# Calendar links (ICS)

Add a calendar published as an ICS or iCal link under Accounts → Connect an account → Calendar link. Agents can read its events and free/busy time; they cannot change it.

## Secret links
A secret link is as good as a password: Prubex stores it encrypted, never logs it, and shows it masked. Only https and webcal links are accepted.

## Freshness
Prubex reads the feed when an agent asks and keeps it for a few minutes, asking the server whether it changed. Recurring events are expanded only within the dates asked for.