appendRows · Google Docs, Drive & Sheets MCP Server MCP

WHAT IT DOES

What appendRows does on Google Docs, Drive & Sheets MCP Server

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

WHY IT NEEDS A POLICY

Why appendRows needs a policy

The tool modifies spreadsheet data by adding new rows, which is a write operation. It is not destructive (data is not deleted or overwritten irreversibly), not executable (no code/command execution), not financial, and not merely a read.

From the tool's definition Tool name is 'appendRows' and description states it 'Appends rows to the end of a sheet' and 'Data is added after the last row with content'. This is a reversible modification operation that creates or inserts data into a spreadsheet.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

appendRows Rate-limited

appendRows 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": {
    "appendRows": {
      "limits": [
        {
          "counter": "appendrows_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 Docs, Drive & Sheets MCP Server, so you can run agents against it safely.

FAQ

Questions about appendRows

What does the appendRows tool do? +

Appends rows to the end of a sheet. Data is added after the last row with content in the specified range. It is categorised as a Write tool in the Google Docs, Drive & Sheets 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 appendRows? +

Register the Google Docs, Drive & Sheets MCP Server MCP server in PolicyLayer and add a rule for appendRows: 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 Docs, Drive & Sheets MCP Server. Nothing to install.

What risk level is appendRows? +

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

Can I rate-limit appendRows? +

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

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

appendRows is provided by the Google Docs, Drive & Sheets MCP Server MCP server (rulords/google-docs-mcp-personal). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.