MCLLM
by link-fgfgui
MCLLM lets players connect Minecraft chat to large language models other than OpenAI's service, such as DeepSeek, Claude and Gemini, by changing one configuration file.
What it does
MCLLM is a fork of MCChatGPT. The original mod was locked to OpenAI's service, while this fork reads its endpoint from a configuration file, so the base URI is no longer hardcoded. Players point the mod at the LLM service they prefer, which makes it work with nearly any provider that offers a compatible interface, not only OpenAI.
The setup is short. Launching the game once generates the configuration file, which holds the endpoint and the model name. After editing those two values and restarting the game, players send messages to the model with the ask command and a question. The mod is client-side only, so the server and other players do not need it, and it runs on Fabric, Forge and NeoForge.
Installation needs Architectury API, Fabric Language Kotlin and Kotlin for Forge, plus Fabric API on Fabric. Files cover 1.19.4, 1.20.1, 1.21.1, 1.21.5, 1.21.11 and 26.1.2, with the latest Fabric and NeoForge builds targeting 26.1.2 and the latest Forge build targeting 1.20.1 on the alpha channel. The code is released under the GNU General Public License v3.0 or later and is open source.
Key features
Configurable endpoint
The LLM endpoint is read from a configuration file, so any compatible provider can be selected without a code change.
Configurable model name
The model name is set in the configuration file, letting players choose which model answers their messages.
Ask command
Players send a question to the configured model with the ask command, and the reply appears in chat.
Multiple loaders
Builds exist for Fabric, Forge and NeoForge, so the same configuration approach applies across them.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
How it compares
xkball's Auto Translate is a Forge and NeoForge mod for 1.19.2 – 26.1.2 under the GNU Lesser General Public License v3.0 or later, and it is client-side only. DeepSeek-NeoForge is a NeoForge mod for 1.21.4, released under the MIT License, and it runs server-side only. MineAgent covers Fabric and Forge for 1.20.1 under the GNU Affero General Public License v3.0 only, with client and server environment, and it is open source. MCLLM differs by running client-side only on Fabric, Forge and NeoForge with a configurable endpoint.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MCLLM | Fabric, Forge and NeoForge | 1.19.4 – 26.1.2 | Client-side only | 2026-06-04 |
| xkball's Auto Translate | Forge and NeoForge | 1.19.2 – 26.1.2 | Client-side only | 2026-06-20 |
| DeepSeek-NeoForge | NeoForge | 1.21.4 | Server-side only | 2025-06-03 |
| MineAgent | Fabric and Forge | 1.20.1 | Client and server | 2026-03-30 |
Questions
Does MCLLM need Fabric API on every loader?
Does the server need MCLLM?
Which loader should a player choose?
In the catalog
MCLLM is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 15,189 mods support Minecraft 26.1.2.
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What the author says
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.
Official listing
- Modrinth page
- modrinth.com/mod/mcllm
- Owner
- link-fgfgui
- Published
- 2025-05-22
- Updated on Modrinth
- 2026-06-04
- Facts verified
- 2026-10-15