Methods and apparatus for mediating user access to services over a network are described. Access is provided by a service network host to a plurality of connectors providing access to a plurality of services over the network. The services are provided by entities independent from the service network host. The connectors including a first connector are configured to communicate with a first service using a first format to retrieve or modify data associated with the first service. The first connector is further configured to identify one or more methods or data fields of the first service. The service network host is further configured to provide, to a computer associated with a user over the network, one or more directions for using the first connector to display and/or modify data from the first service over the network.