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release_notes_v130.md

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v1.3.0 - MCP Bridge Update

This release turns the Minecraft MCP path into a real first-class integration instead of a side experiment.

Highlights

  • Local MCP bridge inside the mod with loopback-only auth
  • Copy-paste MCP setup from in-game chat for Codex, Claude Desktop, Claude Code, Gemini CLI, OpenCode, and generic clients
  • Supported Node MCP sidecar with richer prompts, resources, help tools, and planner guidance
  • minecraft_preview_build_plan for dry-run validation before touching the world
  • minecraft_capture_view PNG output with saved screenshot paths
  • Delayed MCP command sequencing with delayTicks / delayMs
  • minecraft_batch_status for polling cinematic/timed command batches
  • Better command normalization:
    • \uXXXX Unicode escape decoding
    • effect give ... 0 coerced to a minimum duration of 1
  • Stronger build-plan docs around terrain alignment, safe-window clamping, support pillars, phases, and preview-first workflow

Release Assets

  • gemini-ai-companion-1.3.0.jar
  • gemini-minecraft-mcp-sidecar.jar

Recommended Setup

  1. Install the mod jar in Fabric 1.21.1
  2. Join a world
  3. Run /chat mcp enable
  4. Run /chat mcp setup <client>
  5. Click [Copy]
  6. Paste into your MCP client config
  7. Restart the MCP client