ModsFinder

Auto Builder

by quillphen

Auto Builder is a Fabric, Forge, NeoForge and Quilt mod in which a player who jumps and sneaks at once places a held block while walking forward.

FabricForgeNeoForgeQuiltServer required, client optionalGNU Affero General Public License v3.0 only1.16 – 1.21.11

What it does

The mod lets the player lay down a block on each step forward, so a row, floor or wall can be built without placing blocks one at a time. The block to place comes from the player's hand, and the placing is triggered by a jump and sneak pressed together. The feature is aimed at building large flat areas and repeated patterns quickly.

Blocks that work with the mod include stone, cobblestone, netherrack and end stone, all wood planks from oak to dark oak, dirt and grass blocks, sandstone and red sandstone, quartz blocks, and white and black concrete. Any block the player can hold in the hand can be placed this way.

The server side runs the placing, so the server is required and the client is optional. Players on a server that runs the mod do not need it installed to be connected. The mod is also available as a data pack for servers that do not use a mod loader. It is released under the GNU Affero General Public License v3.0 only and is not open source. Files cover 1.16 – 1.21.11 across 35 release versions, with snapshot builds published.

Key features

  1. Walking placement

    Each step forward places the held block, so long lines and floors are laid down while the player walks.

  2. Jump and sneak trigger

    Pressing jump and sneak together starts the placing, keeping the controls simple during building.

  3. Natural and decorative blocks

    Stone types, wood planks, sandstone, quartz and concrete are all placeable with the mod.

  4. Hand-held block choice

    The block placed is the one held in the player's hand, so switching blocks takes a single item swap.

Compatibility

Latest build for each game version and loader.

1.21.x12 of 12 versions with builds
1.21.111.0+mod1.0+mod1.0+mod1.0+mod
1.21.101.0+mod1.0+mod1.0+mod1.0+mod
1.21.91.0+mod1.0+mod1.0+mod1.0+mod
1.21.81.0+mod1.0+mod1.0+mod1.0+mod
1.21.71.0+mod1.0+mod1.0+mod1.0+mod
1.21.61.0+mod1.0+mod1.0+mod1.0+mod
1.21.51.0+mod1.0+mod1.0+mod1.0+mod
1.21.41.0+mod1.0+mod1.0+mod1.0+mod
1.21.31.0+mod1.0+mod1.0+mod1.0+mod
1.21.21.0+mod1.0+mod1.0+mod1.0+mod
1.21.11.0+mod1.0+mod1.0+mod1.0+mod
1.211.0+mod1.0+mod1.0+mod1.0+mod
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x6 of 6 versions with builds
ReleaseBetaAlphaNot available

This mod also publishes snapshot builds. Snapshots are not shown in the matrix.

Use cases

Who it’s for: Players who build large structures in survival or creative worlds, and server owners who want placing handled by the server.

How it compares

Full comparison

Smelt All Stone Blocks in Blast Furnaces is open source under the MIT License and runs on Fabric, Forge, NeoForge and Quilt for 1.16 – 26.2, with the server required and the client optional. Eroding Stone Entities is server-side only, released under All rights reserved and covers 1.16.5 – 26.3, so players join without installing anything. Auto Builder adds walking placement rather than smelting or stone entities, and its files are not open source.

ModLoadersGame versionsEnvironmentUpdated
Auto BuilderFabric, Forge, NeoForge and Quilt1.16 – 1.21.11Server required, client optional2026-02-25
Smelt All Stone Blocks in Blast FurnacesFabric, Forge, NeoForge and Quilt1.16 – 26.2Server required, client optional2026-09-04
Eroding Stone EntitiesFabric, Forge, NeoForge and Quilt1.16.5 – 26.3Server-side only2026-10-02

Questions

Does Auto Builder need to be installed on the client?

No. The server must run it, while players may leave it out.

Which loaders does Auto Builder support?

Fabric, Forge, NeoForge and Quilt. A data pack version is also available for servers without a mod loader.

Which Minecraft versions are covered?

Files cover 1.16 – 1.21.11 with 35 release versions, and the latest file for each loader is 1.0+mod for 1.21.11.

In the catalog

Auto Builder is one of 3,932 Transportation mods on ModsFinder, and one of 2,390 Transportation mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Transportation mods3,932Fabric modsMods for 1.21.1119,862

More from quillphen

All projects
Tree Vein Miner1.16 – 26.3Ore Vein Miner1.16 – 26.3Vein Miner1.16.1 – 26.3Dynamic Lighting1.17 – 26.2Night Vision1.16 – 1.21.11Enchantment Descriptions Java1.14 – 1.21.9

Similar mods

Xaero's Minimap1.7.10 – 26.3Carry On1.12.2 – 26.3Waystones1.16.5 – 26.3InvMove1.16 – 26.3Immersive Aircraft1.16.5 – 26.2Elytra Slot1.13.2 – 1.21.5

What the author says

How to use jump and sneak at the same time when you have a placeable block in you hand Placeable Blocks >>> - Stone, Cobblestone, Netherrack, End Stone - All Wood Planks (Oak, Spruce, Birch, Jungle, Acacia, Dark Oak) - Dirt, Grass Block - Sandstone, Red Sandstone - Glass - Bricks - Quartz Block - Terracotta - White…
quillphen, on the Modrinth page

Official listing

Owner
quillphen
Published
2025-11-09
Updated on Modrinth
2026-02-25
Facts verified
2026-10-15

Tags

Game mechanicsTransportationUtility
Open on ModrinthCompare