AI agents invoke validate_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.
The name implies interaction with CLI scripts. Even if labeled 'validate,' such tools often execute or parse scripts in a live environment, especially in network management contexts like FortiManager. Given the server context (FortiManager JSON-RPC, network policy management) and sibling tools involving device configuration, this likely runs or tests CLI commands. Empty description lowers confidence.
From the tool's definition Tool name 'validate_cli_script' suggests execution or validation of CLI scripts; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access validate_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 validate_cli_script:
{
"version": "1",
"default": "deny",
"tools": {
"validate_cli_script": {
"limits": [
{
"counter": "validate_cli_script_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}validate_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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validate_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 validate_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.
validate_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 validate_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 validate_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.
validate_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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