shutdown_device · React Native Dev MCP: Risk & Policy

WHAT IT DOES

What shutdown_device does on React Native Dev

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

WHY IT NEEDS A POLICY

Why shutdown_device needs a policy

An AI agent can call shutdown_device faster than any human can review — one bad instruction and it creates or modifies resources in React Native Dev by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

shutdown_device Rate-limited

shutdown_device 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": {
    "shutdown_device": {
      "limits": [
        {
          "counter": "shutdown_device_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 React Native Dev, so you can run agents against it safely.

FAQ

Questions about shutdown_device

What does the shutdown_device tool do? +

Shut down a running simulator/emulator. It is categorised as a Write tool in the React Native Dev MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on shutdown_device? +

Register the React Native Dev MCP server in PolicyLayer and add a rule for shutdown_device: 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 React Native Dev. Nothing to install.

What risk level is shutdown_device? +

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

Can I rate-limit shutdown_device? +

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

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

shutdown_device is provided by the React Native Dev MCP server (luizhbesper/react-native-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.