set_regulation_mode · Plugwise MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_regulation_mode does on Plugwise MCP Server

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

WHY IT NEEDS A POLICY

Why set_regulation_mode needs a policy

'Set' operations that change device configuration or operating mode are reversible modifications (Write). The description is nearly empty ('Regulation mode:' with no further detail), lowering confidence. In a smart home context, regulation mode likely controls heating/cooling behavior, which is a reversible setting change.

From the tool's definition Tool name: 'set_regulation_mode' — implies setting/changing a configuration mode on a Plugwise smart home device (likely a thermostat or heating system).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_regulation_mode Rate-limited

set_regulation_mode 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_regulation_mode": {
      "limits": [
        {
          "counter": "set_regulation_mode_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about set_regulation_mode

What does the set_regulation_mode tool do? +

Regulation mode:. It is categorised as a Write tool in the Plugwise MCP Server 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_regulation_mode? +

Register the Plugwise MCP Server MCP server in PolicyLayer and add a rule for set_regulation_mode: 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 Plugwise MCP Server. Nothing to install.

What risk level is set_regulation_mode? +

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

Can I rate-limit set_regulation_mode? +

Yes. Add a rate_limit block to the set_regulation_mode 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_regulation_mode completely? +

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

set_regulation_mode is provided by the Plugwise MCP Server MCP server (tommertom/plugwise-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.