assign_to_house · Baselings MCP: Risk & Policy

WHAT IT DOES

What assign_to_house does on Baselings

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

WHY IT NEEDS A POLICY

Why assign_to_house needs a policy

The action creates or modifies game state reversibly. While it operates within a financial-themed game involving yield and crypto rewards (USDC, ETH, BTC), the tool itself does not move money, execute arbitrary code, or irreversibly delete data. Moving a pet between houses is a state update comparable to other Write operations like 'buy_house' or 'buy_food'.

From the tool's definition Tool description states 'Move a baseling into a house' — this modifies game state by relocating an in-game asset (baseling) to a different location/structure, which is reversible (the baseling can be moved again).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assign_to_house Rate-limited

assign_to_house 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": {
    "assign_to_house": {
      "limits": [
        {
          "counter": "assign_to_house_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 Baselings, so you can run agents against it safely.

FAQ

Questions about assign_to_house

What does the assign_to_house tool do? +

Move a baseling into a house. It is categorised as a Write tool in the Baselings MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on assign_to_house? +

Register the Baselings MCP server in PolicyLayer and add a rule for assign_to_house: 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 Baselings. Nothing to install.

What risk level is assign_to_house? +

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

Can I rate-limit assign_to_house? +

Yes. Add a rate_limit block to the assign_to_house 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 assign_to_house completely? +

Set action: deny in the PolicyLayer policy for assign_to_house. 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 assign_to_house? +

assign_to_house is provided by the Baselings MCP server (jimbo530/baselings-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.