MCP-rogal

by R0gaL · 2026-08-16 · Mods

MCP-rogal An MCP server for building Minecraft mods and datapacks. Point an AI assistant at your running game and it can write a datapack, reload it, run it, read the error the game actually produced, and fix it — without you relaying anything by hand. 26 tools, Fabric, Minecraft 26.2. The idea Most of the time lost writing a datapack goes to one thing: something did not work and the game would not say why. A macro missing one $(key) aborts the whole function. /reload reports success while the pack it just tried to load failed. A trigger that was never armed looks exactly like a button that does nothing. So every command comes back with what really happened: time set day → success=true result=1000 setblock ~ ~ ~ minecraft:not_a_block → errorType=parse cursor=15 execute if block ~ ~ ~ bedrock run say → success=false error=null Three different outcomes, told apart: it worked and returned 1000; it never parsed, and here is the character where parsing stopped; it ran fine and did nothing at all. That last line is the one that matters. It is what a silent failure looks like, and it is now visible instead of indistinguishable from success. What it can do Commands and timing execute_comma