api to issue user asset and the cost

[ripplexiaoshan]

This feature is not functional yet, but it's in the plan.

[Yokosho]

It is good that we are involved in the question that came up.

[qsmeng]

Hello yoyows:
  I know there should exist apis to issue user asset. But I dont know how to find them. would you please tell me? Thank you. by the way, what's the cost to transfer user asset between two users?