Privacy policy

Last updated: 15 November 2026.

Hermes COS is a personal assistant used by its owner, not a public service. Its connected Google account is authorised only for Gmail read access, Calendar event read access, and read access to the account's calendar list.

What it accesses and why

When the owner requests it through Telegram, the assistant searches or reads selected Gmail conversations, or reads events from calendars in the connected account. It uses that information to answer the owner's request and provide source links. It does not send email, modify mail, or write calendar events.

Where the data goes

Google API responses are processed by the owner's Raspberry Pi. Relevant results and the owner's request are sent to the configured hosted AI model provider to produce an answer, and the answer is delivered through Telegram. Google, the model provider, and Telegram process data under their own terms. The assistant does not sell Google user data or use it for advertising.

Storage and control

Google OAuth credentials are stored privately on the owner's Raspberry Pi, outside this website and its source files. The assistant may keep local session history, memory and backups. The owner controls that local installation and can revoke the app's Google access in their Google Account settings. This public website has no sign-in, forms or tracking configured by the owner; its hosting provider may process normal web request logs.

For questions about this personal app, use the support email shown on its Google consent screen.