drive_comment · Google Drive MCP Server MCP: Risk & Policy

WHAT IT DOES

What drive_comment does on Google Drive MCP Server

AI agents use drive_comment 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 drive_comment needs a policy

The tool creates new content (a comment) within a file, which is a reversible modification. It does not delete data (would be Destructive), execute arbitrary operations (would be Execute), nor retrieve data without side effects (would be Read). Comments can be edited or deleted later, making this a Write operation.

From the tool's definition Tool name 'drive_comment' and description 'Add a comment to a file' indicate a create operation that modifies file metadata by appending new data (a comment) to a document.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

drive_comment Rate-limited

drive_comment 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": {
    "drive_comment": {
      "limits": [
        {
          "counter": "drive_comment_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 drive_comment

What does the drive_comment tool do? +

Add a comment to a file. 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 drive_comment? +

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

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

Can I rate-limit drive_comment? +

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

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

drive_comment is provided by the Google Drive MCP Server MCP server (rishipradeep-think41/google-drive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.