zabbix_get_discovered_hosts

THE RISK

Low Risk

Why zabbix_get_discovered_hosts needs a policy

This tool retrieves or queries monitoring data (discovered hosts) without modifying, deleting, or executing any operations. It is a passive read operation that returns information from the Zabbix monitoring system's discovery results. No state changes, resource creation, deletion, or external execution occurs.

From the tool's definition Tool name 'zabbix_get_discovered_hosts' with description 'Get hosts discovered by network discovery or LLD rules' indicates a retrieval operation. The verb 'get' and action of retrieving discovered hosts data constitutes a read-only query with no side effects.

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

POLICY

How to control zabbix_get_discovered_hosts

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

policy.json

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

zabbix_get_discovered_hosts 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 Zabbix MCP Server — 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 →

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EXPLORE

Related tools and policies

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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 →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about zabbix_get_discovered_hosts

What does the zabbix_get_discovered_hosts tool do? +

Get hosts discovered by network discovery or LLD rules. It is categorised as a Read tool in the Zabbix MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on zabbix_get_discovered_hosts? +

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

What risk level is zabbix_get_discovered_hosts? +

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

Can I rate-limit zabbix_get_discovered_hosts? +

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

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

zabbix_get_discovered_hosts is provided by the Zabbix MCP Server MCP server (leroylim/zabbix-mcp-server-nodejs). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Zabbix MCP Server tool call.

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

CHECK YOUR STACK →