Safely cleans up identified Zombie VMs. REQUIRES explicit list of VM names to avoid accidents.
AI agents call cleanup_zombies to permanently remove resources in Virtualbox MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Cleaning up zombie VMs involves destroying virtual machine instances, which is an irreversible operation. Once a VM is destroyed, its state, data, and configuration are lost. The tool requires explicit VM names to avoid accidents, which further confirms the destructive nature of the action. This aligns with the 'destroy_vm' sibling tool on the same server, reinforcing that 'cleanup' here means permanent removal.
From the tool's definition 'Cleans up identified Zombie VMs' — removing/destroying VMs is irreversible; the word 'cleanup' in the context of VMs implies termination and deletion of VM instances
Attacks that exploit this kind of access
Safely cleans up identified Zombie VMs. REQUIRES explicit list of VM names to avoid accidents. It is categorised as a Destructive tool in the Virtualbox MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Virtualbox MCP Server MCP server in PolicyLayer and add a rule for cleanup_zombies: 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 Virtualbox MCP Server. Nothing to install.
cleanup_zombies is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cleanup_zombies 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.
Set action: deny in the PolicyLayer policy for cleanup_zombies. 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.
cleanup_zombies is provided by the Virtualbox MCP Server MCP server (usemanusai/virtualbox-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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