keynote_add_slide · Keynote MCP: Risk & Policy

WHAT IT DOES

What keynote_add_slide does on Keynote

AI agents use keynote_add_slide 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_slide needs a policy

Adding a slide creates new content within a Keynote presentation, making it a Write operation. The change is reversible (slides can be deleted), so it does not qualify as Destructive. Severity is medium because while the operation modifies user content, it is non-destructive and bounded in scope—it only adds a blank slide without executing arbitrary code or affecting external systems.

From the tool's definition Tool description states 'Add a new blank slide at the end of the presentation.' This is a create operation that modifies the presentation by adding new content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

keynote_add_slide Rate-limited

keynote_add_slide 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_slide": {
      "limits": [
        {
          "counter": "keynote_add_slide_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_slide

What does the keynote_add_slide tool do? +

Add a new blank slide at the end of the presentation. 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_slide? +

Register the Keynote MCP server in PolicyLayer and add a rule for keynote_add_slide: 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_slide? +

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

Can I rate-limit keynote_add_slide? +

Yes. Add a rate_limit block to the keynote_add_slide 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_slide completely? +

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

keynote_add_slide 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.