gdrive_update_file · MCP Google Drive Server MCP

WHAT IT DOES

What gdrive_update_file does on MCP Google Drive Server

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

WHY IT NEEDS A POLICY

Why gdrive_update_file needs a policy

Updating file content is a Write operation because it modifies data reversibly. While this could potentially overwrite important information, the action is not destructive (reversible via version history in Google Drive), does not execute arbitrary code, and does not involve financial transactions.

From the tool's definition Tool description states 'Update the content of an existing text file' — a reversible modification operation. Server description confirms this is among supported operations: 'create, update, delete, share, and manage permissions.'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gdrive_update_file Rate-limited

gdrive_update_file 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_update_file": {
      "limits": [
        {
          "counter": "gdrive_update_file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MCP Google Drive Server, so you can run agents against it safely.

FAQ

Questions about gdrive_update_file

What does the gdrive_update_file tool do? +

Update the content of an existing text file in Google Drive. It is categorised as a Write tool in the MCP Google Drive 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_update_file? +

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

What risk level is gdrive_update_file? +

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

Can I rate-limit gdrive_update_file? +

Yes. Add a rate_limit block to the gdrive_update_file 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_update_file completely? +

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

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