cf_create_zone · Cargoshipper MCP: Risk & Policy

WHAT IT DOES

What cf_create_zone does on Cargoshipper

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

WHY IT NEEDS A POLICY

Why cf_create_zone needs a policy

Creating a new CloudFlare zone is a reversible write operation that modifies infrastructure state by adding a new DNS zone. While it can be undone by deleting the zone, it commits resources and has significant blast radius if misused (e.g., creating zones for domains the agent doesn't own, enabling hijacking scenarios). It is not Destructive because zone creation itself is reversible.

From the tool's definition Tool name 'cf_create_zone' and description 'Create a new CloudFlare zone' indicate this creates a new DNS zone resource in CloudFlare.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cf_create_zone Rate-limited

cf_create_zone 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": {
    "cf_create_zone": {
      "limits": [
        {
          "counter": "cf_create_zone_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about cf_create_zone

What does the cf_create_zone tool do? +

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

How do I enforce a policy on cf_create_zone? +

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

What risk level is cf_create_zone? +

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

Can I rate-limit cf_create_zone? +

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

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

cf_create_zone is provided by the Cargoshipper MCP server (scarr7981/cargoshipper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.