import { createSellerClient } from '@spree/seller-sdk'

const client = createSellerClient({
  baseUrl: 'https://your-store.com',
  jwtToken: 'eyJhbGciOi...',
  sellerId: 'sel_UkLWZg9DAJ',
})

const deliveryMethod = await client.deliveryMethods.create({
  name: 'Next day',
  delivery_profile_id: 'fp_UkLWZg9DAJ',
  calculator: { type: 'flat_rate', preferences: { amount: '9.99', currency: 'USD' } },
})

curl --request POST \
  --url http://{defaultHost}/api/v3/seller/delivery_methods \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Spree-Seller-Id: <x-spree-seller-id>' \
  --data '
{
  "name": "<string>",
  "admin_name": "<string>",
  "code": "<string>",
  "delivery_profile_id": "<string>",
  "delivery_zone_id": "<string>",
  "storefront_visible": true,
  "tracking_url": "<string>",
  "estimated_transit_business_days_min": 123,
  "estimated_transit_business_days_max": 123,
  "calculator": {
    "type": "flat_rate",
    "preferences": {
      "amount": "12.5"
    }
  },
  "rules": [
    {
      "type": "<string>",
      "id": "<string>",
      "active": true,
      "preferences": {}
    }
  ]
}
'

{
  "id": "dm_EfhxLZ9ck8",
  "name": "Next day",
  "code": null,
  "estimated_transit_business_days_min": null,
  "estimated_transit_business_days_max": null,
  "digital": false,
  "pickup": false,
  "pickup_point": false,
  "admin_name": null,
  "storefront_visible": true,
  "tracking_url": null,
  "created_at": "2026-01-15T12:00:00.000Z",
  "updated_at": "2026-01-15T12:00:00.000Z",
  "rules": [],
  "editable": true,
  "delivery_profile_id": "fp_gbHJdmfrXB",
  "delivery_zone_id": null,
  "calculator": {
    "type": "flat_rate",
    "preferences": {
      "amounts": {},
      "amount": "9.99",
      "currency": "USD"
    }
  }
}

{
  "error": {
    "code": "validation_error",
    "message": "Name can't be blank",
    "details": {
      "name": [
        "can't be blank"
      ]
    }
  }
}