@spritz-finance/api-client
v0.3.2
Published
Typescript library for interacting with the Spritz Finance API
Downloads
174
Readme
@spritz-finance/api-client
A Typescript library for interacting with the Spritz Finance API
Installation
Using npm
npm install --save @spritz-finance/api-clientUsing yarn
yarn add @spritz-finance/api-clientTable of contents
- Interacting with the Spritz API
- Usage
- Creating a user
- Reauthorizing a user
- Basic User Data
- User Verification
- Basic payment flow
- Accounts
- Renaming accounts
- Deleting accounts
- Bill Institutions
- Payment Requests
- Payments
- Onramp Payments
- Webhooks
Interacting with the Spritz API
Purpose: As an integrator, this guide will assist you in creating users and performing user-specific operations on the Spritz platform using the provided API key.
Creating a user
When you create a user using your integration key:
- You will receive an
API keyspecific to that user. - This enables you to interact with the Spritz platform on the user's behalf.
Capabilities of the API Key:
Using the user-specific API key, you can:
- Identity Verification: Guide a user through the identity verification process.
- Account Addition:
- Add Bills for the user.
- Register Bank accounts.
- Issue Virtual cards.
- Payment Requests: Initiate payment requests to the aforementioned accounts.
- Blockchain Transactions: Issue blockchain-based transactions to fulfill the payment requests.
- Payment Status: Query the status of payments directed to the user's accounts.
Usage
Your integration key is provided by Spritz and must always be provided. The api key is specific to each user, and is returned once the user is created. Leave the api key blank if you haven't created the user yet.
import { SpritzApiClient, Environment } from '@spritz-finance/api-client'
const client = SpritzApiClient.initialize({
environment: Environment.Staging,
apiKey: 'YOUR_USER_API_KEY_HERE',
integrationKey: 'YOUR_INTEGRATION_KEY_HERE',
})Creating a user
To create a new Spritz user, all you need is the user's email address. Note that trying to create a user with an email that already exists in the Spritz platform will throw an error.
const user = await client.user.create({
email: '[email protected]',
})
// Response
user = {
email: "[email protected]"
userId: "62d17d3b377dab6c1342136e",
apiKey: "ak_ZTBGDcjfdTg3NmYtZDJlZC00ZjYyLThlMDMtZmYwNDJiZDRlMWZm"
}Setting the User API Key
After creating a user, you can easily set the user's API key onto your initialized client using the provided method:
client.setApiKey(user.apiKey)Now you're ready to issue requests on behalf of the user.
Reauthorizing a user
There is a scenrio where you may need to get access to a users API key again. This can happen if you are trying to sign in a user that already has a Spritz account, or if you have lost access to their API key. In this case, you can reauthorize the user by providing their email. The process is that we will send the user an OTP code to their email, and then the user must pass that code on to you to confirm that they are allowing you to interact with their account on their behalf.
const { success } = await client.user.requestApiKey('[email protected]')
const { apiKey, userId, email } = await client.user.authorizeApiKeyWithOTP({
email: '[email protected]',
otp: '123456',
})Basic User Data
Use this to fetch the user's basic data
const userData = await client.user.getCurrentUser()User Verification
Purpose: To ensure users are properly identified before interacting with the Spritz platform.
Overview
All users must undergo basic identity verification before they can engage with the Spritz platform's features.
Process
User Creation: Upon the creation of a new user, their default verification status will be set to
INITIALIZED.Checking Verification Status: Use the
getUserVerificationmethod to retrieve the current verification status of a user.Verification Transition: Once a user completes the identity verification process, their status will change from
INITIALIZEDtoACTIVE. Only then can the user fully interact with the platform.Getting Verification URL: When you request a user's verification status, the response will provide a
verificationUrl. This URL is essential for the user to proceed with their identity verification.
How to Present Verification Flow to the User
Here are some options on how you can present the verificationUrl to the user:
- Browser: Open the URL in a new browser tab.
- In-App: Embed the URL in an iframe within your application.
- Mobile: If your platform is mobile-based, open the URL in a native mobile web view.
- Email: Send users an email containing the link, prompting them to complete the identity verification.
const verificationData = await client.user.getUserVerification()Basic payment flow
Execute a payment in a few simple steps:
- Select an Account: Choose the account you wish to pay to.
- Initiate Payment Request: Use the account's ID, your desired payment amount, and the chosen blockchain network to create a payment request.
- Retrieve Transaction Data: Use the
getWeb3PaymentParamsmethod to obtain the necessary transaction data for fulfilling the payment request. - Blockchain Transaction: Issue the required blockchain transaction from the user's wallet.
- Payment Confirmation: After blockchain transaction confirmation, check the status of the TradFi payment.
Note on Issuing the Blockchain Transaction
For Spritz to process a TradFi payment to an account, we need to receive a blockchain transaction on our smart contract, which provides us the crypto funds. As an integrator, it's essential to manage how the blockchain transaction is initiated from the user's wallet to Spritz.
- Wallet Apps: If your application functions as a wallet, prompt the user to sign a transaction using data from
getWeb3PaymentParams. - Web-based Dapps: Use your existing connection to the user's wallet to prompt a transaction.
If your application doesn't have a connection to the user's wallet, consider implementing one. Some popular options include:
Example
// Fetch all bank accounts for the user
const bankAccounts = await client.bankAccount.list()
// Choose a bank account to use for the payment request
const account = bankAccounts[0]
// Create a payment request for the selected bank account
const paymentRequest = await client.paymentRequest.create({
amount: 100,
accountId: account.id,
network: PaymentNetwork.Ethereum,
})
// Retrieve the transaction data required to issue a blockchain transaction
const transactionData = await client.paymentRequest.getWeb3PaymentParams({
paymentRequest,
paymentTokenAddress: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48', // USDC on mainnet
})
/**
* Issue blockchain transaction with the transaction data
* and wait for confirmation
**/
// Retrieve the payment issued for the payment request to check the payment status and confirmation
const payment = await client.payment.getForPaymentRequest(paymentRequest.id)Accounts
Spritz emphasizes its capabilities in account handling and payment processing.
Account Types
Spritz supports three distinct types of accounts:
- Bank Account
- Bill
- Virtual Card
Though each account type possesses its unique creation process and specific properties, it's important to understand that all of them are uniformly termed as an "account" within the Spritz platform.
Commonalities & Differences
- Common Properties: Every type of account shares certain properties consistent across the platform.
- Unique Properties: Each account type also has attributes specific to its nature and functionality.
Recognizing these nuances is crucial for optimal interaction with the Spritz platform's account-related features.
Bank Accounts
Spritz offers a dedicated interface to manage bank accounts, allowing seamless listing and addition of bank account details for users.
List user bank accounts
To retrieve all bank accounts linked to a user:
const bankAccounts = await client.bankAccount.list()The bankAccount.list() method returns an array of user-linked bank accounts, complete with essential details to display in a UI and facilitate payments:
const bankAccounts = [{
id: "62d17d3b377dab6c1342136e",
name: "Precious Savings",
type: "BankAccount",
bankAccountType: "USBankAccount",
bankAccountSubType: "Checking",
userId: "62d17d3b377dab6c1342136e",
accountNumber: "1234567",
bankAccountDetails: {
routingNumber: "00000123",
}
country: "US",
currency: "USD",
email: "[email protected]",
holder: "Bilbo Baggins",
institution: {
id: "62d27d4b277dab3c1342126e",
name: "Shire Bank",
logo: "https://tinyurl.com/shire-bank-logo",
},
ownedByUser: true,
createdAt: "2023-05-03T11:25:02.401Z",
deliveryMethods: ['STANDARD', 'INSTANT']
}]Add US bank account
Currently, Spritz supports the addition of US bank accounts:
The input structure for adding a US bank account is defined as:
// Input arguments for creating a US bank account
export interface USBankAccountInput {
accountNumber: string
email: string
holder: string
name: string
ownedByUser?: boolean | null
routingNumber: string
subType: BankAccountSubType
}import { BankAccountType, BankAccountSubType } from '@spritz-finance/api-client'
const bankAccounts = await client.bankAccount.create(BankAccountType.USBankAccount, {
accountNumber: '123456789',
routingNumber: '987654321',
holder: 'Bilbo Baggins',
name: 'Precious Savings',
ownedByUser: true,
subType: BankAccountSubType.Savings,
})Add Canadian bank account
Currently, Spritz supports the addition of Canadian bank accounts:
The input structure for adding a Canadian bank account is defined as:
// Input arguments for creating a Canadian bank account
export interface CABankAccountInput {
accountNumber: string
email?: string
holder: string
name: string
ownedByUser?: boolean | null
transitNumber: string
institutionNumber: string
subType: BankAccountSubType
}import { BankAccountType, BankAccountSubType } from '@spritz-finance/api-client'
const bankAccounts = await client.bankAccount.create(BankAccountType.CABankAccount, {
accountNumber: '123456789',
transitNumber: '12345',
institutionNumber: '123',
holder: 'Bilbo Baggins',
name: 'Precious Savings',
ownedByUser: true,
subType: BankAccountSubType.Savings,
})Bills
Spritz provides robust support for bills, allowing seamless management and interaction with user billing accounts. Below is a guide to the methods and functionalities specifically designed for handling bills within Spritz.
List user bills
To retrieve all bill accounts associated with a user:
const bills = await client.bill.list()The bill.list() method returns an array of user-associated bills, complete with essential details for display in a UI and for processing payments:
const bills = [
{
id: '62d17d3b377dab6c1342136e',
name: 'Precious Credit Card',
type: 'Bill',
billType: 'CreditCard',
userId: '62d17d3b377dab6c1342136e',
mask: '4567',
originator: 'User',
payable: true,
verifying: false,
billAccountDetails: {
balance: 240.23,
amountDue: 28.34,
openedAt: '2023-05-03T11:25:02.401Z',
lastPaymentAmount: null,
lastPaymentDate: null,
nextPaymentDueDate: '2023-06-03T11:25:02.401Z',
nextPaymentMinimumAmount: 28.34,
lastStatementBalance: 180.23,
remainingStatementBalance: null,
},
country: 'US',
currency: 'USD',
dataSync: {
lastSync: '2023-05-03T11:25:02.401Z',
syncStatus: 'Active',
},
institution: {
id: '62d27d4b277dab3c1342126e',
name: 'Shire Bank Credit Card',
logo: 'https://tinyurl.com/shire-bank-logo',
},
createdAt: '2023-05-03T11:25:02.401Z',
deliveryMethods: ['STANDARD'],
},
]Add US bill account
Currently, Spritz allows the addition of US bill accounts only. The process involves identifying the institution managing the bill and inputting the bill's account number. Here's a guide on how to add a bill for a user:
import { BillType } from '@spritz-finance/api-client'
const institutions = await client.institution.popularUSBillInstitutions(BillType.CreditCard)
const billInstitution = institutions[0]
const accountNumber = '12345678913213'
const bill = await client.bill.create(billInstitution.id, accountNumber, BillType.CreditCard)Virtual Card
Spritz offers the ability to create virtual cards that users can fund using cryptocurrency. These virtual cards represent an alternative payment account offered by Spritz. To effectively interact with the Virtual Card feature, use the API endpoints detailed below.
Fetch a users virtual card
The fetch endpoint returns an object containing details associated with the virtual card. Importantly, this object excludes sensitive card information such as the card number and the CVV.
const virtualCard = await client.virtualCard.fetch()const virtualCard = {
id: '62d17d3b377dab6c1342136e',
type: 'VirtualCard',
virtualCardType: 'USVirtualDebitCard',
userId: '62d17d3b377dab6c1342136e',
mask: '0001',
country: 'US',
currency: 'USD',
balance: 0,
renderSecret: 'U2FsdGVkX18bLYGYLILf4AeW5fOl8VYxAvKWVDtbZI5DO7swFqkJ2o',
billingInfo: {
holder: 'Bilbo Baggins',
phone: '+123456789',
email: '[email protected]',
address: {
street: '1 Bagshot Row',
street2: '',
city: 'Hobbiton',
subdivision: 'The Shire',
postalCode: '12345',
countryCode: 'ME',
},
},
}Create a US virtual debit card
import { VirtualCardType } from '@spritz-finance/api-client'
const virtualCard = await client.virtualCard.create(VirtualCardType.USVirtualDebitCard)Displaying sensitive card details
To show the sensitive card details that users require for payment transactions, you must integrate our dedicated drop-in widget. This widget securely renders card details. Use the renderSecret, obtained from the standard fetch card endpoint, in conjunction with the user's API key.
We currently support and maintain the following packages for the card rendering process:
Renaming accounts
Rename a bank account
You can conveniently change the display name of a bank account using the following endpoint. The first argument specifies the ID of the bank account, while the second argument represents the desired new name for the account.
const updateAccount = await client.bankAccount.rename('62d17d3b377dab6c1342136e', 'My new account')Rename a bill
You can conveniently change the display name of a bill using the following endpoint. The first argument specifies the ID of the bill, while the second argument represents the desired new name for the account.
const updateAccount = await client.bill.rename('62d17d3b377dab6c1342136e', 'My first credit card')Deleting accounts
Delete a bank account
To remove a bank account from a user's account, you can use the following endpoint. You only need to specify the ID of the bank account that you want to delete as an argument.
await client.bankAccount.delete('62d17d3b377dab6c1342136e')Delete a bill
To remove a bill from a user's account, you can use the following endpoint. You only need to specify the ID of the bill that you want to delete as an argument.
await client.bill.delete('62d17d3b377dab6c1342136e')Bill Institutions
When adding a new bill for a user, we need to provide a reference to the institution who holds the account for the user. As an example, if a user wanted to add their Chase Visa Credit Card to their Spritz account, the Institution of the account would be Chase Credit Cards and then the account number provided would be the 16-digit card number for their credit card.
Spritz exposes several endpoints to help users find the Institutions of their bill accounts.
Fetching popular bill institutions
const popularInstitutions = await client.institution.popularUSBillInstitutions()
// Optionally filter by a specific bill type
const popularInstitutions = await client.institution.popularUSBillInstitutions(BillType.Mortgage)Searching for bill institutions by name
const institutions = await client.institution.searchUSBillInstitutions('american express')
// Optionally filter by a specific bill type
const institutions = await client.institution.searchUSBillInstitutions(
'american express',
BillType.CreditCard
)Payment Requests
A payment request refers to the intent to initiate a payment to a specific account. Once a payment request is created, a blockchain transaction is required to fulfill it. After the blockchain transaction settles, the payment request is completed, and a fiat payment is issued to the designated account.
Create a payment request
To initiate a payment request for a specific account, you can use the following functionality. The required inputs for creating a payment request include the ID of the account to be paid, the amount of the fiat payment in USD, and the network on which the blockchain transaction will settle.
import {PaymentNetwork} from '@spritz-finance/api-client';
const paymentRequest = await client.paymentRequest.create({
amount: 100,
accountId: account.id,
network: PaymentNetwork.Ethereum,
deliveryMethod: 'INSTANT'
});
// Example response
{
id: '645399c8c1ac408007b12273',
userId: '63d12d3B577fab6c6382136e',
accountId: '6322445f10d3f4d19c4d72fe',
status: 'CREATED',
amount: 100,
feeAmount: 0,
amountDue: 100,
network: 'ethereum',
createdAt: '2023-05-04T11:40:56.488Z'
}Fulfil a payment request (EVM transactions)
After creating a payment request, you must issue a blockchain transaction to settle the payment request. For EVM compatible networks, this involves interacting with the SpritzPay smart contract (see: SpritzPay deployments).
To obtain the data needed for the transaction, you can use the following endpoint.
import {PaymentNetwork} from '@spritz-finance/api-client';
const paymentRequest = await client.paymentRequest.create({
amount: 100,
accountId: account.id,
network: PaymentNetwork.Ethereum,
});
const transactionData = await client.paymentRequest.getWeb3PaymentParams({
paymentRequest,
paymentTokenAddress: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48', // USDC on mainnet
})
// Example response
{
contractAddress: '0xbF7Abc15f00a8C2d6b13A952c58d12b7c194A8D0',
method: 'payWithToken',
calldata: '0xd71d9632000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb480000000000000000000000000000000000000000000000000000000005f5e100000000000000000000000000000000000000000064539a31c1ac408007b12277',
value: null,
requiredTokenInput: '100000000',
suggestedGasLimit: '110000'
}The contract address (to), calldata (data), and value are the primary components used to execute the blockchain transaction. You can use the requiredTokenInput to verify that the user's wallet has sufficient funds to complete the payment before initiating the transaction.
Transaction fees
Transaction fees are applied once the monthly transaction volume exceeds $100. To determine the fee amount for a specific payment value, you can use the following endpoint.
const fees = await client.paymentRequest.transactionPrice(101)
// Example response
0.01Payments
Payments represent a fiat payment that has been issued to the account. Once the status of the Payment Request has moved to Confirmed then the Payment will be created.
Retrieve the payment for a payment request
import {PaymentNetwork} from '@spritz-finance/api-client';
const paymentRequest = await client.paymentRequest.create({
amount: 100,
accountId: account.id,
network: PaymentNetwork.Ethereum,
});
const payment = await client.payment.getForPaymentRequest(paymentRequest.id);
// Example response
{
id: '6368e3a3ec516e9572bbd23b',
userId: '63d12d3B577fab6c6382136e',
status: 'PENDING',
accountId: '6322445f10d3f4d19c4d72fe',
amount: 100,
feeAmount: null,
createdAt: '2022-11-07T10:53:23.998Z'
}
Retrieve all payments for an account
const payments = await client.payment.listForAccount(account.id)
// Example response
[
{
id: '6368e3a3ec516e9572bbd23b',
userId: '63d12d3B577fab6c6382136e',
status: 'PENDING',
accountId: '6322445f10d3f4d19c4d72fe',
amount: 100,
feeAmount: null,
createdAt: '2022-11-07T10:53:23.998Z',
},
]Onramp Payments
Onramp Payments are orders to buy crypto stablecoins with a bank transfer. Upon creating an onramp payment, you will receive deposit instructions to fulfill that order. When the bank transfer has been received and disbursed, the status of that onramp payment will change.
Create onramp payment
const onrampPayment = await client.onrampPayment.create({
token: 'USDC' // Supported: currently only 'USDC'
network: 'ethereum' // supported: 'ethereum', 'polygon', 'avalanche'
amount: 100, // How much token to purchase (100 USDC)
address: '0xbB76483e33e01315438D8F6CF1Aee9C9b85f433b', // Wallet address to disburse tokens to
paymentMethod: 'ACH' // 'WIRE' or 'ACH'
});
// Example response
{
"id": "653fab35ad263e5ae8b0e605",
"amount": 100,
"feeAmount": 1.5,
"depositInstructions": {
"amount": 101.5,
"currency": "USD",
"bankName": "Bank of Nowhere",
"bankAddress": "1800 North Pole St., Orlando, FL 32801",
"bankBeneficiaryName": "Bridge Ventures Inc",
"bankRoutingNumber": "123456789",
"bankAccountNumber": "11223344556677",
"paymentMethod": "WIRE",
"depositMessage": "BVI72D90851F051F4189",
},
"network": "ethereum",
"token": "USDC",
"address": "0xbb76483e33e01315438d8f6cf1aee9c9b85f433b",
"status": "AWAITING_FUNDS",
"createdAt": "2023-10-30T13:10:13.521Z",
}
Retrieve all onramp payments for an account
const payments = await client.onrampPayment.list()[
// Example response
{
id: '653fab35ad263e5ae8b0e605',
amount: 100,
feeAmount: 1.5,
depositInstructions: {
amount: 101.5,
currency: 'USD',
bankName: 'Bank of Nowhere',
bankAddress: '1800 North Pole St., Orlando, FL 32801',
bankBeneficiaryName: 'Bridge Ventures Inc',
bankRoutingNumber: '123456789',
bankAccountNumber: '11223344556677',
paymentMethod: 'WIRE',
depositMessage: 'BVI72D90851F051F4189',
},
network: 'ethereum',
token: 'USDC',
address: '0xbb76483e33e01315438d8f6cf1aee9c9b85f433b',
status: 'AWAITING_FUNDS',
createdAt: '2023-10-30T13:10:13.521Z',
}
]Webhooks
Instead of making a request to get information, webhooks send information to your specified endpoint as soon as an event occurs. Spritz's integration offers a variety of webhook events that can be crucial for maintaining data integrity and responsiveness in applications. Let's dive into how you can best utilize these.
Supported webhook events
Spritz currently supports the following webhook events:
Account Events
account.created: Triggered when a new account is created.account.updated: Triggered when details of an account are updated.account.deleted: Triggered when an account is deleted.
Payment Events
payment.created: Triggered when a new payment is initiated.payment.updated: Triggered when details of a payment are updated.payment.completed: Triggered when a payment is successfully completed.payment.refunded: Triggered when a payment is refunded.
These events allow you to respond to changes in the account and payments for a user.
Setting up webhooks
To set up a webhook with Spritz, you'll need to provide:
- URL: The endpoint URL where Spritz will send the webhook data.
- Events: The specific events you want to listen for.
const webhook = await client.webhook.create({
url: 'https://my.webhook.url/spritz',
events: ['account.created', 'account.updated', 'account.deleted'],
})Upon receiving a webhook, your server will get a payload with the following structure:
{
"userId": "user-id-here",
"id": "resource-id-here",
"eventName": "name-of-the-event-here"
}