unstar_file · Google Docs MCP Server MCP: Risk & Policy

WHAT IT DOES

What unstar_file does on Google Docs MCP Server

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

WHY IT NEEDS A POLICY

Why unstar_file needs a policy

Unstarring a file is a reversible metadata modification — the star can be re-added at any time. No content is deleted or overwritten, no code is executed, and no financial transaction occurs. This is a simple Write operation with low blast radius since it only affects a cosmetic/organizational marker on a file.

From the tool's definition Remove star from a file in Google Drive

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unstar_file Rate-limited

unstar_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": {
    "unstar_file": {
      "limits": [
        {
          "counter": "unstar_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 Google Docs MCP Server, so you can run agents against it safely.

FAQ

Questions about unstar_file

What does the unstar_file tool do? +

Remove star from a file in Google Drive. It is categorised as a Write tool in the Google Docs 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 unstar_file? +

Register the Google Docs MCP Server MCP server in PolicyLayer and add a rule for unstar_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 Google Docs MCP Server. Nothing to install.

What risk level is unstar_file? +

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

Can I rate-limit unstar_file? +

Yes. Add a rate_limit block to the unstar_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 unstar_file completely? +

Set action: deny in the PolicyLayer policy for unstar_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 unstar_file? +

unstar_file is provided by the Google Docs MCP Server MCP server (nickweedon/google-docs-mcp-docker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.