disk_temperatures

Get current temperatures for one or more disks. Provide disk device names like

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/disk-temperatures.md

WHAT IT DOES

What disk_temperatures does on Truenas

AI agents call disk_temperatures 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 disk_temperatures is rated Low

This tool performs a query/retrieval of disk temperature data without modifying system state, creating, executing commands, or triggering operations. It is a straightforward monitoring read operation typical of system observability, fitting the 'Read' category with low severity as it poses minimal risk if misused.

From the tool's definition Tool name 'disk_temperatures' and description 'Get current temperatures for one or more disks' indicate a data retrieval operation with no side effects or modifications.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs disk_temperatures 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 disk_temperatures, this is the rule to start with:

disk_temperatures Allowed

disk_temperatures 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": {
    "disk_temperatures": {}
  }
}

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 disk_temperatures call is checked against it from then on.

FAQ

Questions about disk_temperatures

What does the disk_temperatures tool do? +

Get current temperatures for one or more disks. Provide disk device names like. 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 disk_temperatures? +

Register the Truenas MCP server in PolicyLayer and add a rule for disk_temperatures: 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 disk_temperatures? +

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

Can I rate-limit disk_temperatures? +

Yes. Add a rate_limit block to the disk_temperatures 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 disk_temperatures completely? +

Set action: deny in the PolicyLayer policy for disk_temperatures. 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 disk_temperatures? +

disk_temperatures 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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