document_apply_style · LibreOffice MCP Tools MCP

WHAT IT DOES

What document_apply_style does on LibreOffice MCP Tools

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

WHY IT NEEDS A POLICY

Why document_apply_style needs a policy

This tool modifies document formatting properties in a reversible manner. Style application is a write operation that changes document state but can be undone. It has minimal blast radius—incorrect style application causes cosmetic changes only, with no data loss or destructive effects.

From the tool's definition Tool applies formatting styles to document content. The description states it will 'apply a heading or paragraph style to a specific paragraph,' which modifies document formatting but does not delete, execute code, or create financial obligations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

document_apply_style Rate-limited

document_apply_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": {
    "document_apply_style": {
      "limits": [
        {
          "counter": "document_apply_style_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches LibreOffice MCP Tools, so you can run agents against it safely.

FAQ

Questions about document_apply_style

What does the document_apply_style tool do? +

Apply a heading or paragraph style to a specific paragraph by index. It is categorised as a Write tool in the LibreOffice MCP Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on document_apply_style? +

Register the LibreOffice MCP Tools MCP server in PolicyLayer and add a rule for document_apply_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 LibreOffice MCP Tools. Nothing to install.

What risk level is document_apply_style? +

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

Can I rate-limit document_apply_style? +

Yes. Add a rate_limit block to the document_apply_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 document_apply_style completely? +

Set action: deny in the PolicyLayer policy for document_apply_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 document_apply_style? +

document_apply_style is provided by the LibreOffice MCP Tools MCP server (passerbyflutter/libreoffice-mcp-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.