Calendar is a Deno-based Model Context Protocol (MCP) server designed to enable large language models (LLMs) to interact with and retrieve information from macOS Calendar events. It offers a secure, read-only interface to your local calendar data, allowing LLMs to search for events, retrieve upcoming or past appointments, get details within specific date ranges, and more. This tool seamlessly integrates personal scheduling into AI applications, enhancing productivity without compromising data integrity.