Celeriz SDK

SDK for integrating with the Celeriz Onramp/Offramp API.

Installation

npm install celeriz

Initialization

// JavaScript
const { CelerizSDK } = require('celeriz');
const sdk = new CelerizSDK({ apiKey: 'YOUR_API_KEY' });

// TypeScript
import { CelerizSDK } from 'celeriz';
const sdk = new CelerizSDK({ apiKey: 'YOUR_API_KEY' });

• apiKey (string, required): Your Celeriz API key (use the sk-... key provided).
• baseUrl (string, optional): Override the default API base URL if needed.

Methods

Onramp

getOnrampQuote(params)

Get a quote for fiat-to-crypto conversion.

Parameters:

• fromCurrency (string): Base currency (e.g., 'INR')
• toCurrency (string): Crypto currency (e.g., 'USDT')
• fromAmount (string): Fiat amount
• chain (string): Network (e.g., 'bep20')
• paymentMethodType (string): Payment method (e.g., 'UPI')

Example:

const quote = await sdk.getOnrampQuote({
  fromCurrency: 'INR',
  toCurrency: 'USDT',
  fromAmount: '1000',
  chain: 'bep20',
  paymentMethodType: 'UPI',
});

createOnrampTransaction(params)

Create an onramp transaction.

Parameters:

• fromCurrency, toCurrency, chain, paymentMethodType, depositAddress, customerId, fromAmount, toAmount, rate (all strings)

Example:

const tx = await sdk.createOnrampTransaction({
  fromCurrency: 'INR',
  toCurrency: 'USDT',
  chain: 'bep20',
  paymentMethodType: 'UPI',
  depositAddress: '0x123...',
  customerId: 'cust_123',
  fromAmount: '1000',
  toAmount: '12.5',
  rate: '80.0',
});

Offramp

getOfframpQuote(params)

Get a quote for crypto-to-fiat conversion.

Parameters:

• chain, fromCurrency, toCurrency, fromAmount (all strings)

Example:

const quote = await sdk.getOfframpQuote({
  chain: 'bep20',
  fromCurrency: 'USDT',
  toCurrency: 'INR',
  fromAmount: '10',
});

createOfframpTransaction(params)

Create an offramp transaction.

Parameters:

• fromCurrency, toCurrency, chain, fiatAccountId, customerId, fromAmount, toAmount, rate (all strings)

Example:

const tx = await sdk.createOfframpTransaction({
  fromCurrency: 'USDT',
  toCurrency: 'INR',
  chain: 'bep20',
  fiatAccountId: 'acc_123',
  customerId: 'cust_123',
  fromAmount: '10',
  toAmount: '800',
  rate: '80.0',
});

KYC

getKycUrl(params)

Get a KYC URL for user verification.

getKycRequirements(params)

Get KYC requirements for a specific country/customer.

submitKycDetails(params)

Submit KYC details for verification.

submitKycFiles(params)

Submit KYC files for verification.

getKycStatus(params)

Get KYC verification status.

All KYC methods accept an object with the required fields as per your API docs.

KYB

getKybRequirements(country)

Get KYB requirements for a country.

Parameters:

• country (string): Country code (e.g., 'IN')

submitKybDetails(params)

Submit KYB details (object as per API docs).

submitKybDocuments(formData)

Submit KYB documents (use a FormData object for file uploads).

Merchant

setMerchantWebhookUrl({ webhookUrl })

Set the webhook URL for your merchant account.

Parameters:

• webhookUrl (string): The webhook URL to set

Example:

await sdk.setMerchantWebhookUrl({ webhookUrl: 'https://yourdomain.com/webhook' });

Error Handling

All methods throw if the API returns an error. Use try/catch to handle errors:

try {
  const quote = await sdk.getOnrampQuote({ ... });
} catch (err) {
  console.error('API error:', err.response?.data || err.message);
}

Troubleshooting

• 401 Unauthorized: Ensure your API key is correct and passed as x-api-key.
• Network errors: Check your internet connection and base URL.
• Parameter errors: Double-check required fields for each method.

Contributing

Pull requests and issues are welcome! Please open an issue for bugs or feature requests.

License

MIT