pve_create_snapshot · Proxmox MCP Server MCP: Risk & Policy

WHAT IT DOES

What pve_create_snapshot does on Proxmox MCP Server

AI agents use pve_create_snapshot 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_create_snapshot needs a policy

Snapshots are a form of state preservation that can be created, managed, and deleted reversibly. While they consume storage and can impact system performance, they do not irreversibly destroy data (like delete/drop operations) nor move financial resources. They represent a modification/creation of infrastructure state, placing this firmly in the Write category.

From the tool's definition Tool creates a snapshot of a VM, which is a reversible operation that persists new data (the snapshot state) without destruction. The description explicitly states 'Create a snapshot.'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pve_create_snapshot Rate-limited

pve_create_snapshot 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_create_snapshot": {
      "limits": [
        {
          "counter": "pve_create_snapshot_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_create_snapshot

What does the pve_create_snapshot tool do? +

Create a snapshot of 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_create_snapshot? +

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

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

Can I rate-limit pve_create_snapshot? +

Yes. Add a rate_limit block to the pve_create_snapshot 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_create_snapshot completely? +

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

pve_create_snapshot 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.