Connects Claude to Google Calendar through Membrane's API wrapper, which handles OAuth and credential refresh automatically. You get natural language action search to find what you need (create events, check free/busy times, quick-add from text strings), then run them through the CLI without touching tokens or API keys. When pre-built actions don't cut it, the proxy lets you hit Calendar's API directly while Membrane still manages auth headers. Free tier works fine. The setup flow is a bit involved with connection states and polling, but once you're past that it's straightforward for calendar automation.
npx skills add https://github.com/membranedev/application-skills --skill google-calendar