As of Camel 2.12 the EndpointCompleter API is an optional SPI interface for Component implementors. It provides a completion hook; rather like bash tab completion, or the completion in the Karaf shell when typing commands.
Nice behaving components should implement EndpointCompleter and its completion method. The method is given a ComponentConfiguration object which wraps up all the various configuration values (and can be used to create a new Endpoint instance if required - or inject values into an exemplar internal instance).
The completeEndpointPath() method then returns a list of Strings of the matching values available.
For example here's the implementation code in the FileComponent to implement completeEndpointPath().
Some example implementations include: