pfsense_delete_system_tunables
A destructive tool on the Pfsense MCP server.
This record as markdown: /tools/abl030-pfsense-mcp/pfsense-delete-system-tunables.md
What pfsense_delete_system_tunables does on Pfsense
AI agents call pfsense_delete_system_tunables to permanently remove resources in Pfsense, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why pfsense_delete_system_tunables is rated Critical
The 'delete' verb indicates irreversible removal of data. System tunables are critical firewall configuration parameters; deleting them cannot be undone and would cause immediate operational impact. Despite empty description, the naming pattern and server context (full firewall control) combined with the destructive verb warrant Destructive classification.
From the tool's definition Tool name contains 'delete' prefix and operates on 'system_tunables' in a pfSense firewall context. The server description indicates 677 tools with 'full control over pfSense firewalls.' pfSense system tunables are kernel parameters that control firewall…
Attacks that exploit this kind of access
The rule that runs pfsense_delete_system_tunables safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Pfsense, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pfsense_delete_system_tunables, this is the rule to start with:
pfsense_delete_system_tunables is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Pfsense, apply this rule, and every pfsense_delete_system_tunables call is checked against it from then on.
Questions about pfsense_delete_system_tunables
pfsense_delete_system_tunables is a destructive tool on the Pfsense MCP server. It is categorised as a Destructive tool in the Pfsense MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_delete_system_tunables: 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_delete_system_tunables 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 pfsense_delete_system_tunables 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_delete_system_tunables. 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_delete_system_tunables 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.
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