pool_list

List all storage pools

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/pool-list.md

WHAT IT DOES

What pool_list does on Truenas

AI agents call pool_list 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 pool_list is rated Low

This tool performs a simple data retrieval operation (listing/querying) with no capability to modify, delete, or execute operations. It has minimal blast radius if misused by an AI agent, as the worst outcome would be information disclosure about existing storage pools.

From the tool's definition Tool name is 'pool_list' and description states 'List all storage pools' - this is a pure read operation that retrieves information about existing pools without any modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

pool_list Allowed

pool_list 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": {
    "pool_list": {}
  }
}

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 pool_list call is checked against it from then on.

FAQ

Questions about pool_list

What does the pool_list tool do? +

List all storage pools. 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 pool_list? +

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

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

Can I rate-limit pool_list? +

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

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

pool_list 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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