DELETE /api/v2/system/crl/revoked_certificate
AI agents call pfsense_delete_system_crl_revoked_certificate 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.
This tool irreversibly deletes data (revoked certificates from the CRL) and cannot be undone. Deletion of security-critical certificate revocation information could compromise the firewall's ability to validate certificate chains and detect compromised certificates. While not directly causing financial harm, this is a destructive operation that permanently removes security infrastructure data.
From the tool's definition Tool name contains 'delete' and description shows 'DELETE /api/v2/system/crl/revoked_certificate' endpoint. The operation permanently removes revoked certificate data from the pfSense Certificate Revocation List.
Attacks that exploit this kind of access
DELETE /api/v2/system/crl/revoked_certificate. 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_crl_revoked_certificate: 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_crl_revoked_certificate 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_crl_revoked_certificate 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_crl_revoked_certificate. 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_crl_revoked_certificate 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.
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