keynote_add_shape · Keynote MCP: Risk & Policy

WHAT IT DOES

What keynote_add_shape does on Keynote

AI agents use keynote_add_shape 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_shape needs a policy

The tool creates (adds) new graphical elements to a presentation slide, which is a write operation that modifies the document state. It does not execute arbitrary code, delete data irreversibly, or move money. The modification is reversible via undo or deletion.

From the tool's definition Tool description states 'Add a new shape (rectangle or oval) to a slide. Optionally set a fill color.' - this creates new content on a slide, which is a reversible modification of the presentation document.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

keynote_add_shape Rate-limited

keynote_add_shape 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_shape": {
      "limits": [
        {
          "counter": "keynote_add_shape_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_shape

What does the keynote_add_shape tool do? +

Add a new shape (rectangle or oval) to a slide. Optionally set a fill color. 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_shape? +

Register the Keynote MCP server in PolicyLayer and add a rule for keynote_add_shape: 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_shape? +

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

Can I rate-limit keynote_add_shape? +

Yes. Add a rate_limit block to the keynote_add_shape 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_shape completely? +

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

keynote_add_shape 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.