Google Calendar

Connects to Google Calendar's API to handle scheduling operations directly from Claude. You get the standard calendar workflows: list events, create and update meetings, check availability with free/busy queries, and manage multiple calendars. The usage stats show most people are listing events and calendars, with a decent amount of event creation and patching. It handles time zones and quick adds, plus there's a find_free_slots tool that seems useful for coordinating meetings. Smithery manages the OAuth flow so you don't have to deal with token refresh yourself. Reaches 100% uptime over the past month with 56ms median latency, so it's reliable enough for production use.