create-calendar-event

Server Outlook OAuth MCP Server leonine-studios/useful-outlook-mcp

Category Write

Risk class Medium

Parameters 00 required

WHAT IT DOES

What create-calendar-event does on Outlook OAuth MCP Server

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

WHY IT NEEDS A POLICY

Why create-calendar-event needs a policy

This tool creates and adds data to the user's calendar, which is reversible (events can be deleted via delete-calendar-event). It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Creates a new calendar event. Description explicitly states 'Create a new calendar event' and details event creation with Teams meeting links and location settings. The tool modifies the user's calendar by adding new events.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-calendar-event Rate-limited

create-calendar-event 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-calendar-event": {
      "limits": [
        {
          "counter": "create-calendar-event_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 OAuth MCP Server, so you can run agents against it safely.

FAQ

Questions about create-calendar-event

What does the create-calendar-event tool do? +

Create a new calendar event. TEAMS MEETINGS: - Set isOnlineMeeting=true (default) to auto-generate Teams meeting link - Link appears in onlineMeetingUrl field and is included in invitations IN-PERSON MEETINGS: - Set isOnlineMeeting=false for physical meetings - Set location field to room name/address. It is categorised as a Write tool in the Outlook OAuth 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 create-calendar-event? +

Register the Outlook OAuth MCP Server MCP server in PolicyLayer and add a rule for create-calendar-event: 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 OAuth MCP Server. Nothing to install.

What risk level is create-calendar-event? +

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

Can I rate-limit create-calendar-event? +

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

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

create-calendar-event is provided by the Outlook OAuth MCP Server MCP server (leonine-studios/useful-outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.