set_run_color

Set the font color of a specific run in a paragraph.

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-run-color.md

WHAT IT DOES

What set_run_color does on Docx

AI agents use set_run_color 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_run_color is rated Medium

The tool modifies document formatting (font color) in a Microsoft Word document, which constitutes a Write operation. It creates or modifies data reversibly—the color change can be undone or changed again. The severity is medium because while formatting changes affect document appearance, they do not destroy data, execute arbitrary code, or cause financial impact.

From the tool's definition Tool name 'set_run_color' and description 'Set the font color of a specific run in a paragraph' indicate modification of document formatting properties. This is a reversible change operation on document content.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_run_color 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_run_color, this is the rule to start with:

set_run_color Rate-limited

set_run_color 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_run_color": {
      "limits": [
        {
          "counter": "set_run_color_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_run_color call is checked against it from then on.

FAQ

Questions about set_run_color

What does the set_run_color tool do? +

Set the font color of a specific run in a paragraph. 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_run_color? +

Register the Docx MCP server in PolicyLayer and add a rule for set_run_color: 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_run_color? +

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

Can I rate-limit set_run_color? +

Yes. Add a rate_limit block to the set_run_color 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_run_color completely? +

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

set_run_color 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.

KEEP EXPLORING

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Guides

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