insert_row · Google Sheets MCP: Risk & Policy

WHAT IT DOES

What insert_row does on Google Sheets MCP

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

WHY IT NEEDS A POLICY

Why insert_row needs a policy

Inserting a row modifies spreadsheet structure and can shift existing data, but the action is fully reversible—the inserted row can be deleted to restore the original state. This makes it Write rather than Execute or Destructive. Severity is medium because unintended insertions could corrupt data organization or trigger downstream formulas, but the impact is contained to a single spreadsheet and easily undone.

From the tool's definition Tool name 'insert_row' and description 'Insert a new row at specified position in a Google Sheet' indicate data creation/modification that is reversible (rows can be deleted).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

insert_row Rate-limited

insert_row 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_row": {
      "limits": [
        {
          "counter": "insert_row_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 Google Sheets MCP, so you can run agents against it safely.

FAQ

Questions about insert_row

What does the insert_row tool do? +

Insert a new row at specified position in a Google Sheet. It is categorised as a Write tool in the Google Sheets MCP 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_row? +

Register the Google Sheets MCP server in PolicyLayer and add a rule for insert_row: 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 Google Sheets MCP. Nothing to install.

What risk level is insert_row? +

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

Can I rate-limit insert_row? +

Yes. Add a rate_limit block to the insert_row 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_row completely? +

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

insert_row is provided by the Google Sheets MCP server (roelofvheeren/final-sheet-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.