In agile software development (ASD) teams, it is essential to overcome knowledge boundaries to prevent product delays. The theory of boundary objects suggests that using the objects can help bridging knowledge boundaries within ASD teams in collaborations. Although prior research has reported that the use of boundary objects within traditional software development (TSD) teams is helpful, this topic in agile background still needs more exploration. Additionally, findings on the effects of boundary objects in bridging knowledge gaps are mixed. In this in-progress study, we conceptually explored the role of project management tools as boundary objects in ASD teams. Empirical study was conducted by using eight student teams, each consisting of four to five team members, which were asked to deliver a software using project management tools. Preliminary data analysis showed that PMTs indeed have positive influence in agile context.