Private trading is only available for Trigger Modules and Ancestors Modules.
As of the November 19 update, only Trigger Modules can be traded.
Trading for Ancestors Modules will be added in the December 2025 update.
Private trading uses Caliber as the currency, and the trade must be a direct exchange of an item and Caliber.
Item-for-item trades or Caliber-for-Caliber trades are not supported.
If the other player registers an item, please note that the exchange can only be completed with Caliber.