link_vm_to_backup · CloudStack MCP Server MCP: Risk & Policy

WHAT IT DOES

What link_vm_to_backup does on CloudStack MCP Server

AI agents use link_vm_to_backup 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 link_vm_to_backup needs a policy

This tool modifies VM configuration by establishing a backup association—a reversible change that affects data protection settings but does not permanently delete or destroy resources. While it impacts critical infrastructure (VMs), the operation is non-destructive and can be undone by unlinking.

From the tool's definition Tool name 'link_vm_to_backup' and description 'Link virtual machine to backup' indicate a state-changing operation that associates or modifies the relationship between a virtual machine and a backup resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

link_vm_to_backup Rate-limited

link_vm_to_backup 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": {
    "link_vm_to_backup": {
      "limits": [
        {
          "counter": "link_vm_to_backup_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 link_vm_to_backup

What does the link_vm_to_backup tool do? +

Link virtual machine to backup. 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 link_vm_to_backup? +

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

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

Can I rate-limit link_vm_to_backup? +

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

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

link_vm_to_backup 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.