set_pressure_plate · Ice Puzzle MCP: Risk & Policy

WHAT IT DOES

What set_pressure_plate does on Ice Puzzle

AI agents use set_pressure_plate 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_pressure_plate needs a policy

The tool creates or modifies level design elements (positioning a pressure plate and changing barrier state). This is a classic Write operation: it changes game state reversibly without executing arbitrary code, deleting data, or causing financial impact. Severity is medium because incorrect placement could break puzzle solvability, but the effect is undoable through other level editing tools on the server.

From the tool's definition Tool description states 'Set pressure plate position (deactivates barrier)' - modifies level state by positioning a pressure plate and altering barrier activation status. This is a reversible modification to game level data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_pressure_plate Rate-limited

set_pressure_plate 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_pressure_plate": {
      "limits": [
        {
          "counter": "set_pressure_plate_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_pressure_plate

What does the set_pressure_plate tool do? +

Set pressure plate position (deactivates barrier). 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_pressure_plate? +

Register the Ice Puzzle MCP server in PolicyLayer and add a rule for set_pressure_plate: 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_pressure_plate? +

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

Can I rate-limit set_pressure_plate? +

Yes. Add a rate_limit block to the set_pressure_plate 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_pressure_plate completely? +

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

set_pressure_plate 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.