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Onramper

Etherspot have partnered with Onramper to provide a seamless fiat onramp experience for both dapp developers and users.

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Onramper Docs

Using the SDK, developers can easily call a function which will open the Onramper widget with all the values the user wishes. These include things such as the address of the smart contract account, the type of fiat they want to onramp from, the amount, and the type of crypto they wish to purchase. With the Etherspot SDK instantiated, you can simply call:
Without any values passed in this will open the default Onramper widget. The Etherspot SDK offers a number of values that can be passed in to make sure the user is directed correctly. All of these are optional.

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Optional Parameters

So now we can tailor the widget specifically to what the dev wants their user to purchase. In this example we want USD to show as the fiat. We only want ETH to show as the crypto to buy. We don’t want to make the amount configurable. We don’t want the amount to be editable. We can put together the function like this:
Which will generate a link like this. https://buy.onramper.com/?networkWallets=ETHEREUM:0x705F9070da822804Ed045E26Bac7C3d2F8a4804C&defaultAmount=10&defaultFiat=USD&onlyCryptos=ETH&isAmountEditable=false The address will be set to the Etherspot smart account generated by the SDK.