Farmstead AI Builder

Type it. Watch it rise.

Farmstead AI Builder turns a sentence into a building. A player types /aibuild create a medieval tavern with a porch, and a couple of minutes later a hologram of that tavern hangs under their crosshair. They carry it to the right spot, turn it to face the road, confirm, and the tavern is laid in front of them course by course, from the ground up.

Every build is planned for its own prompt: not a pre-made schematic with another texture. A fishing hut on stilts and a stone tower with a flag come out as two different buildings. Houses, castles, ships, bridges, farms, whole harbours, even trees and statues.

For NeoForge 1.21.1 servers. The same jar on players' clients draws the hologram and the build animation; players without it can still join.

Uses generative AI. Builds are generated by the Farmstead AI service (ai.farmsteadminecraft.online), the mod places them. Generation is paid with AI tokens from the server owner's account on farmsteadminecraft.online; a build usually costs 200–600 tokens. The service receives the build description and the requesting player's UUID and nickname, nothing else.

✦ See it

A castle rises out of its hologram	A galleon in its own dock
A timber tavern, course by course	A whole harbour from one prompt
Not only buildings: a sakura garden	A windmill, sails and all
Aim the hologram, turn it with R	Every step told in chat, clickable

What makes it different

• Text to build. Describe it in plain words, English or Russian. The structure is planned for that prompt, at the size it needs.
• A hologram first. Nothing touches the world until the player agrees. The build follows the crosshair as a ghost: R rotates, LMB or Enter places, RMB or Backspace cancels.
• Built in front of you. Blocks go down course by course from the ground up, with a glowing front and a beam from above. A few milliseconds per tick: the server never stalls.
• Generate into a region. /aibuild area marks two corners in the world, and the build is planned to fit that volume, not cut down to it.
• Full undo. The mod remembers what stood underneath. /aibuild undo brings back the trees, the slope and the road exactly, for the last build or any earlier one.
• A library per player. /aibuild list shows your builds, /aibuild get <key> places one again, anywhere, facing any way, for free.
• Respects land claims. With RegionGuard or Farmstead Claims installed, a build must fit inside the player's claim; a refusal shows the size and the corners to claim.

For the server owner

• You control the spend. A daily cap for the server, a cap per player, personal caps and bans, pause and cooldown, a who-spent-what report. All in the web cabinet, applied instantly, no restart.
• No GPU, no AI keys. Models, prompts and compute live on the Farmstead service; your server only places blocks.
• LuckPerms ready. Every command opens by a permission level in the config or by its aibuilder.command.* node; the nodes are registered with the NeoForge Permission API, so LuckPerms sees them on its own.
• Talks in each player's language. Chat follows every player's game language (English or Russian), or one language pinned in the config.
• Tells you what is going on. A console line for every generation, a startup check of the token, /aibuild status for operators, a note on join when a new version is out.

Commands

Setup in four steps

1. Drop the jar into the server's mods/ and hand the same file to your players.
2. Start the server once: config/farmstead_aibuilder.toml appears.
3. Sign in at farmsteadminecraft.online and create a token in the cabinet: farmsteadminecraft.online/cabinet/ai-builder. It starts with fsm_ and is shown once.
4. Paste it into the [api] section as bearer_token = "fsm_..." and restart the server. The log says [Farmstead] AI service OK.

Versions

Java 21. Outbound HTTPS from the server to ai.farmsteadminecraft.online. Optional: LuckPerms, RegionGuard or Farmstead Claims.

FAQ

Who pays for the builds? The server owner, with AI tokens on farmsteadminecraft.online. Players never pay; you decide how much each of them may spend per day.

Do players need the mod? Recommended, not required. With it they get the aiming hologram and the build animation; without it they can join and use the commands, and the build simply appears in front of them.

Will it lag my server? Generation runs on our service, not on your machine. Placement is spread over ticks at a few milliseconds each.

Can a player build over someone's base? Not with RegionGuard or Farmstead Claims installed: the whole build must fit inside the player's own claim. Without a claims mod, restrict the commands with permission levels or LuckPerms nodes.

Can I use it on a paid server or in a modpack? Yes: install it on your own servers, paid ones included, and hand it to your players, also inside a client modpack for your server. Re-uploading the jar to other sites is not allowed. Full license.

Made by Farmstead · Documentation · Issues · Changelog