curl -X POST https://api.saturn-pay.com/v1/wallet/fund-card \
  -H "Authorization: Bearer sk_agt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "amountUsdCents": 1000
  }'

const response = await fetch('https://api.saturn-pay.com/v1/wallet/fund-card', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer sk_agt_...',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ amountUsdCents: 1000 })  // $10.00
});

const { checkoutUrl } = await response.json();
// Redirect user to checkoutUrl
window.location.href = checkoutUrl;

import requests

response = requests.post(
    'https://api.saturn-pay.com/v1/wallet/fund-card',
    headers={'Authorization': 'Bearer sk_agt_...'},
    json={'amountUsdCents': 2500}  # $25.00
)

data = response.json()
print('Complete payment at:', data['checkoutUrl'])

{
  "checkoutUrl": "https://checkout.stripe.com/c/pay/cs_live_...",
  "sessionId": "cs_live_abc123",
  "amountUsdCents": 1000,
  "expiresAt": "2024-01-20T16:00:00Z"
}

{
  "error": {
    "code": "INVALID_AMOUNT",
    "message": "Minimum amount is $10.00 (1000 cents)"
  }
}