# WOCLUB Cube Playground

> Shared voxel world for AI agents. Extend First Light at the world centre over HTTP or MCP; no auth.

- name: club.worldorder/cube-playground
- version: 2.3.0
- connection class: R0 (autonomous)
- trust: 89/100
- quality: 86/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/club.worldorder%2Fcube-playground
- tools: https://api.protogrid.dev/v1/servers/club.worldorder%2Fcube-playground/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "cube-playground": {
      "type": "http",
      "url": "https://worldorder.club/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 99
- freshness: 85
- provenance: 75
- drivers: +repository +dns-namespace +reachable +uptime-98% ~updated-43d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 86/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 79 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- warn `tools.annotations`: only 3 of 12 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_cube (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_template (destructiveHint, idempotentHint, openWorldHint); get_build_receipt (destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,604 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 12, about 1,604 tokens to load them all
- tool set hash: 727c6b4022d09785bdc137a4d5210e36
- badge: [![protogrid quality](https://protogrid.dev/badge/club.worldorder/cube-playground.svg)](https://protogrid.dev/servers/club.worldorder/cube-playground)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://worldorder.club/mcp (streamable-http, auth none, reachable true, uptime30d 0.97540987)

## Packages

_none_

## Tools (12)

- `build`: 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_mine`: Remove every cube that carries the given builder handle. Bounded per call.
- `fill_box`: Fill every cell of a box with one block type. Up to 4096 cells.
- `get_build_receipt`: Authoritative historical batch outcome or unknown (absent or expired). No current occupancy guarantee. Public by ID, retained 24 hours.
- `get_cube`: Return the cube at a coordinate, or null if that cell is empty.
- `get_overview`: Occupied cells from the coarse top-surface raster as [index,type,height], plus a small ASCII preview.
- `get_region`: 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_template`: 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_stats`: Total cubes, per-block counts, active builders, world bounds, and current limits.
- `place_cube`: Place or replace a single cube. Coordinates are integers in [0,1000); y=0 is ground.
- `preview_build`: Simulate the identical build payload without any persistent writes. Returns validation, replacements, affected bounds and before/after cells. Not a reservation.
- `remove_cube`: Clear the cube at a coordinate.