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create_calendar_event

Create calendar events in macOS Calendar using AI agents. Schedule meetings and appointments directly from Claude, Cursor, or Windsurf while keeping all data on your Mac.

Instructions

Create a new calendar event

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • server.js:82-86 (registration)
    Tool registration loop that registers all tools including 'create_calendar_event' with a stub implementation that returns a message indicating this is an inspection stub
    for (const [name, desc] of TOOLS) {
      server.tool(name, desc, {}, async () => ({
        content: [{ type: "text", text: "This is an inspection stub. Install Pilot MCP on macOS: npx -y local-mcp@latest setup" }],
      }));
    }
  • TOOLS array containing tool definitions including 'create_calendar_event' at index 9, which maps the tool name to its description
    const TOOLS = [
      ["list_emails", "List emails from Mail.app inbox with optional filters"],
      ["read_email", "Read full email content by ID"],
      ["search_emails", "Search emails by keyword, sender, or date range"],
      ["send_email", "Compose and send a new email"],
      ["reply_email", "Reply to an existing email"],
      ["move_email", "Move email to a different mailbox"],
      ["save_attachment", "Save email attachment to disk"],
      ["list_calendar_names", "List available calendars"],
      ["list_calendar_events", "List calendar events for a date range"],
      ["create_calendar_event", "Create a new calendar event"],
      ["delete_calendar_event", "Delete a calendar event with preview"],
      ["list_reminders", "List reminders from a specific list"],
      ["list_reminder_lists", "List all reminder lists"],
      ["create_reminder", "Create a new reminder"],
      ["complete_reminder", "Mark a reminder as complete"],
      ["list_contacts", "List contacts from the address book"],
      ["search_contacts", "Search contacts by name, email, or phone"],
      ["get_contact", "Get full contact details by name"],
      ["list_notes", "List notes from Apple Notes"],
      ["read_note", "Read full note content"],
      ["create_note", "Create a new note in Apple Notes"],
      ["search_notes", "Search notes by keyword"],
      ["list_message_chats", "List recent iMessage conversations"],
      ["read_messages", "Read messages from a conversation"],
      ["search_messages", "Search iMessages by keyword"],
      ["list_omnifocus_tasks", "List tasks from OmniFocus"],
      ["list_omnifocus_projects", "List OmniFocus projects"],
      ["create_omnifocus_task", "Create a new task in OmniFocus"],
      ["complete_omnifocus_task", "Mark an OmniFocus task complete"],
      ["search_omnifocus_tasks", "Search OmniFocus tasks"],
      ["list_omnifocus_tags", "List OmniFocus tags"],
      ["outlook_list_emails", "List emails from Microsoft Outlook"],
      ["outlook_read_email", "Read an Outlook email"],
      ["outlook_search_emails", "Search Outlook emails"],
      ["outlook_send_email", "Send email via Outlook"],
      ["outlook_list_events", "List Outlook calendar events"],
      ["outlook_create_event", "Create Outlook calendar event"],
      ["onedrive_list_files", "List files and folders in OneDrive"],
      ["onedrive_read_file", "Read file content from OneDrive"],
      ["onedrive_search_files", "Search files in OneDrive"],
      ["onedrive_write_file", "Write or upload file to OneDrive"],
      ["onedrive_delete_file", "Delete file from OneDrive"],
      ["onedrive_move_file", "Move or rename file in OneDrive"],
      ["finder_list", "List files in a Finder directory"],
      ["finder_search", "Search files using Spotlight"],
      ["pdf_read", "Read text content from a PDF file"],
      ["word_read", "Read content from a Word document"],
      ["word_create", "Create a new Word document"],
      ["word_append", "Append content to a Word document"],
      ["excel_read", "Read data from an Excel spreadsheet"],
      ["excel_create", "Create a new Excel spreadsheet"],
      ["excel_write_cell", "Write data to Excel cells"],
      ["ppt_read", "Read content from a PowerPoint file"],
      ["ppt_create", "Create a new PowerPoint presentation"],
      ["teams_list_chats", "List Microsoft Teams chat conversations"],
      ["teams_read_chat_messages", "Read messages from a Teams chat"],
      ["teams_list_teams", "List Teams and their channels"],
      ["teams_list_channels", "List channels in a Teams team"],
      ["teams_read_channel_messages", "Read messages from a Teams channel"],
      ["list_safari_bookmarks", "List Safari bookmarks"],
      ["list_accounts", "List configured email and calendar accounts"],
      ["create_email_folder", "Create a new email folder/mailbox"],
      ["diagnose", "Run diagnostic checks on all connected services"],
      ["report_bug", "Report a bug or issue to the development team"],
      ["request_feature", "Request a new feature"],
      ["request_integration", "Request integration with an unsupported app"],
    ];
Behavior1/5

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

With no annotations provided, the description carries the full burden of disclosing behavioral traits but offers none. It does not mention side effects, idempotency, conflict handling (e.g., overlapping events), or authentication requirements.

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

Conciseness3/5

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

The description is extremely concise (four words), but this brevity reflects under-specification rather than efficient information density. No critical information is front-loaded because none is provided.

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?

Despite having zero schema parameters, the description is inadequate for a creation tool. It fails to explain how event details (title, time, etc.) are specified given the empty parameter schema, nor does it describe success/failure behaviors or return values.

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

Parameters4/5

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

The input schema contains zero parameters, which establishes a baseline score of 4 per evaluation rules. There are no parameters requiring semantic clarification beyond the schema.

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

Purpose2/5

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

The description 'Create a new calendar event' is essentially a tautology that restates the tool name with minimal elaboration. While it identifies the verb and resource, it fails to distinguish this tool from sibling 'outlook_create_event' or specify which calendar system (e.g., Apple Calendar) it targets.

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

Usage Guidelines1/5

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

No guidance provided on when to use this tool versus alternatives like 'outlook_create_event', nor any mention of prerequisites such as calendar permissions, default calendar selection, or required event fields.

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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