reset_vm_user_data · CloudStack MCP Server MCP

WHAT IT DOES

What reset_vm_user_data does on CloudStack MCP Server

AI agents use reset_vm_user_data 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 reset_vm_user_data needs a policy

Resetting user data on a VM modifies its configuration but does not delete the VM or irreversibly destroy data. The operation overwrites user data (a configuration artifact), which is a Write-level action. Misuse could cause misconfiguration of VM startup scripts, hence medium severity.

From the tool's definition 'Reset virtual machine user data' — resets (overwrites) the user data on a VM, which is a reversible modification

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reset_vm_user_data Rate-limited

reset_vm_user_data 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": {
    "reset_vm_user_data": {
      "limits": [
        {
          "counter": "reset_vm_user_data_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 reset_vm_user_data

What does the reset_vm_user_data tool do? +

Reset virtual machine user data. 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 reset_vm_user_data? +

Register the CloudStack MCP Server MCP server in PolicyLayer and add a rule for reset_vm_user_data: 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 reset_vm_user_data? +

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

Can I rate-limit reset_vm_user_data? +

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

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

reset_vm_user_data 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.