AI agents call list_vms to retrieve information from Nutanix without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple enumeration/query of virtual machines. It has no side effects, does not execute code, does not modify infrastructure, and does not delete or move resources. The blast radius of misuse is limited to information disclosure of VM inventory. The 'list' verb and read-only nature clearly position this in the Read category.
From the tool's definition Tool name 'list_vms' and description 'List all VMs visible to the Prism Central deployment' indicate a read-only query operation that retrieves VM information without modifying state.
Attacks that exploit this kind of access
List all VMs visible to the Prism Central deployment. It is categorised as a Read tool in the Nutanix MCP Server, which means it retrieves data without modifying state.
Register the Nutanix MCP server in PolicyLayer and add a rule for list_vms: 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 Nutanix. Nothing to install.
list_vms 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_vms 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_vms. 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_vms is provided by the Nutanix MCP server (nobanks/nutanix-mcp). 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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