pptx_add_callout · Pptx MCP: Risk & Policy

WHAT IT DOES

What pptx_add_callout does on Pptx

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

WHY IT NEEDS A POLICY

Why pptx_add_callout needs a policy

This tool creates new content (a callout annotation with textbox and connector) within a PowerPoint presentation. This is a Write operation because it adds/modifies content reversibly. The blast radius is low—adding a callout annotation does not execute code, delete data, move funds, or trigger external operations. The modification can be easily undone by removing the added elements.

From the tool's definition Tool name 'pptx_add_callout' combined with description 'Add a callout annotation: textbox + connector arrow pointing to target' indicates creation of new annotation elements within a presentation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pptx_add_callout Rate-limited

pptx_add_callout 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": {
    "pptx_add_callout": {
      "limits": [
        {
          "counter": "pptx_add_callout_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 Pptx, so you can run agents against it safely.

FAQ

Questions about pptx_add_callout

What does the pptx_add_callout tool do? +

Add a callout annotation: textbox + connector arrow pointing to target. It is categorised as a Write tool in the Pptx MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pptx_add_callout? +

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

What risk level is pptx_add_callout? +

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

Can I rate-limit pptx_add_callout? +

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

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

pptx_add_callout is provided by the Pptx MCP server (knorq-ai/pptx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.