[okal]

I'm generally quite against shared libs across services for this very reason. Share patterns, sure. But code? You end up coupling services in ugly ways, because Team X has to think about how Team Y will be impacted if they need to make a change to the shared library. API clients (whatever protocol they may be using to communicate), aren't generally the hardest part of building a service. Trying to build shared ones (in my experience) is more trouble than it's worth.