createGmailDraft · Google Workspace MCP Server MCP

WHAT IT DOES

What createGmailDraft does on Google Workspace MCP Server

AI agents use createGmailDraft 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 createGmailDraft needs a policy

This tool creates or modifies data (a new draft email) in a reversible manner - drafts can be edited, discarded, or deleted without sending. It does not execute arbitrary code, delete data irreversibly, move money, or read/query existing data. It falls squarely in the Write category.

From the tool's definition "Create a draft email in Gmail" - this creates new email content that is stored in the user's Gmail account. The description explicitly states it supports attachments and threading, confirming it modifies Gmail state by adding a new draft message.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

createGmailDraft Rate-limited

createGmailDraft 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": {
    "createGmailDraft": {
      "limits": [
        {
          "counter": "creategmaildraft_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 createGmailDraft

What does the createGmailDraft tool do? +

Create a draft email in Gmail. Supports threading by providing replyToMessageId to create a draft reply. Supports attachments by providing base64-encoded file data. 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 createGmailDraft? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for createGmailDraft: 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 createGmailDraft? +

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

Can I rate-limit createGmailDraft? +

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

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

createGmailDraft is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.