reboot_gateway · Plugwise MCP Server MCP: Risk & Policy

WHAT IT DOES

What reboot_gateway does on Plugwise MCP Server

AI agents invoke reboot_gateway to trigger actions in Plugwise MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why reboot_gateway needs a policy

This tool executes a reboot command on physical smart home infrastructure, which is an external operation that cannot be easily reversed mid-execution. While not strictly destructive (no data loss) or financial, it causes temporary service disruption affecting all connected devices and active climate control.

From the tool's definition 'Reboot the Plugwise gateway' triggers an external operation (device reboot) whose effects depend on execution context. The description warns of temporary disconnection and interruption of heating/cooling control, indicating significant side effects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reboot_gateway Rate-limited

reboot_gateway stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "reboot_gateway": {
      "limits": [
        {
          "counter": "reboot_gateway_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

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 reboot_gateway

What does the reboot_gateway tool do? +

Reboot the Plugwise gateway. Use with caution as this will temporarily disconnect all devices and interrupt heating/cooling control. The gateway typically takes 1-2 minutes to fully restart. It is categorised as a Execute tool in the Plugwise MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on reboot_gateway? +

Register the Plugwise MCP Server MCP server in PolicyLayer and add a rule for reboot_gateway: 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 reboot_gateway? +

reboot_gateway is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit reboot_gateway? +

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

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

reboot_gateway 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.