microsoft_create_calendar_event · Personal Mail MCP

WHAT IT DOES

What microsoft_create_calendar_event does on Personal Mail

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

WHY IT NEEDS A POLICY

Why microsoft_create_calendar_event needs a policy

This tool creates new calendar events, which is a write operation that modifies the user's calendar state. While calendar event creation is reversible (events can be deleted), it commits the user to a calendar obligation and could be misused by an agent to schedule fraudulent meetings, spam invitations, or disrupt the user's calendar.

From the tool's definition Tool name 'microsoft_create_calendar_event' and description 'Create a Microsoft calendar event' indicate irreversible creation of calendar data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

microsoft_create_calendar_event Rate-limited

microsoft_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": {
    "microsoft_create_calendar_event": {
      "limits": [
        {
          "counter": "microsoft_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 Personal Mail, so you can run agents against it safely.

FAQ

Questions about microsoft_create_calendar_event

What does the microsoft_create_calendar_event tool do? +

Create a Microsoft calendar event. It is categorised as a Write tool in the Personal Mail MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on microsoft_create_calendar_event? +

Register the Personal Mail MCP server in PolicyLayer and add a rule for microsoft_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 Personal Mail. Nothing to install.

What risk level is microsoft_create_calendar_event? +

microsoft_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 microsoft_create_calendar_event? +

Yes. Add a rate_limit block to the microsoft_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 microsoft_create_calendar_event completely? +

Set action: deny in the PolicyLayer policy for microsoft_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 microsoft_create_calendar_event? +

microsoft_create_calendar_event is provided by the Personal Mail MCP server (srogerf/personal-mail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.