Academic libraries providing chat reference services have a range of options for where and how library users can engage with chat providers. These entry points can be static or proactively invite users into the service. The study compares the URLs from which users entered chat reference at three large public research libraries the United States. The URLs show where users were when they sought assistance with library tasks. This exploratory investigation is important for extending knowledge of user help-seeking behavior and how chat service configuration may impact use. Data are variables related to chat interactions (n=19,839