An MCP-based server that enables natural-language interaction with macOS Calendar, turning calendar management into a conversational experience. It supports event creation, updates, schedule queries, and availability planning via MCP. Users can create events using natural phrases, choose a target calendar, add location and notes, and apply smart reminders or recurring patterns. The system supports multi-calendar workflows and can create events in calendars synced with Google Calendar when paired with iCloud. It offers smart schedule management, allowing you to query your upcoming week or ask when you’re free, with formatted time-slot suggestions. Intelligent updates let you modify events—time/date changes, calendar transfers, location and note updates, reminders, and recurrence changes. The server integrates with macOS Calendar through PyObjC and is designed for MCP-compatible clients (Claude for Desktop is shown in examples). Quick-start steps cover installing dependencies, configuring Claude, launching from the terminal to grant permissions, and starting the MCP server. Known issues include non-standard recurring schedules and potential offset issues for all-day reminders. The project emphasizes privacy and MCP compatibility.