Xxsx Smart Core

Introduction

Note: For the latest information, please refer to the GitHub repository.

Xxsx Smart Core is a Forge mod that integrates AI large language models into Minecraft, enabling natural language game control via the /ai command.

Players describe their needs in natural language, and the AI autonomously analyzes the intent and executes corresponding Minecraft commands, supporting multi-turn iteration to complete complex tasks. A free shared API key is included out of the box, with support for custom personal API keys.

Key Features

• Natural Language AI Chat — AI can complete tasks and return results by executing Minecraft commands and other methods
• Game State Queries — AI can query player info, block types, item properties, crafting recipes, nearby entities, and more
• PMX Voxel Architecture — Parses MMD model files and converts them to Minecraft block structures via surface voxelization and CIELAB color matching
• Knowledge Base System — Built-in mod knowledge base in the JAR (with planned gradual integration of various mods) and supports external extensions; AI queries automatically as needed
• Per-Player API Configuration — Each player can independently configure their own API key and model
• Multi-Model Switching — Supports in-game switching between custom API providers compatible with OpenAI Chat Completions format
• Context Auto-Compression — When the token limit is exceeded, choose between truncation or AI summarization
• Session Persistence — Conversation history automatically restored when the same player reconnects
• Most configuration options available in config/xxsx_builder-common.toml

Commands

Refer to in-game prompts for accuracy

• /ai [message] — Chat with AI in natural language (requires cheats by default)
• /ai build [PMX path] [scale] — Parse a PMX model and generate a voxel structure (defaults to player's current coordinates; you can also send the file path and requirements directly to the AI and let it handle the invocation)
• /ai model [model name] — Switch AI model
• /ai stop — Interrupt current task

Compatibility

Theoretically compatible with all mods, no matter how complex or niche — though it may consume more tokens. The built-in free model has limited capability; we recommend connecting to the DeepSeek open platform. If you have access to free credits from other providers, most will also outperform the built-in model.

DeepSeek is affordable under normal use, unless you are constantly using it for command-driven building (especially large or complex structures).