Thanks, @yzeng, for your reply and for sharing your use case. It is a very interesting one. I guess those assets would be offline assets, not reachable by the scanner, right? Unfortunately, I can't share any concrete dates for the asset creation through API, but requests like yours can help us raise the priority.
On the other hand, we are also working on a new feature to facilitate the integrations and automations within Lansweeper. It could maybe help you with your development; I would be happy to share more details with you during a short call if you are available. If you contact me (vicente.soriano@lansweeper.com), I will schedule a call to share our plans.