insert_rows · Excel MCP Server MCP: Risk & Policy

WHAT IT DOES

What insert_rows does on Excel MCP Server

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

WHY IT NEEDS A POLICY

Why insert_rows needs a policy

This tool modifies spreadsheet structure and content placement by inserting rows, which constitutes data modification. It is reversible (unlike Destructive tools), does not execute arbitrary code (unlike Execute), and has no financial consequences. The medium severity reflects that misuse could disrupt data integrity or shift critical information, but the changes are recoverable.

From the tool's definition insert_rows will insert one or more rows into an Excel workbook, modifying the spreadsheet structure. The tool is reversible (rows can be deleted), but directly alters data organization and potentially shifts existing content, satisfying the Write category…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

insert_rows Rate-limited

insert_rows 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": {
    "insert_rows": {
      "limits": [
        {
          "counter": "insert_rows_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 Excel MCP Server, so you can run agents against it safely.

FAQ

Questions about insert_rows

What does the insert_rows tool do? +

Insert one or more rows starting at the specified row. It is categorised as a Write tool in the Excel 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 insert_rows? +

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

What risk level is insert_rows? +

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

Can I rate-limit insert_rows? +

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

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

insert_rows is provided by the Excel MCP Server MCP server (thibaudvandendooren-acumen/excel-mcp-server-v2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.