AI agents call get_device_revision 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.
The 'get_*' prefix indicates this is a read operation that retrieves device revision data. There is no indication of data modification, deletion, or execution of commands. The tool appears to be a query to retrieve metadata about device revisions. Confidence is moderately high (0.85) rather than maximum because the description is empty, which introduces minor uncertainty, but the naming convention is clear.
From the tool's definition Tool name is 'get_device_revision'; follows the naming pattern 'get_*' which indicates retrieval without modification. No description provided, but the name strongly suggests querying device revision information from FortiManager.
Documented attack patterns abuse exactly the kind of access get_device_revision 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_device_revision:
{
"version": "1",
"default": "deny",
"tools": {
"get_device_revision": {}
}
}get_device_revision is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_device_revision. 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_device_revision: 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_device_revision 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_device_revision 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_device_revision. 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_device_revision 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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