v1

latestOpenAPI 3.1.02026-07-226250251.5 KB

Transactions

Create Quote

Returns fee and receivable amount estimations for a crypto withdrawal from a Fin.com internal wallet to a customer's external crypto wallet.

post/v2/transactions/quote

Request body

type'CRYPTO_WITHDRAWAL' required

Transaction type for the quote.

beneficiary_idstring uuid required

ID of the destination beneficiary.

amountnumber required

Amount to send in the source currency.

Example request

{
  "type": "CRYPTO_WITHDRAWAL",
  "beneficiary_id": "6af8d598-36a5-477d-9320-d7c5ba309107",
  "amount": 5,
  "source": {
    "crypto_wallet_id": "c92dfe1d-220e-4446-a5e4-cd7d46031ba5"
  }
}

Response

Quote generated successfully

Example response

{
  "data": {
    "quote_id": "9ba7d6db-ac78-4a41-acae-f787ee6b1f24",
    "expire_at": "2026-04-29T10:09:33.524075766Z",
    "amount": 5,
    "destination_details": {
      "address": "0xD2Ba7d0DaBd36498df5906fC7B054Fa9EfA9843E",
      "currency": "USDC",
      "rail": "POLYGON"
    },
    "quote_estimation": {
      "developer_fee_fixed": 0.01,
      "developer_fee_percentage": 0.0005,
      "network_fee": 0.004149,
      "total_fee": 0.014649,
      "receivable_amount": 4.98535
    }
  }
}