formula_fill_excel · Office MCP Server MCP: Risk & Policy

WHAT IT DOES

What formula_fill_excel does on Office MCP Server

AI agents use formula_fill_excel 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 formula_fill_excel needs a policy

Formula filling in Excel is a write operation—it modifies cell contents and can affect calculations across the spreadsheet. While reversible (can be undone), it can have significant downstream effects if formulas are incorrect or reference sensitive data. This is less severe than destructive operations (which cannot be undone) but more impactful than simple data entry.

From the tool's definition Tool name 'formula_fill_excel' and description 'Excel 公式填充' (Excel formula fill) indicate the tool creates or modifies data in Excel spreadsheets by filling formula values.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

formula_fill_excel Rate-limited

formula_fill_excel 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": {
    "formula_fill_excel": {
      "limits": [
        {
          "counter": "formula_fill_excel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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 formula_fill_excel

What does the formula_fill_excel tool do? +

Excel 公式填充. 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 formula_fill_excel? +

Register the Office MCP Server MCP server in PolicyLayer and add a rule for formula_fill_excel: 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 formula_fill_excel? +

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

Can I rate-limit formula_fill_excel? +

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

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

formula_fill_excel 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.