spreadsheet_set_cell · LibreOffice MCP Tools MCP

WHAT IT DOES

What spreadsheet_set_cell does on LibreOffice MCP Tools

AI agents use spreadsheet_set_cell 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 spreadsheet_set_cell needs a policy

This tool creates or modifies data in a spreadsheet in a reversible manner—cell values can be changed or cleared later. While it persists changes immediately, the modification itself is not destructive (data is not deleted or irreversibly overwritten).

From the tool's definition Tool name 'spreadsheet_set_cell' and description 'Set the value or formula of a single cell in a spreadsheet. Changes are saved immediately' indicate the tool modifies spreadsheet data by setting cell values or formulas.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

spreadsheet_set_cell Rate-limited

spreadsheet_set_cell 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": {
    "spreadsheet_set_cell": {
      "limits": [
        {
          "counter": "spreadsheet_set_cell_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 spreadsheet_set_cell

What does the spreadsheet_set_cell tool do? +

Set the value or formula of a single cell in a spreadsheet. Changes are saved immediately. 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 spreadsheet_set_cell? +

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

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

Can I rate-limit spreadsheet_set_cell? +

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

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

spreadsheet_set_cell 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.