A method and an apparatus for wireless communication are provided. In one aspect, the apparatus may be a user equipment (UE), base station, or access point. The apparatus broadcasts peer discovery information in a high-level expression data structure that supports multiple discovery technologies from a variety of wireless networks. By using the high-level expression data, the apparatus may use a single, unified discovery application programming interface for signaling the presence of any supplemental cross-technology discovery information as such information became available. In another aspect, the apparatus may be a UE. The apparatus receives the broadcasted high-level expression data in a peer discovery signal and processes the data.