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Unreal Engine has an http interface that can be used similarly to UnityWebRequest in created a standardized API interface between Unreal and FIO https://docs.unrealengine.com/4.27/en-US/API/Runtime/HTTP/ https://docs.unrealengine.com/4.27/en-US/API/Runtime/HTTP/ .
Game7 github Release of Web3 Unreal SDK:
https://github.com/G7DAO/web3.unreal