import { createAdminClient } from '@spree/admin-sdk'

const client = createAdminClient({
  baseUrl: 'https://your-store.com',
  secretKey: 'sk_xxx',
})

const orderReturn = await client.orders.returns.refund('or_UkLWZg9DAJ', 'ret_UkLWZg9DAJ', {
  amount: '29.99',
  refund_method: 'original_payment',
})

spree api patch /orders/{order_id}/returns/{id}/refund -d '{"amount":"29.99","refund_method":"original_payment"}'

{
  "id": "ret_UkLWZg9DAJ",
  "number": "RET1001",
  "status": "refunded",
  "order_id": "or_UkLWZg9DAJ",
  "reason_id": null,
  "refund_total": "10.00",
  "refund_tax_total": "0.00",
  "approved_at": "2026-01-14T12:00:00Z",
  "received_at": "2026-01-15T12:00:00Z",
  "refunded_at": "2026-01-15T12:00:00Z",
  "canceled_at": null,
  "external_references": {},
  "memo": "Item did not fit",
  "metadata": {},
  "created_at": "2026-01-15T12:00:00.000Z",
  "updated_at": "2026-01-15T12:00:00.000Z",
  "stock_location_id": "sloc_UkLWZg9DAJ",
  "created_by_id": null,
  "created_by_type": null,
  "refunded_total": "10.00",
  "refundable_total": "0.00",
  "documents": [],
  "labels": [],
  "deliveries": []
}