hydra and void

> Hydra is just a vocabulary which allows you to describe your service
interface in a machine-readable manner. Nothing more, nothing less.

^^ Really like the simplicity of this definition.

I recently wrote a very simple API.  It takes a user URI and returns a
single record ( a balance ).

I was looking yesterday for a simple vocab to describe (and discover) this
API.

I asked on #swig about using hydra or void, but there wasnt much of a
resonse.

In void I found:

The following example shows how the Sindice API [SINDICE-API] could be
described as a VoID dataset with a URI lookup endpoint:
:Sindice a void:Dataset ;
    void:uriLookupEndpoint <http://api.sindice.com/v2/search?qt=term&q=> .


Trying to understand.  Are there any comments on whether there's an overlap
between hydra and void here.