v1.1.1+mc1.21.11

Changes (compared to v1.1.0+mc1.21.10)

• Updated Minecraft/Fabric target versions to the 1.21.11 line.
  • minecraft_version -> 1.21.11
  • yarn_mappings -> 1.21.11+build.4
  • Raised minimum required fabric-loader version (>=0.18.0)
  • Updated fabric-api to 0.141.3+1.21.11
• Restored the take_screenshot tool in the MCP protocol tool list.
• Added a regression test for take_screenshot.

Build Artifact

• mcp-server-mod-1.1.1+mc1.21.11.jar

1.1.0+mc1.21.10

Comparison Base

• v1.0.1+mc1.21.10 → v1.1.0+mc1.21.10

Highlights

• Added the take_screenshot tool and improved camera control/debug-save flow.
• Improved the execute_commands response schema and diagnostics.
• Added command outcome analysis logic (CommandOutcomeAnalyzer) to improve response quality.

Stability Improvements

• Improved command timeout cancellation handling and prevented late dispatch.
• Applied message source/command context filtering to reduce false-positive responses.
• Fixed MCP protocol compile issues and corrected block state information accuracy.

Tests and Docs

• Expanded test coverage significantly (HTTPMCPServer, CommandExecutor, CommandOutcomeAnalyzer, ScreenshotUtils, MCPProtocol, etc.).
• Updated README.md, TESTING.md, and design/planning documents.

Change Size

• 25 files changed
• +2,191 / -188

Compatibility

• Minecraft version: 1.21.10 (unchanged)
• Mod version: 1.1.0+mc1.21.10

Download

• mcp-server-mod-1.1.0+mc1.21.10.jar

MCP Server Mod v1.0.1 for Minecraft 1.21.9

v1.0.1+mc1.21.9

Support minecraft 1.21.9

MCP Server Mod v1.0.1 for Minecraft 1.21.10

v1.0.1+mc1.21.10

Support minecraft 1.21.10

MCP Server Mod v1.0.1 for Minecraft 1.21.8

v1.0.1+mc1.21.8

Update 1.0.1+mc1.21.8

MCP Server Mod v1.0.0 for Minecraft 1.21.8

v1.0.0+mc1.21.8

Support mc1.21.8

MCP Server Mod v1.0.0 for Minecraft 1.21.7

v1.0.0+mc1.21.7

Support mc1.21.7

MCP Server Mod v1.0.0 for Minecraft 1.21.6

v1.0.0+mc1.21.6

Support mc1.21.6

MCP Server Mod v1.0.0 for Minecraft 1.21.5

v1.0.0+mc1.21.5

Support mc1.21.5

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