bootenv_keep

Set or clear the

SERVERTruenas SOURCEspranab/truenas-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/spranab-truenas-mcp/bootenv-keep.md

WHAT IT DOES

What bootenv_keep does on Truenas

AI agents use bootenv_keep to create or update resources in Truenas, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Truenas environment.

RISK

Why bootenv_keep is rated Medium

Based on the name, this tool likely sets or clears a 'keep' flag on TrueNAS boot environments, which is a reversible write operation that marks a boot environment to prevent deletion. The description is truncated so confidence is reduced. This is a Write operation as it modifies metadata/flags rather than deleting or executing code.

From the tool's definition Tool name 'bootenv_keep' suggests setting or clearing a keep flag on boot environments; description is truncated and uninformative: 'Set or clear the'

Attacks that exploit this kind of access

RECOMMENDED RULE

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

bootenv_keep Rate-limited

bootenv_keep stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "bootenv_keep": {
      "limits": [
        {
          "counter": "bootenv_keep_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about bootenv_keep

What does the bootenv_keep tool do? +

Set or clear the. It is categorised as a Write tool in the Truenas MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on bootenv_keep? +

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

bootenv_keep is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit bootenv_keep? +

Yes. Add a rate_limit block to the bootenv_keep 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_keep completely? +

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

bootenv_keep 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.

KEEP EXPLORING

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