check_domain_availability

Check whether any domain can be registered: returns status (available / taken / unknown) plus the register and renewal price for its TLD. To actually register an available domain use register_domain (or an order via create_order with the TLD plan from list_products). This checks public registry availability only: a domain the customer already owns or hosts answers taken here, so never use it to decide whether the customer can build on, point or edit one of their own domains — use resolve or list_domains for that.