Provider's LiveApp

As explained in the Card Integration page, you need to modify your LiveApp with some specific adjustments compared to the one found in the Discover section.

Your LiveApp must:

• Use the Ledger's exchangeSDK (opens in a new tab), in addition to the Wallet API.
• Have a modified, slightly more complex, Manifest file.
• Follow specific flow/ux requirements.

Ledger's exchange SDK

To learn how to create (or embed if already existing) your user interface for the card, please follow the Discover documentation.

Your LiveApp will interact with Ledger Live, through the ExchangeSDK (opens in a new tab), with the corresponding method.

You will need to set up the SDK with your providerId attributed upon request by Ledger.

CARD method

This method will need you to provide the following parameters:

• quoteId: The id coming from your system.
• fromAccountId: User's Ledger account id.
• fromAmount: Amount that will be sold.
• toFiat: Fiat currency that the user wants to be paid with using provider id.
• rate: The rate of the fund.

  exchangeSDK.sell({
  quoteId: "123abc",
  fromAccountId: "97f06be9-6fb2-5da3-be71-4e762ed6e115",// Ledger Live uuid4 account (can be a BTC account)
  fromAmount: new BigNumber(1),
  toFiat: "EUR", // provider fiat id
  rate: 90000, // crypto/fiat rate [BTC/EUR]
  });

Manifest Permission

Your LiveApp manifest should contains at least those permissions request:

"permissions": [
  "account.list",
  "currency.list",
  "custom.exchange.start", 
  "custom.exchange.complete",
]