Art Points, commonly referred to as AP, are a game mechanic in Xenoblade Chronicles, similar to EXP and SP; however, instead of being used immediately to level up characters, they are left for the player to manually level up the arts they want, and can be saved for as long as desired. AP can be earned by battling and discovering . A maximum of 999,999 AP can be held at any given time. AP cannot be spent if an Art has reached its maximum level, and the maximum can be extended with the use of Art Books. See Leveling Battle Arts for more information on this.