Create Sell Order | Transak

import requests
url = "https://api-stg.transak.com/ledger/v1/sell"
payload = {
    "quoteId": "e8720a2a-2b19-4674-a68f-f4fc3d065c64",
    "amount": "68.99",
    "refundAddress": "tb1qrefundaddressexample",
    "fromCryptoCurrency": "bitcoin_testnet",
    "toFiatCurrency": "EUR",
    "payloadCryptoCurrency": "BTC",
    "nonce": "123456"
}
headers = {
    "x-api-key": "<apiKey>",
    "Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.json())

{
  "sellId": "44a353ce-0a3c-4e3e-95f7-2b34e07f63ba",
  "amount": "68.99",
  "payinAddress": "tb1qdm6wxntlp4xh4rydmqy3reweu6l6y25c7p7yx2",
  "createdAt": "2025-04-03T06:59:33.834Z",
  "providerFees": "3",
  "referralFees": "2.26",
  "providerSig": {
    "payload": "ChdhbnNodWwuZ2FyZ0B0cmFuc2FrLmNvbRIPYml0Y29pbl90ZXN0bmV0GgMBhqAiKnRiMXFkbTZ3eG50bHA0eGg0cnlkbXF5M3Jld2V1Nmw2eTI1YzdwN3l4MioDQlRDMgwKCAAAAAAAABrzEAI6IN5GF9rzEZhScN_z-jOZ42j6o3mC7I4QWZW0rx_ApcNV",
    "signature": "Qyfpgt_d4p_wEsbELNRYZ1KHc7TAvEuPfnjzW8JXryPMoVjOZk8NVpHtKJcLXMr5LvFrsKhHUdgJ9qwJpsN65g"
  }
}

Create a sell order for the selected quote.

The API also generates the payload and signature used by the Ledger device to verify transaction data with the corresponding private/public key pair.

Authentication

x-api-keystring

Transak API key available from the Transak Dashboard.

Request

This endpoint expects an object.

quoteIdstringRequired

Quote identifier returned from the quote endpoint.

amountstringRequired

Sell amount in crypto units.

refundAddressstringRequired

Refund wallet address.

fromCryptoCurrencystringRequired

Ledger-formatted crypto currency identifier.

toFiatCurrencystringRequired

Fiat currency code.

payloadCryptoCurrencystringRequired

Asset identifier used in the signed Ledger payload.

noncestringRequired

Nonce used for device-side verification.

Response

Sell order created successfully.

sellIdstringformat: "uuid"

Sell order identifier generated by the wrapper.

amountstring

Confirmed sell amount.

payinAddressstring

Deposit address where the user must send crypto.

createdAtdatetime

Sell order creation timestamp.

providerFeesstring

Provider fee charged for the sell order.

referralFeesstring

Referral fee charged for the sell order.

providerSigobject

Errors

400

Bad Request Error

500

Internal Server Error