unstar_gmail · Google Connections MCP: Risk & Policy

WHAT IT DOES

What unstar_gmail does on Google Connections

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

WHY IT NEEDS A POLICY

Why unstar_gmail needs a policy

Removing a star from Gmail messages is a reversible metadata modification — the star can be re-added at any time. No data is deleted, no code is executed, and no financial action is taken. This is a straightforward write/update operation with minimal blast radius.

From the tool's definition Remove star from one or more Gmail messages

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unstar_gmail Rate-limited

unstar_gmail 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_gmail": {
      "limits": [
        {
          "counter": "unstar_gmail_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 Connections, so you can run agents against it safely.

FAQ

Questions about unstar_gmail

What does the unstar_gmail tool do? +

Remove star from one or more Gmail messages. It is categorised as a Write tool in the Google Connections 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_gmail? +

Register the Google Connections MCP server in PolicyLayer and add a rule for unstar_gmail: 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 Connections. Nothing to install.

What risk level is unstar_gmail? +

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

Can I rate-limit unstar_gmail? +

Yes. Add a rate_limit block to the unstar_gmail 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_gmail completely? +

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

unstar_gmail is provided by the Google Connections MCP server (michaelzrork/google-connections-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.