AI agents call proxmox_list_nodes to retrieve information from Homelab without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays infrastructure monitoring information (node status, resource utilization, uptime) without making changes, executing commands, or triggering side effects. It is purely informational. The low severity reflects that exposure of node status data alone poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'proxmox_list_nodes' and description 'List all Proxmox nodes with their status, CPU usage, RAM usage, and uptime' indicate data retrieval with no modification or execution. The verb 'list' is explicitly a query operation.
Attacks that exploit this kind of access
List all Proxmox nodes with their status, CPU usage, RAM usage, and uptime. It is categorised as a Read tool in the Homelab MCP Server, which means it retrieves data without modifying state.
Register the Homelab MCP server in PolicyLayer and add a rule for proxmox_list_nodes: 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 Homelab. Nothing to install.
proxmox_list_nodes 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 proxmox_list_nodes 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 proxmox_list_nodes. 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.
proxmox_list_nodes is provided by the Homelab MCP server (nainounen/homelab-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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