MCLLM

MCLLM

MCLLM is a fork of MCChatGPT for players who want to use non-OpenAI LLM servers. You are not locked into OpenAI's service and can use alternatives like DeepSeek, Claude, Gemini, among others.

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fabricforgeneoforgeutility
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Screenshots

Ask LLM

About this Mod

MCLLM

If you like this project, please consider giving it a ⭐ on GitHub!

This is a fork of MCChatGPT.
Unlike the original, the base URI is no longer hardcoded—you can now configure it via a file, making it compatible with nearly any LLM service, not just OpenAI.

How to Use

  1. Download the JAR file compatible with your Minecraft version from Modrinth or GitHub, and place it in your mods folder.
    (Make sure the appropriate mod loader is installed.)

  2. Download the required dependencies from the same source and also place them in the mods folder.
    (They are usually listed on the Modrinth.)

    • Supported platforms: Fabric (>= 1.20.1), Forge (1.19.4–1.20.1), and NeoForge (>= 1.21.1)
  3. Launch the game once to generate the configuration file.

  4. Open config/mcllm.json and edit the following fields:

    • baseurl: Set this to the endpoint of your preferred LLM service, e.g. https://api.deepseek.com/v1
    • model: Specify the model name, e.g. deepseek-chat
  5. Re-launch the game, then run:
    /mcllm-auth YourToken
    This securely stores your token (it will be encrypted in the config file).

  6. Use /ask YourQuestion to send a message to the LLM.
    The LLM’s reply will appear in your local chat—only you can see it.

example use

Available Versions

MCLLM 1.4.0release
MC 26.1.2neoforge
June 4, 2026
MCLLM 1.4.0release
MC 26.1.2fabric
June 4, 2026
MCLLM 1.3.0release
MC 1.21.11neoforge
March 8, 2026
MCLLM 1.3.0release
MC 1.21.11fabric
March 8, 2026
MCLLM 1.2.1release
MC 1.21.5fabric
March 8, 2026

How to Install MCLLM on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1.2).

3

Install Mod

Open the mod browser in the dashboard and search for "MCLLM". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

26.1.2, 1.21.11, 1.21.5 (+3 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

MCLLM server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is MCLLM compatible with fabric and forge and neoforge?

MCLLM officially supports fabric, forge, neoforge for Minecraft 26.1.2, 1.21.11, 1.21.5. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with MCLLM – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MCLLM consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install MCLLM with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU General Public License v3.0 or later
Server-side
Unsupported

Supported Versions

26.1.21.21.111.21.51.21.11.20.11.19.4