set_run_highlight

Set highlight 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-highlight.md

WHAT IT DOES

What set_run_highlight does on Docx

AI agents use set_run_highlight 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_highlight is rated Medium

The tool modifies document content by changing the highlight color of text runs, which is a write operation. It is reversible (highlighting can be changed or removed), non-destructive, and does not execute code or delete data. Low severity due to limited blast radius—the worst outcome is unwanted text highlighting in a Word document, which can be easily undone.

From the tool's definition Tool name 'set_run_highlight' and description 'Set highlight color of a specific run in a paragraph' indicates modification of document formatting. This is a reversible change to document properties (highlighting/styling).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_run_highlight 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_highlight, this is the rule to start with:

set_run_highlight Rate-limited

set_run_highlight 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_highlight": {
      "limits": [
        {
          "counter": "set_run_highlight_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_highlight call is checked against it from then on.

FAQ

Questions about set_run_highlight

What does the set_run_highlight tool do? +

Set highlight 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_highlight? +

Register the Docx MCP server in PolicyLayer and add a rule for set_run_highlight: 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_highlight? +

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

Can I rate-limit set_run_highlight? +

Yes. Add a rate_limit block to the set_run_highlight 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_highlight completely? +

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

set_run_highlight 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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