send-draft · Outlook MCP Server MCP: Risk & Policy

WHAT IT DOES

What send-draft does on Outlook MCP Server

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

WHY IT NEEDS A POLICY

Why send-draft needs a policy

This tool creates/modifies data (sends an email message) but does not delete or overwrite data irreversibly, nor does it execute arbitrary code or move money. Sending an email is reversible in principle (can be recalled or addressed in follow-up), making it Write rather than Destructive.

From the tool's definition Tool name 'send-draft' combined with description 'Sends an existing draft email' indicates the tool modifies email state by transitioning a draft from unsent to sent status.

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 Outlook MCP Server, so you can run agents against it safely.

FAQ

Questions about send-draft

What does the send-draft tool do? +

Sends an existing draft email. It is categorised as a Write tool in the Outlook 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 Outlook 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 Outlook 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 Outlook MCP Server MCP server (peacockery-studio/outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.