Source-checkedWorld generation

BuildGPT

by Jonas_Jones · for Minecraft

A simple mod that uses ChatGPT to generate structures on command with /buildgpt

13KDownloads
7 mo agoLast updated
CC0-1.0License
Fabric · QuiltLoaders

About BuildGPT

From Modrinth

A simple mod that uses ChatGPT to generate structures on command with /buildgpt

This mod adds a /buildgpt command that allows the player to place AI generated structures into the world with a customizable prompt.

Setup

An OpenAI Key is required for this mod in order to work.

create a file .openaikey in the config folder or run the /buildbpt command with valid parameters once to generate the file and then place your API Key in there.

The command should now work!

_Additionally The API Key requires account credits on OpenAI!_

Command

The command has 2 modes:

Bound

/buildgpt bound <x> <y> <z> <x> <y> <z> <prompt> This mode allows the user to set a bounding box outside of which the mod won't place any blocks.

The prompt is directing ChatGPT to generate a structure within those bounds but the mod also has a check after the response, that filters out any blocks outside the bounding box.

Unbound

/buildgpt unbound <x> <y> <z> <prompt> This mode only has a starting point from which the AI will (in most cases) generate the structure towards increasing coordinates.

Of course this is not always the case as ChatGPT can sometimes return funny responses with unexpected behaviour, which is why the bound mode exists and the unbound mode should by used with caution, since placed blocks cannot be undone. During testing, I noticed that structures will usually not exceed a 20x20x20 block cube unless prompted to do otherwhise.

Prompt

There is a predefined prompt in the Mod, meaning that the user is only required to input the building name or description into the <prompt> field of the command, since the mod requires the response to be formatted a certain way.

The prompt can also be overwritten by inputting a custom prompt into the <prompt> field of the command.

Highlights

From source data

Game versions

Supports 32 Minecraft versions, the newest being 26.2.

Loaders

Runs on Fabric and Quilt.

Footprint

Rated a light load on a server.

BuildGPT on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Fabric, Quilt
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
1.1.0-26.x, released 2026-04-12

Game versions by loader

LoaderGame versionsNewest
Fabric1.21.3 to 26.2 (13 versions)26.2
Quilt1.21.3 to 26.2 (13 versions)26.2

From 5 recorded builds of BuildGPT.

Recent builds

BuildReleasedGame versionsLoaders
1.1.0-26.x2026-04-1226.1 to 26.2 (4 versions)Fabric, Quilt
1.1.0-1.21.x2026-04-121.21.3 to 1.21.11 (9 versions)Fabric, Quilt
1.0.2.12026-03-301.21.3 to 1.21.11 (9 versions)Fabric, Quilt
1.0.32026-03-3026.1Fabric, Quilt
1.0.22025-12-301.21.3 to 1.21.11 (9 versions)Fabric, Quilt

Run BuildGPT on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

World generation

Changes or adds to how new terrain, biomes and structures are created.

Runs on your server

From source side support

Modrinth lists BuildGPT as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
FabricQuilt
Runs on
Serverrequired on the server
Game versions
26.2 and 31 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-02Open ↗
  • ✓AuthorJonas_Jones, as published on Modrinth
  • ✓LicenseCC0-1.0Free

BuildGPT, answered

Generated from the mod’s own source data.

Do my players need to install BuildGPT?

Modrinth lists BuildGPT as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Fabric and Quilt.

Is it free?

Yes. BuildGPT is free to download from Modrinth. Its license is CC0-1.0.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run BuildGPT on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add BuildGPT in one click.