move_room · Loenn MCP: Risk & Policy

WHAT IT DOES

What move_room does on Loenn

AI agents use move_room to create or update resources in Loenn — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Loenn environment.

WHY IT NEEDS A POLICY

Why move_room needs a policy

The tool modifies the position/coordinates of a room within the game map, which changes the room's spatial properties. This is a Write operation because it alters existing data in a reversible manner (the position change can be undone or changed again). It is not Destructive because the room data itself is preserved and the operation is reversible.

From the tool's definition Tool name 'move_room' and description 'Move a room to a new world-space position' indicates modification of room spatial data. This is a reversible data transformation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

move_room Rate-limited

move_room stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "move_room": {
      "limits": [
        {
          "counter": "move_room_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Loenn, so you can run agents against it safely.

FAQ

Questions about move_room

What does the move_room tool do? +

Move a room to a new world-space position. It is categorised as a Write tool in the Loenn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on move_room? +

Register the Loenn MCP server in PolicyLayer and add a rule for move_room: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Loenn. Nothing to install.

What risk level is move_room? +

move_room is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit move_room? +

Yes. Add a rate_limit block to the move_room rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block move_room completely? +

Set action: deny in the PolicyLayer policy for move_room. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides move_room? +

move_room is provided by the Loenn MCP server (magedeline/loenn-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.