ModsFinder

The Arbiter (AI God)

by ErrorDan

The Arbiter is a Fabric mod that adds an AI entity which watches the player, records kills, builds, deaths and interactions, and reacts to them.

FabricClient and serverAll rights reserved1.19.4 – 1.21.1

What it does

Once installed, an observing entity called the Arbiter tracks what the player does in the world. Kills, builds, deaths and other interactions feed a karma reputation, which shifts the player toward Blessed or Damned depending on how they play. The Arbiter keeps a memory of this history, so its later reactions, whether mocking or praising, depend on what came before.

Players talk to the Arbiter directly through an Altar. The mod uses a local large language model run through Ollama, with llama3 named as the model, so the Arbiter judges actions and answers in text rather than from a fixed script. Over ten distinct events can be triggered, ranging from gifting items to extreme punishments such as a void pull or lightning strikes on structure spawns.

The mod is client and server, so the server and every player need it. It runs on Fabric Loader and requires Fabric API. Files are published for three game versions, 1.19.4, 1.20.1 and 1.21.1, with 1.0.0 for 1.21.1 as the latest build, and the code is under All rights reserved.

Key features

  1. Karma reputation

    Kills, builds, deaths and interactions push the player's karma up or down, toward the Blessed or Damned side.

  2. Altar conversation

    Players speak to the Arbiter through an Altar, and its replies are generated from the world state and the player's history.

  3. Ascension path

    Players whose karma climbs high enough can ascend, then pick either the Monk or the Angel path.

  4. Damnation path

    Low karma leads toward forbidden arts, a Book of Satan and eternal torment in specialized hell dimensions.

  5. Scripted world events

    More than ten events can fire, from gifts to punishments such as lightning strikes and void pulls on structure spawns.

Compatibility

Latest build for each game version and loader.

1.21.11.0.0
1.20.11.0.0
1.19.41.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Single-player moral play

A player can follow the karma path to see how the Arbiter reacts to a chosen style of play across a single world.

Who it’s for: Players who want a world that reacts to their choices and server owners who want a shared AI judge in their multiplayer world. The mod needs a local Ollama install with llama3 for the language model features.

Questions

Does The Arbiter need Fabric API?

Yes. Fabric API is required, and the mod runs on Fabric Loader only.

Do servers and players both need the mod?

Yes. Servers that run it need every player to install it too.

What is needed for the AI replies?

The Arbiter uses a local Ollama install running llama3, which the player or server owner sets up separately from the mod.

In the catalog

The Arbiter (AI God) is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 32,366 mods support Minecraft 1.21.1.

More from ErrorDan

All projects

Similar mods

What the author says

The Arbiter is AI entity that observes your every move. Using local LLM (Ollama, llama3), the Arbiter judges your actions, talks to you through an Altar, and makes your world based on your choices.
ErrorDan, on the Modrinth page

Official listing

Owner
ErrorDan
Published
2026-01-19
Updated on Modrinth
2026-01-19
Facts verified
2026-10-15

Tags