send_draft · Google Workspace MCP Server MCP: Risk & Policy

WHAT IT DOES

What send_draft does on Google Workspace MCP Server

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

WHY IT NEEDS A POLICY

Why send_draft needs a policy

This tool creates/sends data (an email) which is reversible in the sense that emails can be unsent within a short window in Gmail, or marked as spam/deleted afterward. It does not execute arbitrary code, delete data permanently, or move money.

From the tool's definition Tool name is 'send_draft' and description states it 'Send an existing draft', which implies sending a composed but unsent email message in Gmail. This modifies the state of a draft by converting it to a sent message and delivers it to recipients.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_draft Rate-limited

send_draft 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": {
    "send_draft": {
      "limits": [
        {
          "counter": "send_draft_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 Workspace MCP Server, so you can run agents against it safely.

FAQ

Questions about send_draft

What does the send_draft tool do? +

Send an existing draft. It is categorised as a Write tool in the Google Workspace 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 send_draft? +

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

What risk level is send_draft? +

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

Can I rate-limit send_draft? +

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

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

send_draft is provided by the Google Workspace MCP Server MCP server (pbulbule13/google-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.