script_create_file · Gworkspace MCP: Risk & Policy

WHAT IT DOES

What script_create_file does on Gworkspace

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

WHY IT NEEDS A POLICY

Why script_create_file needs a policy

This tool creates new script files within a Google Apps Script project. While not destructive (files can be deleted), this is a Write operation that modifies the project state by adding a new artifact.

From the tool's definition Tool creates a new .gs file in the script project. The verb 'create' and description 'Create a new' indicate irreversible addition of a new resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

script_create_file Rate-limited

script_create_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": {
    "script_create_file": {
      "limits": [
        {
          "counter": "script_create_file_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 Gworkspace, so you can run agents against it safely.

FAQ

Questions about script_create_file

What does the script_create_file tool do? +

Create a new .gs file in the script project. It is categorised as a Write tool in the Gworkspace MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on script_create_file? +

Register the Gworkspace MCP server in PolicyLayer and add a rule for script_create_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 Gworkspace. Nothing to install.

What risk level is script_create_file? +

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

Can I rate-limit script_create_file? +

Yes. Add a rate_limit block to the script_create_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 script_create_file completely? +

Set action: deny in the PolicyLayer policy for script_create_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 script_create_file? +

script_create_file is provided by the Gworkspace MCP server (leoonic/gworkspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.