gdrive_append_sheet · Google Drive MCP Server MCP

WHAT IT DOES

What gdrive_append_sheet does on Google Drive MCP Server

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

WHY IT NEEDS A POLICY

Why gdrive_append_sheet needs a policy

Appending rows to a spreadsheet is a reversible modification (Write category). Severity is medium because unintended data additions could corrupt spreadsheets or introduce incorrect data, but the changes can be undone. The confidence is high because the tool's purpose is explicitly stated as data modification, though the discrepancy with the server's 'read-only' description is noteworthy.

From the tool's definition Tool name 'gdrive_append_sheet' and description 'Append rows after existing data in a Google Sheets spreadsheet' indicate data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gdrive_append_sheet Rate-limited

gdrive_append_sheet 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": {
    "gdrive_append_sheet": {
      "limits": [
        {
          "counter": "gdrive_append_sheet_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 Drive MCP Server, so you can run agents against it safely.

FAQ

Questions about gdrive_append_sheet

What does the gdrive_append_sheet tool do? +

Append rows after existing data in a Google Sheets spreadsheet. It is categorised as a Write tool in the Google Drive 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 gdrive_append_sheet? +

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

What risk level is gdrive_append_sheet? +

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

Can I rate-limit gdrive_append_sheet? +

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

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

gdrive_append_sheet is provided by the Google Drive MCP Server MCP server (wagnerlabs/gdrive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.