AI agents call delete_fortiextender to permanently remove resources in Fortimanager — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The 'delete' operation typically results in irreversible destruction of data or system configurations. In a FortiManager context, deleting a FortiExtender would remove network device configurations or the device registration itself, which cannot be automatically undone without restoration procedures.
From the tool's definition Tool name 'delete_fortiextender' uses the verb 'delete', which indicates irreversible removal of a FortiExtender resource or configuration. The description is empty, limiting certainty, but the naming convention is unambiguous.
Documented attack patterns abuse exactly the kind of access delete_fortiextender gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Fortimanager, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_fortiextender:
{
"version": "1",
"default": "deny",
"hide": [
"delete_fortiextender"
]
}delete_fortiextender disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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delete_fortiextender. It is categorised as a Destructive tool in the Fortimanager MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Fortimanager MCP server in PolicyLayer and add a rule for delete_fortiextender: 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 Fortimanager. Nothing to install.
delete_fortiextender 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 delete_fortiextender 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 delete_fortiextender. 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.
delete_fortiextender is provided by the Fortimanager MCP server (jmpijll/fortimanager-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Fortimanager, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
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