Last updated: 9 November 2026
Hermes Calendar is a private tool that connects one person's assistant (the "operator") to the operator's own Google Calendar. It is not offered to the public.
Only to answer the operator's own requests: showing the agenda, finding free time, and adding or changing events in the app's own calendar. It is not used for advertising, profiling or anything unrelated to those requests.
The sign-in token is stored on the operator's private server, readable only by the service that calls Google. Event details are fetched when needed and may remain in the assistant's conversation history on that same server.
To answer a request, the assistant sends the relevant event details to the AI model provider it runs on, under that provider's terms. Apart from that, the data is not sold, shared or transferred to anyone.
Hermes Calendar's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
Access can be withdrawn at any time in the Google Account under Third-party apps and services. Deleting the app's own calendar in Google Calendar removes the events it created.
Use the support email shown on the Google sign-in screen for this app.