set_goal · Ice Puzzle MCP: Risk & Policy

WHAT IT DOES

What set_goal does on Ice Puzzle

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

WHY IT NEEDS A POLICY

Why set_goal needs a policy

This tool creates or modifies level data (goal placement) within the Ice Puzzle level design context. It is reversible—the goal position can be changed or cleared later—so it qualifies as Write rather than Destructive. The severity is medium because misuse could corrupt a level design, but the blast radius is limited to the current level draft and can be undone.

From the tool's definition The tool "set_goal" modifies level state by setting a goal position parameter, which is a reversible configuration change to the level under construction.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_goal Rate-limited

set_goal 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": {
    "set_goal": {
      "limits": [
        {
          "counter": "set_goal_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 Ice Puzzle, so you can run agents against it safely.

FAQ

Questions about set_goal

What does the set_goal tool do? +

Set the goal position (can be on edge/wall). It is categorised as a Write tool in the Ice Puzzle MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_goal? +

Register the Ice Puzzle MCP server in PolicyLayer and add a rule for set_goal: 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 Ice Puzzle. Nothing to install.

What risk level is set_goal? +

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

Can I rate-limit set_goal? +

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

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

set_goal is provided by the Ice Puzzle MCP server (wmoten/ice-puzzle-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.