Hermes is a private personal-automation application operated for the account owner. It connects to the owner’s Google account to carry out requested tasks involving Gmail, Google Drive, Docs, Sheets, Calendar, and Contacts.
The application is not offered as a public service and does not sell or share Google user data.
Access is used only when the account owner requests an automation, such as searching files, managing documents, reviewing or sending email, and working with calendar data.