simple rest interface and it's a very simple API but it's run by miners and it allows you as a very user the user who wants to make a payment or a developer who wants to build an application to ask a miner directly how much fee what is it what exactly is the fee I need and can you send can I send you a transaction yes I can and can you tell me whether you've accepted the transaction or not it seems like such a simple thing that it's it's just not the impossible on on another blockchains and this is one of the first things that