set_cell_width

Set the width of a table cell in millimetres (stored as DXA).

SERVERDocx SOURCEsecurityronin/docx-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/securityronin-docx-mcp/set-cell-width.md

WHAT IT DOES

What set_cell_width does on Docx

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

RISK

Why set_cell_width is rated Medium

This tool modifies document formatting by setting a specific cell width property. It is a reversible operation (the width can be changed again or restored), so it falls under Write rather than Destructive. The blast radius is medium because a malicious agent could degrade document readability or layout by setting inappropriate cell widths across a table, but the damage is correctable.

From the tool's definition Tool description states 'Set the width of a table cell' — an explicit modification operation on document structure.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_cell_width safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Docx, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_cell_width, this is the rule to start with:

set_cell_width Rate-limited

set_cell_width 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": {
    "set_cell_width": {
      "limits": [
        {
          "counter": "set_cell_width_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Docx, apply this rule, and every set_cell_width call is checked against it from then on.

FAQ

Questions about set_cell_width

What does the set_cell_width tool do? +

Set the width of a table cell in millimetres (stored as DXA). It is categorised as a Write tool in the 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_cell_width? +

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

What risk level is set_cell_width? +

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

Can I rate-limit set_cell_width? +

Yes. Add a rate_limit block to the set_cell_width 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_cell_width completely? +

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

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

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