create-folder · Outlook Assistant MCP: Risk & Policy

WHAT IT DOES

What create-folder does on Outlook Assistant

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

WHY IT NEEDS A POLICY

Why create-folder needs a policy

This tool creates a new mail folder, which is a reversible write operation. The user can delete the folder afterward if needed. It has no destructive, financial, or code execution component, and the blast radius of an AI agent creating unwanted folders is minimal—primarily organizational clutter or minor user confusion. This is a standard write-class operation.

From the tool's definition Tool name 'create-folder' and description 'Creates a new mail folder' indicate creation of a new organizational structure for emails.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-folder Rate-limited

create-folder 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": {
    "create-folder": {
      "limits": [
        {
          "counter": "create-folder_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Outlook Assistant, so you can run agents against it safely.

FAQ

Questions about create-folder

What does the create-folder tool do? +

Creates a new mail folder. It is categorised as a Write tool in the Outlook Assistant MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-folder? +

Register the Outlook Assistant MCP server in PolicyLayer and add a rule for create-folder: 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 Assistant. Nothing to install.

What risk level is create-folder? +

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

Can I rate-limit create-folder? +

Yes. Add a rate_limit block to the create-folder 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 create-folder completely? +

Set action: deny in the PolicyLayer policy for create-folder. 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 create-folder? +

create-folder is provided by the Outlook Assistant MCP server (titanzero/outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.