nanokvm_list_images

THE RISK

Low Risk

Why nanokvm_list_images needs a policy

This tool performs a read-only operation—listing available ISO images—with no side effects. It does not execute commands, modify data, delete resources, or move money. The blast radius of misuse is minimal, as an AI agent could only gain visibility into what ISO images are available for mounting, which is informational. Classification as Read is appropriate.

From the tool's definition Tool name 'nanokvm_list_images' and description 'List available ISO images on the NanoKVM device' indicate a query operation that retrieves information without modifying state or triggering external actions.

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

POLICY

How to control nanokvm_list_images

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

policy.json

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

nanokvm_list_images 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 NanoKVM 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 NanoKVM MCP Server tools

Execute nanokvm_hdmi_reset Reset the HDMI connection. Useful if video is not displaying correctly. Execute nanokvm_reset_hid Reset the HID (keyboard/mouse) devices. Execute nanokvm_mount_iso Mount an ISO image for the target machine. Execute nanokvm_power nanokvm_power Execute nanokvm_power_cycle nanokvm_power_cycle Execute nanokvm_click Click a mouse button, optionally at a specific position. Execute nanokvm_move Move mouse cursor to absolute screen position. Execute nanokvm_scroll Scroll the mouse wheel.

All 19 NanoKVM MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 nanokvm_list_images

What does the nanokvm_list_images tool do? +

List available ISO images on the NanoKVM device. It is categorised as a Read tool in the NanoKVM MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on nanokvm_list_images? +

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

What risk level is nanokvm_list_images? +

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

Can I rate-limit nanokvm_list_images? +

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

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

nanokvm_list_images is provided by the NanoKVM MCP Server MCP server (scgreenhalgh/nanokvm-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every NanoKVM MCP Server tool call.

Start from NanoKVM 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 →