A system and methods for third-party access to a network-based system for providing location-based upcoming event information are described. The location-based upcoming event information may be accessed from the network-based system by a server-side web application implemented by a third party. The server-side web application may be configured to communicate with the network-based system that provides online marketplace and ticket fulfillment services and to generate a query based upon the location of a user and other event criteria. The server-side web application may communicate the query to the network-based system and, in response, receive location-based upcoming event information which may be displayed to a user as a list and/or information on a map. The location-based upcoming event information may comprise an aggregate of ticket inventory available from multiple online marketplaces providing the user with multiple purchasing options.