AI agents call get_fmg_gui_settings to retrieve information from Fortimanager without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves GUI configuration settings from FortiManager. The 'get' prefix and the passive nature of retrieving display settings (no state changes, no code execution, no data deletion) clearly place this in the Read category. GUI settings are typically non-sensitive operational metadata, making the severity low.
From the tool's definition Tool name 'get_fmg_gui_settings' and description 'Get GUI display settings and configuration' indicate a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_fmg_gui_settings 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 get_fmg_gui_settings:
{
"version": "1",
"default": "deny",
"tools": {
"get_fmg_gui_settings": {}
}
}get_fmg_gui_settings is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get GUI display settings and configuration. It is categorised as a Read tool in the Fortimanager MCP Server, which means it retrieves data without modifying state.
Register the Fortimanager MCP server in PolicyLayer and add a rule for get_fmg_gui_settings: 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.
get_fmg_gui_settings 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 get_fmg_gui_settings 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 get_fmg_gui_settings. 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.
get_fmg_gui_settings 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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