AI agents call list_vm_drives to retrieve information from Mcp Utm without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries information about VM drives without modifying, deleting, or executing any operations. It is purely informational and has no adverse effects if called by an AI agent. The blast radius is minimal—at worst, the agent learns about existing drive configurations.
From the tool's definition Tool name 'list_vm_drives' and description 'List drives attached to a VM with their IDs and sizes' indicate a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
List drives attached to a VM with their IDs and sizes. It is categorised as a Read tool in the Mcp Utm MCP Server, which means it retrieves data without modifying state.
Register the Mcp Utm MCP server in PolicyLayer and add a rule for list_vm_drives: 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.
list_vm_drives is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_vm_drives 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 list_vm_drives. 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.
list_vm_drives 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.
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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