powerOn · Lyngdorf MCP Server MCP: Risk & Policy

WHAT IT DOES

What powerOn does on Lyngdorf MCP Server

AI agents invoke powerOn to trigger actions in Lyngdorf 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 powerOn needs a policy

This tool executes a command that controls a physical audio device, turning it on. It's not a read operation, not a financial operation, and not destructive (it's reversible — the device can be turned off). It triggers an external operation (TCP command to hardware), making it Execute. Severity is medium because misuse could cause unintended device activation but has limited blast radius.

From the tool's definition Turn the audio amplifier on — triggers an external hardware operation on a physical device via TCP

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

powerOn Rate-limited

powerOn 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": {
    "powerOn": {
      "limits": [
        {
          "counter": "poweron_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 Lyngdorf MCP Server, so you can run agents against it safely.

FAQ

Questions about powerOn

What does the powerOn tool do? +

Turn the audio amplifier on. It is categorised as a Execute tool in the Lyngdorf 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 powerOn? +

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

What risk level is powerOn? +

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

Can I rate-limit powerOn? +

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

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

powerOn is provided by the Lyngdorf MCP Server MCP server (thejens/lyngdorf-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.