pptx_set_dimensions · Pptx MCP: Risk & Policy

WHAT IT DOES

What pptx_set_dimensions does on Pptx

AI agents use pptx_set_dimensions 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_set_dimensions needs a policy

This tool creates or modifies presentation metadata (slide dimensions) in a way that is reversible — dimensions can be changed again to different values. It does not delete data, execute arbitrary code, or move money.

From the tool's definition Tool name is 'pptx_set_dimensions' and description states 'Set presentation slide dimensions in inches (applies to all slides)' — this modifies presentation properties that affect the entire document.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pptx_set_dimensions Rate-limited

pptx_set_dimensions 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_set_dimensions": {
      "limits": [
        {
          "counter": "pptx_set_dimensions_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_set_dimensions

What does the pptx_set_dimensions tool do? +

Set presentation slide dimensions in inches (applies to all slides). 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_set_dimensions? +

Register the Pptx MCP server in PolicyLayer and add a rule for pptx_set_dimensions: 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_set_dimensions? +

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

Can I rate-limit pptx_set_dimensions? +

Yes. Add a rate_limit block to the pptx_set_dimensions 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_set_dimensions completely? +

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

pptx_set_dimensions 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.