AI agents invoke create_cli_script to trigger actions in Fortimanager. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
CLI scripts in FortiManager are used to execute commands on network devices. Creating a CLI script implies the ability to run arbitrary CLI commands on managed FortiGate devices, which is an Execute-category action. The description is empty, reducing confidence, but the name strongly implies script creation that can be executed on network infrastructure.
From the tool's definition Tool name 'create_cli_script' on a FortiManager MCP server that interacts via JSON-RPC. Sibling tools include 'add_custom_command_to_template' and other configuration-modifying tools.
Documented attack patterns abuse exactly the kind of access create_cli_script 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 create_cli_script:
{
"version": "1",
"default": "deny",
"tools": {
"create_cli_script": {
"limits": [
{
"counter": "create_cli_script_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}create_cli_script stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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create_cli_script. It is categorised as a Execute tool in the Fortimanager MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Fortimanager MCP server in PolicyLayer and add a rule for create_cli_script: 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.
create_cli_script is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the create_cli_script 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 create_cli_script. 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.
create_cli_script 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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