curl -X POST https://api.stablegenius.co/v1/payment-intents \
  -H "Authorization: Bearer sk_test_abc123" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": 4.50,
    "currency": "usd",
    "merchant_id": "mer_abc123",
    "metadata": {
      "order_id": "order_456",
      "terminal_id": "pos_01"
    }
  }'

const response = await fetch('https://api.stablegenius.co/v1/payment-intents', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer sk_test_abc123',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    amount: 4.50,
    currency: 'usd',
    merchant_id: 'mer_abc123',
    metadata: {
      order_id: 'order_456',
      terminal_id: 'pos_01',
    },
  }),
});

const paymentIntent = await response.json();

import requests

response = requests.post(
    'https://api.stablegenius.co/v1/payment-intents',
    headers={
        'Authorization': 'Bearer sk_test_abc123',
        'Content-Type': 'application/json',
    },
    json={
        'amount': 4.50,
        'currency': 'usd',
        'merchant_id': 'mer_abc123',
        'metadata': {
            'order_id': 'order_456',
            'terminal_id': 'pos_01',
        },
    },
)

payment_intent = response.json()

{
  "id": "pi_xyz789",
  "object": "payment_intent",
  "status": "awaiting_payment",
  "amount": 4.50,
  "currency": "usd",
  "merchant_id": "mer_abc123",
  "payment_address": "0x1a2b3c4d5e6f7890abcdef1234567890abcdef12",
  "chain": "base",
  "token": "USDC",
  "qr_payload": "ethereum:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913@8453/transfer?address=0x1a2b3c4d5e6f7890abcdef1234567890abcdef12&uint256=4500000",
  "qr_image_url": "https://api.stablegenius.co/v1/qr/pi_xyz789.png",
  "expires_at": "2026-04-01T20:05:00Z",
  "metadata": {
    "order_id": "order_456",
    "terminal_id": "pos_01"
  },
  "created_at": "2026-04-01T20:00:00Z"
}

{
  "error": {
    "type": "invalid_request_error",
    "message": "Amount must be between 0.01 and 10000",
    "param": "amount",
    "code": "amount_out_of_range"
  }
}