Low Risk

list_devices

List devices on the home

How to control list_devices ↓

What list_devices does on Nature Remo MCP Server

AI agents call list_devices to retrieve information from Nature Remo MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why list_devices needs a policy

This tool performs a read-only operation to enumerate devices. It retrieves data about devices already present in the home network without creating, modifying, deleting, or executing any actions. The blast radius of misuse is minimal—an attacker could only gain visibility into the home device inventory but could not manipulate devices or cause harm through listing alone.

From the tool's definition Tool name 'list_devices' and description 'List devices on the home' indicate a query operation that retrieves information without modifying any state.

Documented attack patterns abuse exactly the kind of access list_devices gives an agent:

How to control list_devices

PolicyLayer is an MCP gateway — it sits between your AI agents and Nature Remo MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_devices:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_devices": {}
  }
}

list_devices is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Nature Remo MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about list_devices

What does the list_devices tool do? +

List devices on the home. It is categorised as a Read tool in the Nature Remo MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_devices? +

Register the Nature Remo MCP Server MCP server in PolicyLayer and add a rule for list_devices: 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 Nature Remo MCP Server. Nothing to install.

What risk level is list_devices? +

list_devices is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_devices? +

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

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

list_devices is provided by the Nature Remo MCP Server MCP server (noboru-i/nature-remo-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Nature Remo MCP Server tool call.

Start from Nature Remo MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

4 Nature Remo MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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