proxmox_upload_iso

A write tool on the MCP Proxmox MCP server.

SERVERMCP Proxmox Server SOURCEbsahane/mcp-proxmox

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/bsahane-mcp-proxmox/proxmox-upload-iso.md

WHAT IT DOES

What proxmox_upload_iso does on MCP Proxmox Server

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

RISK

Why proxmox_upload_iso is rated Medium

Uploading ISO images is a write operation that adds resources to the virtualization infrastructure. While reversible (ISOs can be deleted), it modifies system state and could be abused to inject malicious boot media into VMs. Severity is high due to the blast radius in a virtualization environment where corrupted ISOs could affect multiple VMs.

From the tool's definition Tool name 'proxmox_upload_iso' combined with server description indicating 'full access to Proxmox API functionality' and 'VM/LXC lifecycle operations'. The 'upload' action modifies the Proxmox infrastructure by adding ISO images used for VM provisioning.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs proxmox_upload_iso safely

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

proxmox_upload_iso Rate-limited

proxmox_upload_iso 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": {
    "proxmox_upload_iso": {
      "limits": [
        {
          "counter": "proxmox_upload_iso_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about proxmox_upload_iso

What does the proxmox_upload_iso tool do? +

proxmox_upload_iso is a write tool on the MCP Proxmox Server MCP server. It is categorised as a Write tool in the MCP Proxmox 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 proxmox_upload_iso? +

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

What risk level is proxmox_upload_iso? +

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

Can I rate-limit proxmox_upload_iso? +

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

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

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

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