The main jobs of kujishi were teaching the related parties of the lawsuit about the necessary procedures and the techniques in the court upon request from such parties, creating necessary documents on their behalf, and making settlement arrangement.
訴訟の当事者の依頼を受けて必要な手続方法や訴訟技術を教示したり、必要な書類の作成代行を行ったり、内済（和解手続）の斡旋を行うことが主な業務であった。