
MCChatGPT
A mod that provides a ChatGPT interface inside Minecraft
About this Mod
MCChatGPT
A mod that provides a ChatGPT interface inside minecraft
This model knows it's inside Minecraft, and will respond accordingly.
- The model is limited by ChatGPT's training data, which ended around when 1.17 was released.

Commands
- Use
/mcchatgpt-auth <token>with your OpenAI token to authenticate with the API- You can get a token from OpenAI API Keys
- Use
/ask <question>to ask the model a question, the model will respond in the chat with context from the last 10 messages.- Hover over the message to see the number of tokens used and approximate cost of the API request.
- Use
/setcontextlevel <0-3>to set the context level of the model.- Higher context levels will provide the model with more information about the world and the player but will cost more per API request.
- 0: No information (default)
- 1: Player information
- + ~100 tokens per request
- 2: Player and world information
- + ~200 tokens per request
- 3: Player, world, and entity information
- + ~1k tokens per request
- Use
/nextconversationgo to the next conversation, or start a new conversation with the model. - Use
/previousconversationto go back to the previous conversation with the model. - Use
/setconversation <conversationid>to set the conversation with the model to a specific conversation. - Use
/listconversationsto list all the conversations you have had with the model.- This will provide the conversation id, and the last message you sent in the conversation.
Config
- model: The model used for the API requests.
- Must support Chat Completions otherwise an error will occur.
gpt-3.5-turbois the default value.- If changed, you may need to change the estimated_cost_per_token value in the config to match the new model.
- You can find a list of models here.
- temperature: The temperature used for the API requests.
- Between 0 and 2, higher values will result in more creative responses, while lower values will result in more deterministic responses.
1.0is the default value.
Installation
- Download the latest version of the mod from the releases page
- If you are using the fabric version, please download the latest version of Fabric API
- Place the downloaded mod files in your mods folder
- Launch Minecraft
Reporting Bugs
If you find any bugs, please report them on the issue tracker.
Available Versions
How to Install MCChatGPT on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.19.4).
Install Mod
Open the mod browser in the dashboard and search for "MCChatGPT". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.19.4, 1.19.3, 1.19.2 (+1 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
MCChatGPT 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 (1.19.4). You can switch loaders with one click in the panel.
Is MCChatGPT compatible with fabric and forge?
MCChatGPT officially supports fabric, forge for Minecraft 1.19.4, 1.19.3, 1.19.2. 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 MCChatGPT – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MCChatGPT 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.
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