hide_excel_formulas · Office MCP Server MCP: Risk & Policy

WHAT IT DOES

What hide_excel_formulas does on Office MCP Server

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

WHY IT NEEDS A POLICY

Why hide_excel_formulas needs a policy

This tool modifies Excel document state by changing formula visibility settings, which is a Write operation (reversible change to document properties). It does not execute code, delete data, or cause financial impact. Severity is low because hiding/showing formulas is a cosmetic formatting change with minimal blast radius if misused by an AI agent.

From the tool's definition The tool name 'hide_excel_formulas' and description '隐藏/显示 Excel 公式' (hide/show Excel formulas) indicates toggling the visibility of formulas in Excel cells—a reversible modification to formatting/display properties, not deletion or execution.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hide_excel_formulas Rate-limited

hide_excel_formulas 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": {
    "hide_excel_formulas": {
      "limits": [
        {
          "counter": "hide_excel_formulas_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 Office MCP Server, so you can run agents against it safely.

FAQ

Questions about hide_excel_formulas

What does the hide_excel_formulas tool do? +

隐藏/显示 Excel 公式. It is categorised as a Write tool in the Office MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on hide_excel_formulas? +

Register the Office MCP Server MCP server in PolicyLayer and add a rule for hide_excel_formulas: 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 Office MCP Server. Nothing to install.

What risk level is hide_excel_formulas? +

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

Can I rate-limit hide_excel_formulas? +

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

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

hide_excel_formulas is provided by the Office MCP Server MCP server (walkingzzzy/office-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.