This record as markdown: /tools/spranab-truenas-mcp/pool-get.md
What pool_get does on Truenas
AI agents call pool_get 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.
Why pool_get is rated Low
This tool retrieves pool configuration or status information from a TrueNAS SCALE instance. It is a simple read-only query operation that queries existing data without side effects. No data is created, modified, deleted, or overwritten, and no external operations are triggered. The blast radius of misuse is minimal—an attacker gains visibility into pool details but cannot harm storage or system integrity.
From the tool's definition Tool name 'pool_get' and description 'Get pool details by ID' indicate a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
The rule that runs pool_get 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_get, this is the rule to start with:
pool_get is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Truenas, apply this rule, and every pool_get call is checked against it from then on.
Questions about pool_get
Get pool details by ID. 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 pool_get: 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.
pool_get 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 pool_get 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 pool_get. 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.
pool_get 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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