Agent-oriented requirement analysis focuses on determining a higher-level organization of a system that meets a given problem specification.This paper presents the FKAOS agent-oriented requirement engineering method

which helps users and system designers analyze and describe the higher-level agent-centered requirement of software systems.FKAOS extends KAOS by modeling the uncertain property of MAS.It integrates a fuzzy version of Z with the KAOS language.The diagrams of FKAOS extend the goal and responsibility diagrams of KAOS and add some new diagrams and tables to describe the agent-oriented requirement.Based on the matemodels of view diagrams

the FKAOS environment includes a goal decomposing modeling and an agent optimizing modeling to integrate the knowledge about agent-oriented software design principles

prototypical software architectures

and application domain.The paper illustrates the design in FKAOS through an example

focusing on the ability of FKAOS to provide a cooperative design environment.