Payments

Overview

Top up your account with credits using cryptocurrency. We accept Bitcoin, Ethereum, USDT, and many other cryptocurrencies through OxaPay.

Exchange Rate

$1 USD = 300 Credits

Supported Cryptocurrencies

Bitcoin (BTC)
Ethereum (ETH)
USDT (TRC20/ERC20)
Litecoin (LTC)
And many more...

Create a Payment

Endpoint

POST /v1/payments/create

Request

Parameter	Type	Required	Description
`amount`	number	✅	Amount in USD ($1 - $10,000)

Example

curl -X POST https://api.ender.black/v1/payments/create \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"amount": 10}'

Response

{
  "success": true,
  "data": {
    "trackId": "oxapay-track-id",
    "paymentUrl": "https://pay.oxapay.com/...",
    "amount": 10,
    "credits": 3000,
    "expiresAt": "2026-01-01T01:00:00.000Z"
  }
}

Check Payment Status

Endpoint

GET /v1/payments/status/:trackId

Response

{
  "success": true,
  "data": {
    "trackId": "oxapay-track-id",
    "orderId": "ENDER-123456-ABCD",
    "amount": 10,
    "credits": 3000,
    "status": "PAID",
    "txStatus": "confirmed",
    "txConfirmations": 6,
    "paidAmount": 0.00045,
    "paidCurrency": "BTC",
    "paidAt": "2026-01-01T00:30:00.000Z",
    "expiresAt": "2026-01-01T01:00:00.000Z",
    "createdAt": "2026-01-01T00:00:00.000Z"
  }
}

Payment Statuses

Status	Description
`PENDING`	Awaiting payment
`CONFIRMING`	Payment received, awaiting confirmations
`PAID`	Payment successful, credits added
`EXPIRED`	Invoice timed out
`FAILED`	Payment failed

Payment Flow

Create Invoice — Call /v1/payments/create with amount
Redirect User — Open the paymentUrl for user to pay
Poll Status — Check /v1/payments/status/:trackId periodically
Credits Added — Once PAID, credits are automatically added

Invoice Expiration

Invoices expire after 60 minutes. If payment isn't completed in time, create a new invoice.

Purchase a Plan

You can also purchase a subscription plan via crypto payment:

POST /v1/payments/plan

{
  "plan": "PREMIUM"
}

Payments

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