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Connect an AI assistant

You can connect an AI assistant (Claude by Anthropic; ChatGPT via Developer mode) to your calendars. It then answers questions about your availability — “Am I free Thursday at 2pm?”, “Where do I have two hours in one block this week?” — and, when you ask, creates events too.

Supported today are Claude, Claude Code and ChatGPT – Gemini and Mistral are coming soon. For an overview with all benefits, see the product page.

What makes it different: you decide per calendar what the assistant may see and do. Calendars you don’t share simply don’t exist for it.

What the assistant can do

Section titled “What the assistant can do”
  • Read availability — straight from the provider (Google, Outlook, iCloud, GMX, …), not from a copy. You set how much detail it gets per calendar: only whether you’re busy, title and time, or full details. → What the assistant sees
  • Create and manage events (from the Basic plan) — when you ask, it adds events and manages the ones it created itself. Never your existing ones. → Write access

What stays in your hands

Section titled “What stays in your hands”
  • You pick the calendars one by one and set the detail level (and optionally write access) for each.
  • You can revoke access at any time — one click on the “AI assistant” page and the access is dead immediately. There’s also a kill switch that revokes every access at once.
  • Every query is logged — only that and what was queried, never the content of your events. On Business you can export the log as CSV.
  • Access expires automatically if it goes unused for a long time.

Connect the assistant

Section titled “Connect the assistant”

Pick your assistant — every route leads to the same grant:

Revoke access

Section titled “Revoke access”

You can cut off an assistant’s access yourself at any time — the revoke in Kalender Sync is the authoritative one, regardless of what happens in the assistant itself:

  • Individually: under AI assistant, click Revoke on that access. Effective immediately; all of that access’s tokens are dead.
  • Kill switch: one click revokes every access at once.

Removing a connector only in the assistant (Claude, ChatGPT) disconnects it there locally — the access at our end stays until you revoke it in Kalender Sync (or until it expires automatically after long disuse).