Tribe Watchlist
Sign in (top right) to create a tribe or join one with an invite code. Your personal watchlist moves into the tribe automatically.
Enemy Watchlist0/25
Search a player and hit “Pin to watchlist” — you'll get a toast + siren the moment they log into ARK.
Steam lookups read the public community profile — private profiles only return name and avatar. When a Steam player is in ARK, the server they're on is matched against the live Wildcard server list so you can jump straight in.