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merajmehrabi

Outlook Calendar MCP

by merajmehrabi

delete_event

Remove a specific calendar event using its unique ID. The tool integrates with Outlook Calendar MCP to locally manage and delete events directly from Windows systems, ensuring data privacy.

Instructions

Delete a calendar event by its ID

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
calendarNoCalendar name (optional)
eventIdYesEvent ID to delete

Implementation Reference

  • The handler function for the 'delete_event' MCP tool. It receives eventId and optional calendar, calls the deleteEvent helper, and returns a formatted success or error response.
    handler: async ({ eventId, calendar }) => {
      try {
        const result = await deleteEvent(eventId, calendar);
        return {
          content: [
            {
              type: 'text',
              text: result.success 
                ? `Event deleted successfully` 
                : `Failed to delete event`
            }
          ]
        };
      } catch (error) {
        return {
          content: [
            {
              type: 'text',
              text: `Error deleting event: ${error.message}`
            }
          ],
          isError: true
        };
      }
    }
  • Input schema for the 'delete_event' tool, specifying the required 'eventId' parameter and optional 'calendar'.
    inputSchema: {
      type: 'object',
      properties: {
        eventId: {
          type: 'string',
          description: 'Event ID to delete'
        },
        calendar: {
          type: 'string',
          description: 'Calendar name (optional)'
        }
      },
      required: ['eventId']
    },
  • Helper function 'deleteEvent' that invokes the 'deleteEvent.vbs' script execution via executeScript with provided eventId and calendar.
    export async function deleteEvent(eventId, calendar) {
      return executeScript('deleteEvent', { eventId, calendar });
    }
  • src/index.js:34-36 (registration)
    Registration of the Outlook tools object (including 'delete_event') by calling defineOutlookTools() and storing in this.tools, which is then used in MCP request handlers.
    // Define the tools
    this.tools = defineOutlookTools();
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden but lacks behavioral details. It states the action ('Delete') but does not disclose critical traits like required permissions, whether deletion is permanent or reversible, error handling (e.g., for invalid IDs), or side effects (e.g., notifications to attendees).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence with zero waste. It is front-loaded with the core action and resource, making it easy to parse quickly without unnecessary elaboration.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a destructive tool with no annotations and no output schema, the description is incomplete. It lacks context on permissions, consequences, error cases, or return values, leaving significant gaps for safe and effective use by an AI agent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents both parameters ('calendar' as optional name, 'eventId' as required ID). The description adds no additional meaning beyond implying 'eventId' is used for deletion, aligning with but not enriching the schema. Baseline 3 is appropriate when schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Delete') and resource ('a calendar event'), with precise targeting ('by its ID'). It distinguishes from siblings like 'create_event', 'update_event', and 'list_events' by focusing on removal rather than creation, modification, or listing.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It does not mention prerequisites (e.g., needing an existing event ID), exclusions (e.g., not for recurring events), or comparisons to siblings like 'update_event' for modifications instead of deletion.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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