update_style

Update an existing style's basedOn and/or next properties.

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/update-style.md

WHAT IT DOES

What update_style does on Docx

AI agents use update_style 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 update_style is rated Medium

This tool modifies style properties (basedOn and next) in a Word document, which alters the document structure reversibly. This is a Write operation rather than Destructive because style updates can be reverted (by updating them again or using undo).

From the tool's definition Tool name 'update_style' combined with description 'Update an existing style's basedOn and/or next properties' indicates modification of document style metadata.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

update_style Rate-limited

update_style 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": {
    "update_style": {
      "limits": [
        {
          "counter": "update_style_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 update_style call is checked against it from then on.

FAQ

Questions about update_style

What does the update_style tool do? +

Update an existing style's basedOn and/or next properties. 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 update_style? +

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

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

Can I rate-limit update_style? +

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

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

update_style 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

More on Docx, and thousands of servers like it.

This server

All 219 Docx tools →

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aroflo_create_or_update_record on AroFlo MCP →team_manager_update_budget on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →