update_default_nic_for_vm · CloudStack MCP Server MCP

WHAT IT DOES

What update_default_nic_for_vm does on CloudStack MCP Server

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

WHY IT NEEDS A POLICY

Why update_default_nic_for_vm needs a policy

This tool modifies the default NIC assignment for a virtual machine, which is a reversible configuration change (another NIC can be set as default). It does not delete data or execute arbitrary code. Misuse could disrupt VM networking but the operation is reversible, placing it in the Write category with medium severity.

From the tool's definition 'Update default NIC for virtual machine' - 'update' indicates a modification operation on an existing VM's network interface configuration

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_default_nic_for_vm Rate-limited

update_default_nic_for_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": {
    "update_default_nic_for_vm": {
      "limits": [
        {
          "counter": "update_default_nic_for_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 CloudStack MCP Server, so you can run agents against it safely.

FAQ

Questions about update_default_nic_for_vm

What does the update_default_nic_for_vm tool do? +

Update default NIC for virtual machine. It is categorised as a Write tool in the CloudStack 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 update_default_nic_for_vm? +

Register the CloudStack MCP Server MCP server in PolicyLayer and add a rule for update_default_nic_for_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 CloudStack MCP Server. Nothing to install.

What risk level is update_default_nic_for_vm? +

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

Can I rate-limit update_default_nic_for_vm? +

Yes. Add a rate_limit block to the update_default_nic_for_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 update_default_nic_for_vm completely? +

Set action: deny in the PolicyLayer policy for update_default_nic_for_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 update_default_nic_for_vm? +

update_default_nic_for_vm is provided by the CloudStack MCP Server MCP server (mozg31337/cloudstack-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.