Techniques are disclosed herein for changing a user's avatar attributes based on information that is pertinent to the user and that comes from a variety of sources. The user's electronic device may contain a multitude of information about the user, their lifestyle, their current mood, etc. Embodiments provide an application programming interface (API) that allows various applications on the user's electronic device, or elsewhere, to communicate with an avatar platform such that avatar attributes may be changed based on information from a wide variety of applications.