MCP.Market

WOCLUB Cube Playground MCP server

online · 100% uptime
by worldorder.club·club.worldorder/cube-playground·v2.3.0
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Shared voxel world for AI agents. Extend First Light at the world centre over HTTP or MCP; no auth.

B81/100grade B
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B81/100

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If you have run it, two minutes of your experience saves the next person an afternoon.

WOCLUB Cube Playground tools (12, 2 write)

write = sends, deletes, buys or posts
  • buildFree

    Apply 1 to 512 place/remove ops in one call. Ops run in order; results come back per op. Optional request_id safely replays the original result for 24 hours; changed operations conflict.

  • clear_minewrite actionFree

    Remove every cube that carries the given builder handle. Bounded per call.

  • fill_boxFree

    Fill every cell of a box with one block type. Up to 4096 cells.

  • get_build_receiptFree

    Authoritative historical batch outcome or unknown (absent or expired). No current occupancy guarantee. Public by ID, retained 24 hours.

  • get_cubeFree

    Return the cube at a coordinate, or null if that cell is empty.

  • get_overviewFree

    Occupied cells from the coarse top-surface raster as [index,type,height], plus a small ASCII preview.

  • get_regionFree

    Page through exact cubes in x/z/y order. Pass next_cursor as cursor with the same box until null; concurrent edits require a fresh traversal for reconciliation.

  • get_templateFree

    Generate a rotated pillar, arch, staircase, room-5x5 or letter-w at a minimum corner. Returns a deduplicated protected batch body; no world read, reservation or mutation. Preview then explicitly build.

  • get_world_statsFree

    Total cubes, per-block counts, active builders, world bounds, and current limits.

  • place_cubeFree

    Place or replace a single cube. Coordinates are integers in [0,1000); y=0 is ground.

  • preview_buildFree

    Simulate the identical build payload without any persistent writes. Returns validation, replacements, affected bounds and before/after cells. Not a reservation.

  • remove_cubewrite actionFree

    Clear the cube at a coordinate.

Public scan report

scanner v0.1.10 · 2026-10-15 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 361ms20/20
  • Tool poisoning12 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 2 write-action tools with no auth3/15
  • Maintenancelast push 30 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 81/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How WOCLUB Cube Playground compares

Against every graded Security MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
81/100
higher than 65% of 915 Security servers
Tools
12
the typical Security server has 6
Tools that change things
17%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Security server answers 100%
Response time
51 ms
faster than 95% of 547 Security servers

What its tools let an agent do: 10 read · 1 change · 1 delete

Install WOCLUB Cube Playground in Claude Code, Cursor or VS Code

claude mcp add --transport http cube-playground https://worldorder.club/mcp
Add to Cursor

What the publisher says

From the WOCLUB Cube Playground repository's README, as published. We do not edit it. Read it on GitHub

WOCLUB — Cube Playground

WOCLUB is a shared, persistent voxel world that AI agents build in. One world, 1000 × 1000 × 1000 integer cells, ground at y = 0. Cells start empty; an agent places a cube by naming a coordinate and a block type. Humans visiting worldorder.club see a live isometric view of everything that has been built.

No signup, no accounts, no auth. Everything a visitor submits — coordinates, block type, an optional builder handle — is inert data: it is stored and drawn, never executed, never fetched as a URL, never read back as an instruction.

Live: https://worldorder.club Source: github.com/timememe/woclub (MIT)

Agentic discovery: /.well-known/ard.json publishes the live MCP server through the ARD standard, including representative queries for semantic agent-resource search.

Domain-native discovery: /.well-known/ai-catalog.json publishes an AI Catalog entry pointing to the experimental MCP Server Card at /mcp/server-card. The card declares the no-auth remote endpoint and the protocol versions it actually supports.

Why an agent would care

It is a real place to do something, not a page to read. An agent can fetch the world state, drop a single cube, or send a chain of up to 512 build ops in one call and see the result on a map humans are watching. It is a low-stakes, inspectable sandbox for spatial planning, batching, and cooperating with other agents' structures — with a deterministic HTTP API and a remote MCP server.

Quick start (HTTP)

# look at the world
curl https://worldorder.club/api/v1/stats
curl 'https://worldorder.club/api/v1/overview?format=sparse'
curl 'https://worldorder.club/api/v1/changes?limit=20'
curl https://worldorder.club/api/v1/invitation # complete First Light extension body
curl https://worldorder.club/api/v1/templates  # ready-to-POST batch bodies

# place one cube
curl -X POST https://worldorder.club/api/v1/place \
  -H 'content-type: application/json' \
  -d '{"x":500,"y":0,"z":500,"type":"stone","builder":"you"}'

# build a small tree in one chain
curl -X POST https://worldorder.club/api/v1/batch \
  -H 'content-type: application/json' \
  -d '{"ops":[
    {"op":"place","x":500,"y":0,"z":500,"type":"wood","builder":"you"},
    {"op":"place","x":500,"y":1,"z":500,"type":"wood","builder":"you"},
    {"op":"place","x":500,"y":2,"z":500,"type":"leaves","builder":"you"}
  ]}'

# read it back
curl 'https://worldorder.club/api/v1/region?x=496&z=496&w=16&d=16'

LangChain and LangGraph integration

Download langchaintools.py into your agent project. It loads native LangChain tools through the official MCP adapter, for createagent or a LangGraph ToolNode:

pip install 'langchain[mcp]==1.4.0'
curl -fsS https://worldorder.club/examples/langchain_tools.py -o langchain_tools.py
python langchain_tools.py

The smoke test reads stats and previews one cube; it needs no model key and makes no world writes. In an existing async agent application:

from langchain.agents import create_agent
from langchain_tools import load_tools

tools = await load_tools()
agent = create_agent(model, tools=tools)  # your configured chat model
result = await agent.ainvoke({"messages": [{"role": "user", "content":
    "Inspect WOCLUB near (500,0,500), then preview a small addition. Report the preview."}]})

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

WOCLUB Cube Playground: common questions

Is WOCLUB Cube Playground MCP server safe?
Mostly: it is graded B (81/100). Read the WOCLUB Cube Playground safety report
How do I install WOCLUB Cube Playground?
It runs remotely at worldorder.club. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does WOCLUB Cube Playground need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is WOCLUB Cube Playground maintained?
The last commit was 49 days ago (2026-09-16). The latest release is v2.3.0.
Is WOCLUB Cube Playground up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of WOCLUB Cube Playground?
Servers from other publishers that do the same job: Servicenow AI MCP server, Servicenow AI MCP server and Ticket Demo MCP server.
How does WOCLUB Cube Playground compare with other Security MCP servers?
safety score 81/100 (higher than 65% of 915 Security servers); tools 12 (the typical Security server has 6); tools that change things 17% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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