Claim Human task via API or expose it via WS ...

If I understand your question correctly, it is recommended to always use as much OOTB features as possible. I would advice using WS where possible instead of building custom code using API's. The alternate option is to create a plug-in smart service that uses the API to expose the functionality as required. This is more of a managed way of using API's

If I understand your question correctly, it is recommended to always use as much OOTB features as possible. I would advice using WS where possible instead of building custom code using API's. The alternate option is to create a plug-in smart service that uses the API to expose the functionality as required. This is more of a managed way of using API's