AI agents call remove_device_from_group 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 tool name strongly suggests it removes a device from a group in FortiManager. Removing a device from a group can have significant operational impact (e.g., the device may lose policy assignments or management scope), and the action is not automatically reversible.
From the tool's definition Tool name: 'remove_device_from_group' — implies removal of a device from a group, which is typically irreversible without manual re-addition.
Documented attack patterns abuse exactly the kind of access remove_device_from_group 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 remove_device_from_group:
{
"version": "1",
"default": "deny",
"hide": [
"remove_device_from_group"
]
}remove_device_from_group 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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remove_device_from_group. 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 remove_device_from_group: 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.
remove_device_from_group 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 remove_device_from_group 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 remove_device_from_group. 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.
remove_device_from_group 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.
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584 Fortimanager tools catalogued and risk-classified — across an index of 43,000+ MCP servers.