Content Card Channel API's support

Hi Team,I am working on the implementation of New Channel Content cards(AEP/AJO).

But for content Cards i have a gone through the documentation and as per the Documentation we have the implementation via SDK's .

In that case client won't be able to share the SDK's ,So i just want to ask that do we have any other solution or via API's we can implement Content cards as i can't see any documentation around the implementation via API's

Kindly do the needful