format_text · Keynote MCP Server MCP: Risk & Policy

WHAT IT DOES

What format_text does on Keynote MCP Server

AI agents use format_text 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 format_text needs a policy

This tool modifies existing presentation data (text formatting) but does not delete, destroy, or execute external code. Changes are reversible—text can be reformatted to different styles. The blast radius is medium because an agent could deface or corrupt the visual appearance of slides, but the underlying content remains intact and easily recoverable.

From the tool's definition Tool description states 'Formats a text item with font, size, color, bold, italic, and alignment options' — this modifies presentation content reversibly (text properties can be changed again).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

format_text Rate-limited

format_text 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": {
    "format_text": {
      "limits": [
        {
          "counter": "format_text_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 format_text

What does the format_text tool do? +

Formats a text item with font, size, color, bold, italic, and alignment options. 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 format_text? +

Register the Keynote MCP Server MCP server in PolicyLayer and add a rule for format_text: 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 format_text? +

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

Can I rate-limit format_text? +

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

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

format_text 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.