AI agents call list_drivers to retrieve information from Procmon without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves a list of kernel drivers using the WMI Win32_SystemDriver class. This is a read-only operation that queries system information without creating, modifying, deleting, or executing any code. While kernel driver information could theoretically inform malicious actions, the tool itself performs no side effects and poses minimal direct risk as a standalone operation.
From the tool's definition Tool 'list_drivers' uses 'Enumerate kernel drivers via Win32_SystemDriver' - a passive query operation that retrieves system state without modification or execution.
Documented attack patterns abuse exactly the kind of access list_drivers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Procmon, and nothing reaches the server without passing your rules. This is the rule we recommend for list_drivers:
{
"version": "1",
"default": "deny",
"tools": {
"list_drivers": {}
}
}list_drivers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Enumerate kernel drivers via Win32_SystemDriver. It is categorised as a Read tool in the Procmon MCP Server, which means it retrieves data without modifying state.
Register the Procmon MCP server in PolicyLayer and add a rule for list_drivers: 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 Procmon. Nothing to install.
list_drivers 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 list_drivers 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 list_drivers. 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.
list_drivers is provided by the Procmon MCP server (0xhackerfren/procmon-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 18 Procmon tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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18 Procmon tools catalogued and risk-classified — across an index of 42,500+ MCP servers.