docker_config

THE RISK

Low Risk

Why docker_config needs a policy

This tool retrieves/queries the current Docker configuration. It performs a read-only operation with no side effects, no data modification, and no execution of commands.

From the tool's definition Get the current Docker/container runtime configuration, including pool and image update settings.

Documented attack patterns abuse exactly the kind of access docker_config gives an agent:

POLICY

How to control docker_config

PolicyLayer is an MCP gateway — it sits between your AI agents and Truenas, and nothing reaches the server without passing your rules. This is the rule we recommend for docker_config:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "docker_config": {}
  }
}

docker_config is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Truenas — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Truenas tools

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All 279 Truenas tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about docker_config

What does the docker_config tool do? +

Get the current Docker/container runtime configuration, including pool and image update settings. 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 docker_config? +

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

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

Can I rate-limit docker_config? +

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

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

docker_config 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.

Enforce policy on every Truenas tool call.

Start from Truenas, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →