opn_mdns_repeater_status

THE RISK

Low Risk

Why opn_mdns_repeater_status needs a policy

The tool name pattern (verb_noun_status) is consistent with read-only diagnostic queries in the OPNsense MCP server family. Status checks retrieve current state without side effects. However, confidence is moderate rather than high due to the empty description providing no explicit confirmation of read-only behavior. If this tool unexpectedly modifies mDNS repeater configuration, it could be Write or Execute instead.

From the tool's definition Tool name 'opn_mdns_repeater_status' indicates a status query operation typical of monitoring/diagnostic functions. The suffix 'status' strongly suggests retrieval of state information without modification.

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

POLICY

How to control opn_mdns_repeater_status

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

policy.json

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

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

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EXPLORE

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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 →
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FAQ

Questions about opn_mdns_repeater_status

What does the opn_mdns_repeater_status tool do? +

opn_mdns_repeater_status. It is categorised as a Read tool in the OPNsense MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on opn_mdns_repeater_status? +

Register the OPNsense MCP Server MCP server in PolicyLayer and add a rule for opn_mdns_repeater_status: 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 OPNsense MCP Server. Nothing to install.

What risk level is opn_mdns_repeater_status? +

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

Can I rate-limit opn_mdns_repeater_status? +

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

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

opn_mdns_repeater_status is provided by the OPNsense MCP Server MCP server (lucamarien/opnsense-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every OPNsense MCP Server tool call.

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

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