list_usb_mappings

List USB device mappings for passthrough.

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/gethosthewalrus-proxmox-mcp/list-usb-mappings.md

WHAT IT DOES

What list_usb_mappings does on Proxmox MCP Server

AI agents call list_usb_mappings to retrieve information from Proxmox MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_usb_mappings is rated Low

This tool only retrieves and lists USB device mapping configurations. It has no side effects, does not modify any state, and simply queries existing passthrough mappings.

From the tool's definition List USB device mappings for passthrough

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_usb_mappings safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Proxmox MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_usb_mappings, this is the rule to start with:

list_usb_mappings Allowed

list_usb_mappings is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Proxmox MCP Server, apply this rule, and every list_usb_mappings call is checked against it from then on.

FAQ

Questions about list_usb_mappings

What does the list_usb_mappings tool do? +

List USB device mappings for passthrough. It is categorised as a Read tool in the Proxmox MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_usb_mappings? +

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

What risk level is list_usb_mappings? +

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

Can I rate-limit list_usb_mappings? +

Yes. Add a rate_limit block to the list_usb_mappings 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_usb_mappings completely? +

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

list_usb_mappings is provided by the Proxmox MCP Server MCP server (gethosthewalrus/proxmox-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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