Get file or directory info including permissions, size, owner, and timestamps. Provide the full path on the TrueNAS system.
AI agents call filesystem_stat to retrieve information from Truenas without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs read-only queries to retrieve metadata about files and directories on the TrueNAS system. It does not create, modify, delete, or execute anything — it only gathers and returns information about existing filesystem entities.
From the tool's definition Tool description states 'Get file or directory info including permissions, size, owner, and timestamps' — purely retrieval operations with no modification or execution capability.
Documented attack patterns abuse exactly the kind of access filesystem_stat gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Truenas, and nothing reaches the server without passing your rules. This is the rule we recommend for filesystem_stat:
{
"version": "1",
"default": "deny",
"tools": {
"filesystem_stat": {}
}
}filesystem_stat is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get file or directory info including permissions, size, owner, and timestamps. Provide the full path on the TrueNAS system. It is categorised as a Read tool in the Truenas MCP Server, which means it retrieves data without modifying state.
Register the Truenas MCP server in PolicyLayer and add a rule for filesystem_stat: 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 Truenas. Nothing to install.
filesystem_stat 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 filesystem_stat 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 filesystem_stat. 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.
filesystem_stat is provided by the Truenas MCP server (spranab/truenas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Truenas, 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.
279 Truenas tools catalogued and risk-classified — across an index of 43,000+ MCP servers.