MCP Server Mod v1.0.0 for Minecraft 1.21.4

MCP Server Mod v1.0.0 for Minecraft 1.21.4

Overview

First stable release of the MCP Server Mod - a Fabric mod that implements a Model Context Protocol (MCP) server, enabling AI assistants like Claude to interact with Minecraft through structured commands.

Features

• MCP Protocol Support: Full HTTP server implementation on port 8080
• Three Core Tools:
  • execute_commands - Execute Minecraft commands with safety validation
  • get_player_info - Get comprehensive player information (position, health, inventory)
  • get_blocks_in_area - Scan and retrieve blocks in specified areas
• Safety System: Comprehensive command validation and size limits
• Block Compression: Optimized block change representation using connected regions
• Async Execution: Non-blocking command execution

Requirements

• Minecraft 1.21.4
• Fabric Loader 0.16.14+
• Fabric API 0.119.3+1.21.4
• Java 21+

Installation

1. Install Fabric Loader for Minecraft 1.21.4
2. Download and install Fabric API
3. Place the mod JAR in your mods folder
4. Launch Minecraft - MCP server starts automatically on localhost:8080

Usage

Connect your AI assistant to http://localhost:8080/mcp and use the available tools to interact with Minecraft safely and efficiently.

Technical Details

• Client-side mod with HTTP MCP server
• Comprehensive safety validation system
• Block change compression and optimization
• Chat message capture during command execution
• Configurable via config/mcp-client.json

🤖 Generated with Claude Code