get_all_network_devices

THE RISK

Low Risk

Why get_all_network_devices needs a policy

This tool queries and retrieves data about connected network devices without performing any side effects, modifications, or destructive actions. It is purely informational in nature, making it a Read operation with low severity since the exposed data relates to device inventory which, while potentially sensitive, does not directly enable unauthorized actions or cause system harm when queried.

From the tool's definition Tool name and description indicate retrieval of network device information: 'Get comprehensive list of all network devices (DHCP + static + ARP) with detailed info'. No modification, deletion, or execution of commands is described.

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

POLICY

How to control get_all_network_devices

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_all_network_devices": {}
  }
}

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

Create a free account and register ASUS Merlin Router MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More ASUS Merlin Router MCP Server tools

Destructive remove_dhcp_reservation Remove DHCP reservation by MAC or IP address Destructive remove_keyword_filter Remove keyword from filter list Destructive remove_mac_filter Remove device from MAC filter Destructive remove_network_service_filter_rule Remove network service filter rule by matching all criteria exactly Destructive remove_url_filter Remove URL pattern from global filter list Destructive remove_vpn_routing_policy Remove device from VPN Director routing (Asuswrt-Merlin firmware only). Device will return Execute execute_command Execute a custom command on the router via SSH. WARNING: NEVER use this for file operation Execute restart_service Restart a specific router service (e.g., wireless, vpnclient1, httpd)

All 47 ASUS Merlin Router MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_all_network_devices

What does the get_all_network_devices tool do? +

Get comprehensive list of all network devices (DHCP + static + ARP) with detailed info. It is categorised as a Read tool in the ASUS Merlin Router MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_all_network_devices? +

Register the ASUS Merlin Router MCP Server MCP server in PolicyLayer and add a rule for get_all_network_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 ASUS Merlin Router MCP Server. Nothing to install.

What risk level is get_all_network_devices? +

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

Can I rate-limit get_all_network_devices? +

Yes. Add a rate_limit block to the get_all_network_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 get_all_network_devices completely? +

Set action: deny in the PolicyLayer policy for get_all_network_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 get_all_network_devices? +

get_all_network_devices is provided by the ASUS Merlin Router MCP Server MCP server (kcsoukup/asus-merlin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every ASUS Merlin Router MCP Server tool call.

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

CHECK YOUR STACK →