set_page_margins

THE RISK

Medium Risk

Why set_page_margins needs a policy

set_page_margins creates or modifies document layout properties reversibly. While it changes document state, the operation is non-destructive and can be easily undone by setting different margins. This fits the Write category (creates/modifies data reversibly) rather than Read (no side effects) or higher-severity categories.

From the tool's definition Tool modifies document formatting by setting page margins (top, bottom, left, right parameters). This is a reversible modification to document properties, not data deletion or code execution.

Documented attack patterns abuse exactly the kind of access set_page_margins gives an agent:

POLICY

How to control set_page_margins

PolicyLayer is an MCP gateway — it sits between your AI agents and Doc/docx, and nothing reaches the server without passing your rules. This is the rule we recommend for set_page_margins:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_page_margins": {
      "limits": [
        {
          "counter": "set_page_margins_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

set_page_margins 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.

Create a free account and register Doc/docx — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Doc/docx tools

Destructive delete_paragraph Delete specified paragraph from document Parameters: - paragraph_index: Parag Destructive delete_table_row Delete a row from table Parameters: - table_index: Table index - row_inde Destructive delete_text Delete specified text from paragraph Parameters: - paragraph_index: Paragraph Write find_and_replace Find and replace text in the document Parameters: - find_text: Text to find Write search_and_replace Search and replace text in the document, providing detailed replacement information and pr Write add_heading Add heading to document Parameters: - text: Heading text - level: Heading Write add_page_break Add page break Write add_paragraph Add paragraph text to document Parameters: - text: Paragraph text content

All 23 Doc/docx tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about set_page_margins

What does the set_page_margins tool do? +

Set page margins Parameters: - top: Top margin (cm) - bottom: Bottom margin (cm) - left: Left margin (cm) - right: Right margin (cm). It is categorised as a Write tool in the Doc/docx MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_page_margins? +

Register the Doc/docx MCP server in PolicyLayer and add a rule for set_page_margins: 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 Doc/docx. Nothing to install.

What risk level is set_page_margins? +

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

Can I rate-limit set_page_margins? +

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

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

set_page_margins is provided by the Doc/docx MCP server (meterlong/mcp-doc). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Doc/docx tool call.

Start from Doc/docx, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →