document_close · LibreOffice MCP Tools MCP: Risk & Policy

WHAT IT DOES

What document_close does on LibreOffice MCP Tools

AI agents use document_close 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_close needs a policy

document_close modifies application state by closing documents and releasing resources, making it a Write-category operation rather than Read. The blast radius is minimal because closing documents is reversible (user can reopen), non-destructive (no data loss occurs), and typically requires prior context of opened documents.

From the tool's definition Tool performs state-changing operation 'Close an open document and release its resources' which modifies the application state by closing and cleaning up document resources.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

document_close Rate-limited

document_close 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_close": {
      "limits": [
        {
          "counter": "document_close_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_close

What does the document_close tool do? +

Close an open document and release its resources (including any temp files from format bridging). 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_close? +

Register the LibreOffice MCP Tools MCP server in PolicyLayer and add a rule for document_close: 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_close? +

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

Can I rate-limit document_close? +

Yes. Add a rate_limit block to the document_close 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_close completely? +

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

document_close 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.