zabbix_create_value_map

THE RISK

Medium Risk

Why zabbix_create_value_map needs a policy

This tool creates a new configuration object (value map) in Zabbix, which is a reversible Write operation. The action does not execute code, delete data, or have financial implications. The blast radius is low since value maps are non-critical metadata used for display purposes only, and their creation can be easily undone or modified.

From the tool's definition Tool name contains 'create' and description states 'Create a new value map in Zabbix'. Value maps are configuration objects that map numeric values to human-readable text labels.

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

POLICY

How to control zabbix_create_value_map

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_create_value_map:

policy.json

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

zabbix_create_value_map 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.

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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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All 102 Zabbix MCP Server tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about zabbix_create_value_map

What does the zabbix_create_value_map tool do? +

Create a new value map in Zabbix for mapping numeric values to text. It is categorised as a Write tool in the Zabbix MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on zabbix_create_value_map? +

Register the Zabbix MCP Server MCP server in PolicyLayer and add a rule for zabbix_create_value_map: 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_create_value_map? +

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

Can I rate-limit zabbix_create_value_map? +

Yes. Add a rate_limit block to the zabbix_create_value_map 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_create_value_map completely? +

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

zabbix_create_value_map 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 →