set_vm_network · Mcp Utm MCP: Risk & Policy

WHAT IT DOES

What set_vm_network does on Mcp Utm

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

WHY IT NEEDS A POLICY

Why set_vm_network needs a policy

This tool creates or modifies VM network configuration reversibly. It is not destructive since network configuration can be reconfigured or reverted. It is not a read operation since it performs updates. While it could potentially affect system behavior through network settings changes, it operates within the scope of VM configuration management and does not execute arbitrary code or trigger financial operations.

From the tool's definition Tool performs 'Update network configuration' which is a modification operation on VM state. The description explicitly states it modifies VM network settings.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_vm_network Rate-limited

set_vm_network 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": {
    "set_vm_network": {
      "limits": [
        {
          "counter": "set_vm_network_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 Mcp Utm, so you can run agents against it safely.

FAQ

Questions about set_vm_network

What does the set_vm_network tool do? +

Update network configuration of a stopped VM. It is categorised as a Write tool in the Mcp Utm MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_vm_network? +

Register the Mcp Utm MCP server in PolicyLayer and add a rule for set_vm_network: 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 Utm. Nothing to install.

What risk level is set_vm_network? +

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

Can I rate-limit set_vm_network? +

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

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

set_vm_network is provided by the Mcp Utm MCP server (neverprepared/mcp-utm). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.