Apple Calendar CLI

**Quick judgment** A strong, macOS-only CLI wrapper around Apple Calendar with good JSON support and a solid set of calendar operations (list, query, create, update, delete, free/busy). Well-suited as an automation backend for an AI assistant managing a user’s local Apple Calendar. **Key strengths** - Full event lifecycle and free/busy support cover most calendar-assistant needs. - JSON output and clear, structured flags make it straightforward to integrate and parse programmatically. - Supports multiple calendars and IDs, plus config for a default calendar. **Main risks / caveats** - **Platform lock-in:** macOS-only (uses JavaScript for Automation / Apple Calendar); not usable on other OSes. - **Destructive operations:** `delete` and `update` can irreversibly change the user’s calendar; an agent must *always* confirm details and event identity with the user before executing. - **Datetime strictness:** Requires ISO 8601-style timestamps; the agent must reliably normalize natural language times into the expected format. **Recommended scenarios** - A personal assistant on macOS that needs to answer “what’s on my schedule?”, “am I free then?”, and “schedule/reschedule this meeting” using the user’s local Apple Calendar. - Workflows that compute availability (via `freebusy`) and then automatically create meetings in the discovered free slots, after user confirmation. - Power-user or developer environments where a CLI + JSON contract is preferred over GUI or remote calendar APIs.