system_info

Get TrueNAS system information including hostname, version, uptime, CPU, memory, and hardware details. Use this to understand the system you are managing.

SERVERTruenas SOURCEspranab/truenas-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/spranab-truenas-mcp/system-info.md

WHAT IT DOES

What system_info does on Truenas

AI agents call system_info to retrieve information from Truenas without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why system_info is rated Low

This tool only retrieves and queries system metadata about a TrueNAS instance. It has no side effects, creates no changes, executes no code, and poses minimal security risk. It is a typical Read operation used for monitoring and understanding system state.

From the tool's definition Tool name is 'system_info' and description explicitly states it 'Get[s] TrueNAS system information including hostname, version, uptime, CPU, memory, and hardware details.' This is purely informational retrieval with no modification, deletion, execution, or…

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs system_info safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Truenas, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For system_info, this is the rule to start with:

system_info Allowed

system_info is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "system_info": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Truenas, apply this rule, and every system_info call is checked against it from then on.

FAQ

Questions about system_info

What does the system_info tool do? +

Get TrueNAS system information including hostname, version, uptime, CPU, memory, and hardware details. Use this to understand the system you are managing. It is categorised as a Read tool in the Truenas MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on system_info? +

Register the Truenas MCP server in PolicyLayer and add a rule for system_info: 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.

What risk level is system_info? +

system_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit system_info? +

Yes. Add a rate_limit block to the system_info 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.

How do I block system_info completely? +

Set action: deny in the PolicyLayer policy for system_info. 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.

What MCP server provides system_info? +

system_info 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.

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