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

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

const deliveryMethod = await client.deliveryMethods.update('dm_UkLWZg9DAJ', {
  name: 'UPS Express',
  estimated_transit_business_days_min: 1,
  estimated_transit_business_days_max: 2,
})

spree api patch /delivery_methods/{id} -d '{"name":"UPS Express","estimated_transit_business_days_min":1,"estimated_transit_business_days_max":2}'

{
  "id": "dm_UkLWZg9DAJ",
  "name": "UPS Express",
  "code": "UPS_GROUND_12",
  "estimated_transit_business_days_min": 1,
  "estimated_transit_business_days_max": 2,
  "digital": false,
  "pickup": false,
  "pickup_point": false,
  "admin_name": null,
  "storefront_visible": true,
  "tracking_url": null,
  "available_to_sellers": false,
  "created_at": "2026-01-15T12:00:00.000Z",
  "updated_at": "2026-01-15T12:00:00.000Z",
  "deleted_at": null,
  "markup_flat": "0.00",
  "markup_percent": "0",
  "seller_id": null,
  "seller_name": null,
  "services": [],
  "rules": [],
  "tax_category_id": null,
  "delivery_profile_id": "fp_UkLWZg9DAJ",
  "delivery_origin_group_id": "og_UkLWZg9DAJ",
  "delivery_zone_id": null,
  "stock_location_ids": [],
  "fulfillment_provider": "manual",
  "pickup_point_provider": null,
  "rate_provider": null,
  "calculator": {
    "type": "flat_rate",
    "preferences": {
      "amounts": {},
      "amount": "10.00",
      "currency": "USD"
    }
  }
}