appendSpreadsheetRows · Google Workspace MCP Server MCP

WHAT IT DOES

What appendSpreadsheetRows does on Google Workspace MCP Server

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

WHY IT NEEDS A POLICY

Why appendSpreadsheetRows needs a policy

This tool adds new rows to an existing spreadsheet, which is a reversible write operation. It creates new data but does not delete or overwrite existing content. Misuse could result in large amounts of unwanted data being appended, but the action is reversible by deleting the appended rows.

From the tool's definition Appends rows of data to the end of a sheet in a Google Spreadsheet

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

appendSpreadsheetRows Rate-limited

appendSpreadsheetRows 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": {
    "appendSpreadsheetRows": {
      "limits": [
        {
          "counter": "appendspreadsheetrows_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 Workspace MCP Server, so you can run agents against it safely.

FAQ

Questions about appendSpreadsheetRows

What does the appendSpreadsheetRows tool do? +

Appends rows of data to the end of a sheet in a Google Spreadsheet. It is categorised as a Write tool in the Google Workspace 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 appendSpreadsheetRows? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for appendSpreadsheetRows: 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 Workspace MCP Server. Nothing to install.

What risk level is appendSpreadsheetRows? +

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

Can I rate-limit appendSpreadsheetRows? +

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

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

appendSpreadsheetRows is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.