AI agents call pfsense_list_diagnostics_arp_table to retrieve information from Pfsense without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to list/retrieve ARP table entries for diagnostic purposes. ARP table queries are read-only operations that provide visibility into network state without causing side effects. While the empty description reduces confidence slightly, the tool name and its diagnostic nature clearly indicate a read operation. No data is created, modified, deleted, or financial transactions are involved.
From the tool's definition Tool name contains 'list' and 'diagnostics_arp_table', indicating it retrieves ARP table diagnostic information without modifying state. The description is empty, but the naming convention is explicit: 'list_diagnostics' suggests a read-only query operation.
Attacks that exploit this kind of access
pfsense_list_diagnostics_arp_table. It is categorised as a Read tool in the Pfsense MCP Server, which means it retrieves data without modifying state.
Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_list_diagnostics_arp_table: 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 Pfsense. Nothing to install.
pfsense_list_diagnostics_arp_table 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 pfsense_list_diagnostics_arp_table 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 pfsense_list_diagnostics_arp_table. 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.
pfsense_list_diagnostics_arp_table is provided by the Pfsense MCP server (abl030/pfsense-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.
Teams ship this data inside their own products. See what a licence covers →