curl --request GET \
  --url {protocol}://{host}/wp-json/cocart/preview/checkout/payment-methods

{
  "stripe": {
    "id": "stripe",
    "title": "Credit Card (Stripe)",
    "description": "Pay securely with your credit card",
    "supports": [
      "products",
      "refunds",
      "subscriptions"
    ],
    "has_fields": true,
    "order_button_text": "Pay Now",
    "method_title": "Stripe",
    "method_description": "Accept credit card payments via Stripe",
    "config": {
      "test_mode": true,
      "is_connected": true,
      "supports_tokenization": true,
      "supports_refunds": true,
      "supports_subscriptions": true,
      "requires_billing_address": true
    }
  },
  "paypal": {
    "id": "paypal",
    "title": "PayPal",
    "description": "Pay via PayPal",
    "supports": [
      "products",
      "refunds"
    ],
    "has_fields": false,
    "order_button_text": "Proceed to PayPal",
    "method_title": "PayPal",
    "method_description": "Accept payments via PayPal",
    "config": {
      "test_mode": false,
      "is_connected": true,
      "supports_tokenization": false,
      "supports_refunds": true,
      "supports_subscriptions": false,
      "requires_billing_address": false
    }
  }
}