Generation of real-time trigger-based digital feed

At least one aspect of this technical solution is directed to a system for invoking account opportunities for support accounts, the system including a data processing system comprising memory and one or more processors to receive, from one or more external data sources, a plurality of opportunity events indicating modifications for candidate electronic transactions, select, in response to receipt of the plurality of opportunity events, a participant object including a support service identifier associated with a support service, and a participant service identifier associated with a participant service, filter the plurality of opportunity events based at least on a first opportunity metric associated with the participant object to construct a plurality of opportunity objects, rank the plurality of opportunity objects based at least on a determination that the opportunity object satisfies a second opportunity metric associated with the participant object, transmit, to a computing device linked with the participant object, the ranked plurality of opportunity objects, receive, from the computing device, a selection of one or more of the ranked plurality of opportunity objects, generate, responsive to the selection of the one or more of the ranked opportunity objects, a link between the participant object and the support service, and authorize the participant object to the support service based on the link.