smart_forward_email_unsafe · Google MCP: Risk & Policy

WHAT IT DOES

What smart_forward_email_unsafe does on Google

AI agents invoke smart_forward_email_unsafe to trigger actions in Google. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why smart_forward_email_unsafe needs a policy

This tool sends/forwards an email immediately without any confirmation step, triggering an external communication operation. It is marked explicitly unsafe, meaning an AI agent could misuse it to forward sensitive emails to unintended recipients without any human review.

From the tool's definition 'Forward email immediately without confirmation' and the explicit '⚠️ UNSAFE' warning in the description

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

smart_forward_email_unsafe Rate-limited

smart_forward_email_unsafe stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "smart_forward_email_unsafe": {
      "limits": [
        {
          "counter": "smart_forward_email_unsafe_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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, so you can run agents against it safely.

FAQ

Questions about smart_forward_email_unsafe

What does the smart_forward_email_unsafe tool do? +

⚠️ UNSAFE: Forward email immediately without confirmation (use names or emails). It is categorised as a Execute tool in the Google MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on smart_forward_email_unsafe? +

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

What risk level is smart_forward_email_unsafe? +

smart_forward_email_unsafe is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit smart_forward_email_unsafe? +

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

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

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