const options = {
  method: 'GET',
  headers: {'X-Spree-Seller-Id': '<x-spree-seller-id>', Authorization: 'Bearer <token>'}
};

fetch('http://{defaultHost}/api/v3/seller/delivery_methods', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

curl --request GET \
  --url http://{defaultHost}/api/v3/seller/delivery_methods \
  --header 'Authorization: Bearer <token>' \
  --header 'X-Spree-Seller-Id: <x-spree-seller-id>'

{
  "data": [
    {
      "id": "dm_UkLWZg9DAJ",
      "name": "My courier",
      "code": "UPS_GROUND_73",
      "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_UkLWZg9DAJ",
      "delivery_zone_id": null,
      "calculator_type": "flat_rate",
      "calculator_preferences": {
        "amounts": {},
        "amount": "10.0",
        "currency": "USD"
      }
    },
    {
      "id": "dm_gbHJdmfrXB",
      "name": "Marketplace post",
      "code": "UPS_GROUND_74",
      "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": false,
      "delivery_profile_id": "fp_UkLWZg9DAJ",
      "delivery_zone_id": null,
      "calculator_type": "flat_rate",
      "calculator_preferences": {
        "amounts": {},
        "amount": "10.0",
        "currency": "USD"
      }
    }
  ],
  "meta": {
    "page": 1,
    "limit": 25,
    "count": 2,
    "pages": 1,
    "from": 1,
    "to": 2,
    "in": 2,
    "previous": null,
    "next": null
  }
}