Skip to content

NodeJS SDK for Whalestack. Programmatically accept and settle payments in digital currencies.


Notifications You must be signed in to change notification settings


Folders and files

Last commit message
Last commit date

Latest commit



47 Commits

Repository files navigation

Whalestack Payments API SDK (NodeJS)

Official Whalestack Payments API SDK for NodeJS by

Accepting cryptocurrency payments using the Whalestack API is fast, secure, and easy. After you've signed up and obtained your API key, all you need to do is create a checkout or blockchain deposit address on Bitcoin, Lightning, Litecoin, Stellar, or other supported networks to get paid. You can also use the API for fiat on- and off-ramping via SWIFT or SEPA.

This SDK implements the REST API documented at

For SDKs in different programming languages, see


  • NodeJS >= 10.14.0
  • axios >= 0.21.1

Installation with npm

npm install whalestack-sdk

Usage Client

const WsClient = require('whalestack-sdk');

const client = new WsClient(

Get your API key and secret here:


Wallets and Deposits

Your Whalestack account comes equipped with dedicated deposit addresses for Bitcoin, Lightning, Litecoin, Stellar, SWIFT, SEPA, and other supported networks. You can receive blockchain payments within seconds after registering. The GET /wallets and GET /deposit-address endpoints return your blockchain addresses to start receiving custom deposits.

List Wallets and Deposit Addresses (

let response = await client.get('/wallets');


Whalestack checkouts provide fast and convenient ways for your customers to complete payment. We built a great user experience with hosted checkouts that can be fully branded. If you're not into payment pages, you can take full control over the entire checkout process using our backend checkout APIs. Click here to learn more about building checkouts.

Create a Hosted Checkout (Payment Link) (

let response = await'/checkout/hosted', {
        billingCurrency: 'EUR', // specifies the billing currency
        lineItems: [{ // a list of line items included in this charge
            description: 'PCI Graphics Card',
            netAmount: 169.99,
            quantity: 1
        shippingCostItems: [], // an optional list of shipping and handling costs
        taxItems: []
    settlementAsset: 'USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN' // your settlement asset as given by GET /assets (or ORIGIN to omit conversion)

Swaps And Transfers

Once funds arrive in your account, either via completed checkouts or custom deposits, you have instant access to them and the ability to swap them into other assets or transfer them to your bank account or other blockchain accounts (we recommend to always forward funds into self-custody on cold storage). The POST /swap and POST /transfer endpoints will get you started on swaps and transfers.

Swap Bitcoin to USDC (

let response = await'/swap', {
    targetAmount: 100

Transfer USDC to your SEPA Bank (

let response = await'/transfer', {
    network: 'SEPA',
    amount: 100,
    targetAccount: 'A unique SEPA account label as previously specified in POST /target-account'

Supported Assets, Currencies, and Networks

List all available Networks (

let response = await client.get('/networks');

List all available Assets (

let response = await client.get('/assets');

List all available Billing Currencies (

let response = await client.get('/currencies');

Financial Reports and Accounting

We don't leave you hanging with an obscure and complicated blockchain payment trail to figure out by yourself. All transactions on Whalestack are aggregated into the Financial Reports section of your account and can even be associated with counter-parties, such as customers and beneficiaries. We provide CSV reports, charts, and beautiful analytics for all your in-house accounting needs.

Please inspect for detailed API documentation or email us at service [at]

Support and Feedback

Your feedback is appreciated! If you have specific problems or bugs with this SDK, please file an issue on Github. For general feedback and support requests, email service [at]


  1. Fork it ( )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request