Techniques for onboarding new service providers based on portable service provider attributes are described. In an example, a server computing device may determine service provider attribute(s) of a service provider associated with a first merchant and associate the service provider attribute(s) with a data entry corresponding to an identifier of the service provider in a database. The server computing device may subsequently receive, from a point-of-sale device operated by a second merchant, identification data associated with the service provider and may determine the identifier of the service provider based on the identification data. Based on the identifier, the server computing device may access the service provider attribute(s) associated with the service provider from the database and may update a second merchant service inventory associated with the second merchant based on the service provider attribute(s) of the service provider.