Villager Breeder (Two Automatic Farming Pairs) in Minecraft

Use zero-based model coordinates, with x east, z south, and y upward. Build the two enclosed nursery floors at y=0, walls at y=1..3, roofs at y=4, and four side sea lanterns. Their five-by-five interiors are x=2..6 and 14..18, z=19..23.

💡 Choose a level, well-lit site at least 100 blocks from unrelated villagers, beds, bells, and job sites. The build creates its own village and does not need a generated village. Keep the modeled air spaces empty; do not add beds or workstations to either nursery.

At x=4 and 16, build the raised stone floor at y=1, z=10..18, with glass channel walls. The landing sources will be at (4,2,11) and (16,2,11). Leave the drop at z=19 open above the lower nursery floor.

💡 The channel roof is y=4 from z=13 onward. The openings at z=11 and 12 are the bottoms of the two drop shafts. A child landing in either square must meet water, never exposed stone.

Build the complete one-by-two interior shafts at x=4 and 16, z=11..12, from y=3 through 51. Enclose their four sides, leaving the interiors empty. Add the east service column at (24,y,8) and west-facing ladders at (23,y,8), y=0..55.

💡 The 50-block descent is intentional: nursery villagers remain more than 48 blocks below the upper beds. Keep both ends loaded so children can arrive and later release unreachable bed claims. Temporary scaffolding used during construction must be removed from the finished shaft interiors.

Build the two greenhouse support decks at y=50 and perimeter floors at y=51. Each greenhouse covers x=0..10 or 12..22, z=0..10. Build the enclosed bed-island floors at y=51, x=1..8 or 13..20, z=13..16.

💡 Leave the two open shaft-floor squares at x=4 or 16, z=11..12, completely unsupported. The south greenhouse doorway at z=10 has a solid floor, while z=13 is the bed-island landing.

Hoe 80 dirt blocks in each nine-by-nine field at y=51, excluding the center (5,51,5) or (17,51,5). Put a bottom slab in each center and waterlog it.

💡 Both adult farmers in a module share its 80-plant field. Irrigation slabs prevent falls into the water; use carrots only so harvests supply both planting stock and breeding food.

Build the upper glass walls at y=52..54 and roof at y=55, including both shaft mouths and bed islands. Install the twenty roof sea lanterns and the upward lightning rod at (24,56,8).

💡 Leave both shaft entrances at (4,52,10) and (16,52,10) open. Keep y=53 and 54 above every bed completely air; the roof starts at y=55. Temporarily remove a roof panel for villager loading, then replace it.

Place composters at (5,52,5), (10,52,5), (17,52,5), and (22,52,5). The outer composters replace lower wall glass and remain accessible from the crop side.

💡 Load one unemployed adult at a time during work hours so each claims a separate composter. Use four ordinary adults with carrot-only inventories; nitwits and villagers permanently traded into another profession cannot become these farmers.

Close top-half trapdoors at (4,53,10) and (16,53,10). Open the floor trapdoors at z=11 toward north and z=12 toward south, y=51, for both shafts. Close the two top-half trapdoors above the center composters.

💡 At each exit the solid floor raises feet to y=52, while the top trapdoor underside is y=53.8125: the 1.8125-block opening stops a 1.95-block adult but passes a 0.975-block baby. Use trapdoors, not solid height-filter blocks: the bed-search AI must still regard the route across the open floor trapdoors as traversable.

For the west module, place six south-facing beds at x=2..7, foot z=14 and head z=15, y=52. Repeat at x=14..19 for the east module. Keep the walkway at z=13 and its shaft entrance clear.

💡 Two parents and temporarily claimed baby beds can coexist in each six-bed buffer. Children may retain a claim until normal failed path attempts or the night schedule clears it; separation does not instantly erase a claim. Never freeze daytime or skip the first complete night when commissioning the breeder.

Plant the 160 carrot plots. Reserve 64 additional carrots for each of the four adult farmers, 256 carrots total, to load after the modules are sealed.

💡 Each successful birth consumes 12 food units from each parent. Farmers harvest and replant their own fields and can share surplus with their partner; a new field or uneven inventory can require several work cycles to stabilize.

Place the two landing water sources at (4,2,11) and (16,2,11). Confirm the southbound streams reach z=18, fall at z=19, and spread as shallow water over the lower nursery floors.

💡 Waterlogged irrigation slabs were filled earlier. Test both shaft lanes before admitting villagers; landing water cancels fall damage. No water belongs in the upper crop rooms or dry vertical shafts. Refill or clear any interrupted stream before breeding.

Release two adult farmers into each sealed crop room, four adults total, and give each its own 64-carrot startup stack. Replace all temporary loading panels and remove transport vehicles from the crop rooms.

💡 Commission one module at a time: verify both adults can tend crops and reach separate composters, that adults stay behind the closed top trapdoor, and that a baby paths toward the beds and falls into the water route. This is an original untested arrangement, so do this acceptance check before long AFK sessions.