All of these commands are typed in chat, prefixed with @. Type @commands in-game for the full list.
Get information
@mobinfo <monster>— a monster's stats and drops@iteminfo <item>— an item's details@whodrops <item>— which monsters drop this item@whereis <monster>— where a monster spawns@rates— the server's current rates ·@time,@uptime— server time and availability
Trade
@autotrade— keep selling while offline (your stall stays open)@whosell <item>·@whobuy <item>— search player vendor stalls
Loot (autoloot)
@autoloot <%>— automatically loot based on a percentage@alootid <item>— only loot one specific item@autoloottype <type>— filter by item type
Autoloot turns off after 5 minutes of inactivity (anti-AFK). The Settings NPC in Prontera can turn it back on automatically every time you log in.
Social & guild
@channel— chat channels ·@who— online players@request— call online staff@breakguild,@changegm— manage your guild@showexp,@showzeny,@refresh— display options