As a general policy, any form of unattended gameplay is prohibited in Guild Wars 2 . This includes:
Note that this does not mean that you cannot be away from your computer (AFK) while you are online. Idling in a city or even in the open world is not prohibited, though your character should not perform actions, participate in content, or otherwise engage with the world while you are away from your computer.
Failing to observe the above guidelines may result in the suspension or termination of a game account. ArenaNet reserves the right to suspend or terminate any account that is involved in "botting."
Communications Manager: ArenaNet
Fansite & Guild Relations; In-Game Events; Community Showcase Live