stop_vm

Hard-stop a VM (like pulling the power plug). Prefer shutdown_vm for graceful stop.

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/gethosthewalrus-proxmox-mcp/stop-vm.md

WHAT IT DOES

What stop_vm does on Proxmox MCP Server

AI agents invoke stop_vm to trigger actions in Proxmox MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why stop_vm is rated High

This tool forcibly terminates a running VM immediately, analogous to pulling the power plug. It triggers an external operation (stopping a virtual machine) with significant blast radius — any unsaved data or in-progress operations on the VM are lost. While not strictly irreversible (the VM can be restarted), data loss from an abrupt stop can be permanent.

From the tool's definition Hard-stop a VM (like pulling the power plug). Prefer shutdown_vm for graceful stop.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs stop_vm 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 stop_vm, this is the rule to start with:

stop_vm Rate-limited

stop_vm stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "stop_vm": {
      "limits": [
        {
          "counter": "stop_vm_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT 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 stop_vm call is checked against it from then on.

FAQ

Questions about stop_vm

What does the stop_vm tool do? +

Hard-stop a VM (like pulling the power plug). Prefer shutdown_vm for graceful stop. It is categorised as a Execute tool in the Proxmox MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on stop_vm? +

Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for stop_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 stop_vm? +

stop_vm is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit stop_vm? +

Yes. Add a rate_limit block to the stop_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 stop_vm completely? +

Set action: deny in the PolicyLayer policy for stop_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 stop_vm? +

stop_vm 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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