numbers_export_document

THE RISK

Medium Risk

Why numbers_export_document needs a policy

This tool creates or outputs data in new file formats (reversible write operation). While export generates new files, these are derivative outputs and not destructive to the original document. The operation is reversible and has low blast radius—an AI misuse would produce unwanted file exports but no data loss or system compromise.

From the tool's definition Tool description states it 'Export[s] a Numbers document to a different format: PDF, Excel (.xlsx), or CSV', which creates new files in different formats from existing document data.

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

POLICY

How to control numbers_export_document

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

policy.json

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

numbers_export_document 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 Iwork — 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

Related tools and policies

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All 114 Iwork 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 numbers_export_document

What does the numbers_export_document tool do? +

Export a Numbers document to a different format: PDF, Excel (.xlsx), or CSV (not .numbers — use numbers_save_document for that). It is categorised as a Write tool in the Iwork MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on numbers_export_document? +

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

What risk level is numbers_export_document? +

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

Can I rate-limit numbers_export_document? +

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

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

numbers_export_document is provided by the Iwork MCP server (reichenbach/iwork_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Iwork tool call.

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

CHECK YOUR STACK →