keynote_add_text_box · Keynote MCP: Risk & Policy

WHAT IT DOES

What keynote_add_text_box does on Keynote

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

WHY IT NEEDS A POLICY

Why keynote_add_text_box needs a policy

This tool creates or inserts new data (a text box) into an existing presentation, which is a Write operation. It is reversible (the text box can be deleted) and does not execute arbitrary code, delete data permanently, or move money. Medium severity reflects that an AI misuse could add unwanted or misleading content to a presentation, but the action is easily undone and localized to a single slide element.

From the tool's definition 'Add a new text box to a slide' — creates new content on a presentation slide, modifying the document reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

keynote_add_text_box Rate-limited

keynote_add_text_box 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": {
    "keynote_add_text_box": {
      "limits": [
        {
          "counter": "keynote_add_text_box_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 Keynote, so you can run agents against it safely.

FAQ

Questions about keynote_add_text_box

What does the keynote_add_text_box tool do? +

Add a new text box to a slide at a specified position and size. It is categorised as a Write tool in the Keynote MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on keynote_add_text_box? +

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

What risk level is keynote_add_text_box? +

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

Can I rate-limit keynote_add_text_box? +

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

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

keynote_add_text_box is provided by the Keynote MCP server (tszaks/keynote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.