Apart from parsing, I am the API client in this instance. I'm the one making decisions from understanding what services are about.
The universal API client seems to be a kind of silver-bullet-IA in many people's mind. I feel it's both impossible and not necessary to accomplish that. The complexity we have to handle to use APIs is already minimal.
What makes hypermedia interesting IMHO is (minor point) easier intra-linking within a webservice, and (major point) the ability within a service to point to resources from another one.
This will enable the distributed web we are all waiting for.