appendExcelRows · Google Workspace MCP Server MCP

WHAT IT DOES

What appendExcelRows does on Google Workspace MCP Server

AI agents use appendExcelRows 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 appendExcelRows needs a policy

This tool adds new rows to an existing Excel file, which is a reversible write operation. It modifies data by appending, but does not delete or overwrite existing content, placing it firmly in the Write category. Misuse could result in unwanted data being added to files, hence medium severity.

From the tool's definition Appends rows to an Excel-format file (.xlsx or .xls) on Google Drive

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

appendExcelRows Rate-limited

appendExcelRows 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": {
    "appendExcelRows": {
      "limits": [
        {
          "counter": "appendexcelrows_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 appendExcelRows

What does the appendExcelRows tool do? +

Appends rows to an Excel-format file (.xlsx or .xls) on Google Drive. Similar to appendSpreadsheetRows but preserves Excel format. 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 appendExcelRows? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for appendExcelRows: 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 appendExcelRows? +

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

Can I rate-limit appendExcelRows? +

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

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

appendExcelRows 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.