The Crypto Flows

There are 4 main crypto flows that Meld supports, and this section will explain each of them in detail.

1. Buy Flow: Also known as onramping, this is when a user purchases crypto and sends it to a wallet address of their choice, in a single transaction.
2. Sell Flow: Also known as offramping, this is when a user sells crypto and gets paid for it via a payment method of their choice.
3. Transfer Flow: This is when a user transfers crypto from a wallet they have on an exchange to another wallet address (custodial or non custodial) of their choice.
4. NFT Checkout: This is when a user purchases an NFT.

Note that all flows 4 essentially use the same endpoints. They all use the widget endpoint, the get transaction endpoint, and the buy and sell flow additionally use the quote endpoint. Since they all use the same endpoints, the transaction type is determined by the params passed in.