Is creating delivery points with API possible?

I would like to do the following, could you tell me if it is possible.

I would like to add a shipping method and that this shipping method has different delivery points. I know it is possible to create shipping methods through the API, but I don’t know if it is possible to create delivery points through the API, the delivery points belong to a third-party API.

Or in any case, I would like to show a field at checkout to enter a postal code and according to this, the delivery points are displayed by calling a third-party API, and this selected point is reflected in the order.

It is possible to do one of the two things, or something similar, have some information to share. Thanks!