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Step 2 of 4 of the Minecraft Java MCP setup. Download the minecraft-java MCP mod jar and its matching Fabric API jar and install both into the Minecraft mods folder. Use when the user has Minecraft Java with the Fabric loader ready and needs the MCP mod and Fabric API installed.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
SOC 직업 분류 기준
Orchestrates a primarily-natural landscape or region in a live Minecraft Java world — terrain, landforms, biomes, water, natural scenery, named natural wonders, and designed caves. Sequences the terrain leaf skills and threads one shared coherence context (one datum, one continuous recipe, one palette, one biome+scatter plan, one integration pass) so the result reads as one coherent place. Use for canyons, mountains, islands, coastlines, river valleys, forests, cave systems, and recreations of natural wonders. Tier-2 orchestrator.
Orchestrates a working or connective system in a live Minecraft Java world — a redstone contraption or automatic farm, a transit line, a nether hub, a mechanism — together with its housing and right-of-way. Sequences design, functional verification, build, the terrain cuts/grades it needs, and one integration pass so the machine works AND sits in the world without a raw seam. Tier-2 orchestrator.
Designs and blueprints monuments, sculptures, and build-art in a live Minecraft Java Edition world — giant statues, organic creatures and dragons, abstract sculpture, pixel art and murals, large 3D text and logos. Produces solid or shell-only figurative forms with no habitable interiors, using pixel-grid image mapping, organic-curve construction, palette-gradient mapping, and armor-stand detailing. Use when the user wants a statue, sculpture, monument, memorial, mural, pixel art, logo, giant text, or a large creature. Part of the minecraft-builder workflow.
Verifies a Minecraft Java Edition build in-world after each phase — checks the plan was carried out as specified, that the result fits the world cleanly (no dangling edges, blocked paths, or unintended overrides), and proposes concrete course corrections. Use after every major phase of executing a build plan, as the build's self-correction checkpoint. Part of the minecraft-builder workflow.
Designs, plans, and verifies complex redstone and mechanical contraptions in a live Minecraft Java Edition world — item sorters, hidden and piston doors, automatic farms, mob-spawner collectors, minecart networks and roller coasters, water and bubble elevators, note-block music, traps, and decorative machines. Java-correct: uses Java redstone mechanics (quasi-connectivity, deterministic timing) and avoids patched-out tricks. Designs ship with functional in-world verification and automated correction. Use when the user wants a redstone build, an automatic farm, a contraption, or any working machine. Part of the minecraft-builder workflow.
Designs and blueprints world-spanning transit and infrastructure networks in a live Minecraft Java Edition world — rail lines, roads and highways, nether-hub transit, bridges, tunnels, elevators, docks, and airports — the connective network between separate builds. Chooses the network topology and routes the links. Use when the user wants to connect two or more sites, build a transit network, a nether hub, a highway, a bridge, a tunnel, or a rail line between places. Part of the minecraft-builder workflow.
| name | setup-mod |
| description | Step 2 of 4 of the Minecraft Java MCP setup. Download the minecraft-java MCP mod jar and its matching Fabric API jar and install both into the Minecraft mods folder. Use when the user has Minecraft Java with the Fabric loader ready and needs the MCP mod and Fabric API installed. |
This is Phase 2 of the four-phase Minecraft Java MCP setup. It assumes
Phase 1 (setup-fabric) is done: Fabric is installed and the mods/ folder
exists. You should have, written down:
26.1.2);<server> root with its
mods/ folder (dedicated server).If either is missing, get it before continuing. Work interactively — confirm each download before moving on.
The MCP server is delivered as a Fabric mod. It needs exactly two jars in
mods/, both matching the same Minecraft version:
minecraft-fabric-mcp-<modver>+<mc-version>.jar.Match the Minecraft version on both jars. A jar built for
26.1.2will not load on1.21.11, and vice versa. The version suffix after the+must equal the version chosen in Phase 1.
From the mod's releases: https://github.com/chapmanjw/minecraft-java-fabric-mcp-server/releases
Pick the asset whose filename ends in +<your-mc-version>.jar — e.g.
minecraft-fabric-mcp-0.1.0+26.1.2.jar for Minecraft 26.1.2. Pin to a specific
release tag rather than tracking latest, so the version stays in lockstep
with Minecraft and Fabric API.
From Modrinth: https://modrinth.com/mod/fabric-api/versions
Filter by your Minecraft version and download the Fabric API jar for it — e.g.
fabric-api-0.149.1+26.1.2.jar. The exact Fabric API build doesn't have to be
the newest, but its Minecraft version must match.
mods/Copy both jars into the mods/ folder from Phase 1.
Single-player — the platform path:
| OS | Path |
|---|---|
| Windows | %appdata%\.minecraft\mods\ |
| macOS | ~/Library/Application Support/minecraft/mods/ |
| Linux | ~/.minecraft/mods/ |
Dedicated server — <server>/mods/:
mkdir -p /opt/fabric-mcp/mods
# copy both jars into it
The folder should now contain exactly these two jars (plus any other mods the user already runs):
mods/
├── fabric-api-0.149.1+26.1.2.jar
└── minecraft-fabric-mcp-0.1.0+26.1.2.jar
Confirm with the user that both files are present and that the version suffixes match each other and the Minecraft version.
If the user wants to confirm the mod loads before configuring it:
java -Xmx2G -jar fabric-server-launch.jar nogui.In the log, look for the mod's startup lines:
[minecraft_fabric_mcp] MCP server config loaded from .../config/minecraft_fabric_mcp/config.json
[minecraft_fabric_mcp] Registered N MCP tools (M skipped due to version/module constraints)
[minecraft_fabric_mcp] MCP server listening at http://127.0.0.1:8765 (...)
Seeing the listening line means the mod loaded and the embedded MCP server
started. (Phase 3 covers configuring it and verifying /healthz.) If the game
crashes on load, the usual cause is a version mismatch between the mod jar, the
Fabric API jar, and Minecraft — re-check the +<version> suffixes.
Confirm with the user:
mods/.mods/.listening line.Hand off: Phase 2 is done — the mod is installed. The next step configures the
MCP server (config.json), launches it, and verifies it's reachable. Offer to
continue with the setup-server skill now.