn't work immediately, use the /reload command.

Additional Details:

When villagers claim a composter, the blocks above and below it will be replaced, but these can be manually removed later if necessary. Destroying a composter automatically removes the decorative trapdoor and turns the block beneath it back into dirt.