add_image · Keynote MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_image does on Keynote MCP Server

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

WHY IT NEEDS A POLICY

Why add_image needs a policy

This tool creates new content (an image) within a presentation slide. It modifies the presentation state reversibly — the image can be removed or replaced. It does not execute arbitrary code, delete data, move money, or trigger uncontrolled external operations. It is a straightforward content insertion operation, typical of Write-category tools.

From the tool's definition Tool description states it 'Adds an image file to a slide' — a creation/modification operation that is reversible. The sibling tools (add_slide, add_text_item, add_chart, etc.) are all Write operations that construct presentation content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_image Rate-limited

add_image 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": {
    "add_image": {
      "limits": [
        {
          "counter": "add_image_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 MCP Server, so you can run agents against it safely.

FAQ

Questions about add_image

What does the add_image tool do? +

Adds an image file to a slide at a given position with optional width and height. It is categorised as a Write tool in the Keynote MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_image? +

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

What risk level is add_image? +

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

Can I rate-limit add_image? +

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

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

add_image is provided by the Keynote MCP Server MCP server (superdwayne/keynotemp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.