Manually refresh an external threat feed.
AI agents invoke refresh_external_threat_feed 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.
This tool triggers an external operation — it actively pulls/updates threat intelligence data from an external source. It is not a simple read (it has side effects on internal state) nor a write (it doesn't create/modify user-defined data), but rather executes an operational action on the FortiManager system. Misuse could cause unexpected feed updates or disrupt threat detection temporarily.
From the tool's definition Manually refresh an external threat feed
Documented attack patterns abuse exactly the kind of access refresh_external_threat_feed 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 refresh_external_threat_feed:
{
"version": "1",
"default": "deny",
"tools": {
"refresh_external_threat_feed": {
"limits": [
{
"counter": "refresh_external_threat_feed_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}refresh_external_threat_feed 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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Manually refresh an external threat feed. 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 refresh_external_threat_feed: 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.
refresh_external_threat_feed 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 refresh_external_threat_feed 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 refresh_external_threat_feed. 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.
refresh_external_threat_feed 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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