This is the ALPS document for an adhoc specification called DISCO (Discovering Interoperative Services for Continuous Operation). DISCO is a simple language for managing the adding/removing of services as well as the ability to search ("find") and make connections with ("bind") registered services. Allows services to register/unreg themselves in a shared, searchable registry of available services. Allows services (including the registry) to perform a "ping" health-check Allows services to "find/bind" to other services based on profile and mediaType criteria See http://open-disco.org for details. returns a single registered item register a service in the shared registry unregister a service in the shared registry sends a renewal request *from* a running service to the registry send a health-check ping *to* a running service ask for a filtered list of registered services that match the supplied criteria assert a claim to using a service (sent to the registry)