The contract contact is a consumable item that allows the player to summon Sojobo (contracts) to an Uncharted Isle in order to turn in a contract and get a new one. Sojobo will remain on the island until the player leaves or logs out. Attempting to summon him more than once on a single Uncharted Isle will yield the message: You have already summoned your contract giver to this island.
Contract contacts can be bought from the Waiko Reward Shop for 10 Chimes each. They can be equipped in the player's pocket slot, and up to 25 can be stored inside (and used from) the Arc Journal.