save_draft · Email MCP Server MCP: Risk & Policy

WHAT IT DOES

What save_draft does on Email MCP Server

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

WHY IT NEEDS A POLICY

Why save_draft needs a policy

This tool creates or modifies draft email objects in Gmail, which is a Write operation. It does not delete data (Destructive), does not move money (Financial), does not execute arbitrary code (Execute), and does not retrieve data without side effects (Read).

From the tool's definition Tool name 'save_draft' and description 'Save a draft email to Gmail' indicate creation/modification of email data in a reversible manner (drafts can be edited or deleted).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_draft Rate-limited

save_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": {
    "save_draft": {
      "limits": [
        {
          "counter": "save_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 Email MCP Server, so you can run agents against it safely.

FAQ

Questions about save_draft

What does the save_draft tool do? +

Save a draft email to Gmail. It is categorised as a Write tool in the Email 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 save_draft? +

Register the Email MCP Server MCP server in PolicyLayer and add a rule for save_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 Email MCP Server. Nothing to install.

What risk level is save_draft? +

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

Can I rate-limit save_draft? +

Yes. Add a rate_limit block to the save_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 save_draft completely? +

Set action: deny in the PolicyLayer policy for save_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 save_draft? +

save_draft is provided by the Email MCP Server MCP server (sgroi-l/email-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

save_draft is one line of Email MCP Server's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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