bootenv_list

List all boot environments. Shows name, active status, creation date, size, and keep flag.

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/bootenv-list.md

WHAT IT DOES

What bootenv_list does on Truenas

AI agents call bootenv_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 bootenv_list is rated Low

This tool queries and displays information about boot environments without creating, modifying, deleting, or executing any operations. It is a pure read operation with minimal security risk even if misused by an AI agent, as it only retrieves system state information.

From the tool's definition Tool name 'bootenv_list' and description 'List all boot environments. Shows name, active status, creation date, size, and keep flag' indicate a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

bootenv_list Allowed

bootenv_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": {
    "bootenv_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 bootenv_list call is checked against it from then on.

FAQ

Questions about bootenv_list

What does the bootenv_list tool do? +

List all boot environments. Shows name, active status, creation date, size, and keep flag. 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 bootenv_list? +

Register the Truenas MCP server in PolicyLayer and add a rule for bootenv_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 bootenv_list? +

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

Can I rate-limit bootenv_list? +

Yes. Add a rate_limit block to the bootenv_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 bootenv_list completely? +

Set action: deny in the PolicyLayer policy for bootenv_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 bootenv_list? +

bootenv_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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