create_load_balancer · Hcloud MCP: Risk & Policy

WHAT IT DOES

What create_load_balancer does on Hcloud

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

WHY IT NEEDS A POLICY

Why create_load_balancer needs a policy

This tool creates a new load balancer resource in Hetzner Cloud infrastructure, which is reversible (the resource can be deleted). It does not execute arbitrary code, is not destructive (does not delete or overwrite), and does not move money. It is a Write operation that creates infrastructure as a service.

From the tool's definition Tool name is 'create_load_balancer' and description states 'Create a new load balancer'. The verb 'create' indicates data creation, which is a write operation. The context of Hetzner Cloud infrastructure confirms this creates a new resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_load_balancer Rate-limited

create_load_balancer 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": {
    "create_load_balancer": {
      "limits": [
        {
          "counter": "create_load_balancer_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Hcloud, so you can run agents against it safely.

FAQ

Questions about create_load_balancer

What does the create_load_balancer tool do? +

Create a new load balancer. It is categorised as a Write tool in the Hcloud MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_load_balancer? +

Register the Hcloud MCP server in PolicyLayer and add a rule for create_load_balancer: 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 Hcloud. Nothing to install.

What risk level is create_load_balancer? +

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

Can I rate-limit create_load_balancer? +

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

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

create_load_balancer is provided by the Hcloud MCP server (xodus-co/hcloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.