pve_clone_vm · Proxmox MCP Server MCP: Risk & Policy

WHAT IT DOES

What pve_clone_vm does on Proxmox MCP Server

AI agents use pve_clone_vm to create or update resources in Proxmox MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Proxmox MCP Server environment.

WHY IT NEEDS A POLICY

Why pve_clone_vm needs a policy

Cloning a VM creates a new virtual machine instance, which is a reversible write operation. However, it carries high severity because it can consume significant compute, storage, and network resources, and an AI agent misusing it could rapidly exhaust cluster capacity by creating many clones.

From the tool's definition 'Clone a VM' - creates a new VM as a copy of an existing one

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pve_clone_vm Rate-limited

pve_clone_vm 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": {
    "pve_clone_vm": {
      "limits": [
        {
          "counter": "pve_clone_vm_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 Proxmox MCP Server, so you can run agents against it safely.

FAQ

Questions about pve_clone_vm

What does the pve_clone_vm tool do? +

Clone a VM. It is categorised as a Write tool in the Proxmox MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pve_clone_vm? +

Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for pve_clone_vm: 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 pve_clone_vm? +

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

Can I rate-limit pve_clone_vm? +

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

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

pve_clone_vm is provided by the Proxmox MCP Server MCP server (mjrestivo16/mcp-proxmox). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.