// Persist one key per intended booking if you need safe network-error recovery.
async function bookShipment(url, token, input, idempotencyKey, signal) {
  const headers = { Authorization: 'Bearer ' + token, 'Content-Type': 'application/json' };
  if (idempotencyKey) headers['Idempotency-Key'] = idempotencyKey;
  let response = await fetch(url, { method: 'POST', headers, body: JSON.stringify(input), signal });
  let body = await response.json();
  // Non-2xx can still contain a persisted shipment, e.g. 424 or a booking timeout.
  if (!response.ok) throw Object.assign(new Error(body.message ?? body.data?.error?.message ?? 'Booking failed'), { status: response.status, body });
  if (response.status === 202) {
    const location = response.headers.get('Location');
    if (!location) throw new Error('Missing shipment Location');
    while (['queued', 'booking', 'cancelling'].includes(body.data.state)) {
      await new Promise(resolve => setTimeout(resolve, 1000 * Number(response.headers.get('Retry-After') ?? 5)));
      response = await fetch(location, { headers: { Authorization: 'Bearer ' + token }, signal });
      body = await response.json();
      if (!response.ok) throw Object.assign(new Error(body.message ?? 'Polling failed'), { status: response.status, body });
    }
  }
  if (body.data.state === 'failed') throw Object.assign(new Error(body.data.error.message), { shipment: body.data });
  return body.data;
}

curl --request POST \
  --url https://api.smartsend.io/v2/teams/{teamUuid}/shipments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "identifier": "shop-order-1042",
  "reference": "ORDER-1042",
  "currency": "DKK",
  "weight_unit": "g",
  "dimension_unit": "cm",
  "delivery": {
    "service_code": "postnord_agent",
    "pickup_point": {
      "uuid": "99999999-9999-4999-8999-999999999999"
    }
  },
  "parties": {
    "customer": {
      "address": {
        "address_lines": [
          "Eksempelvej 10"
        ],
        "postal_code": "8000",
        "city": "Aarhus C",
        "country": "DK"
      },
      "contact": {
        "name_lines": [
          "Example Customer"
        ],
        "email": "customer@example.com",
        "phone": "+4512345678"
      }
    }
  },
  "parcels": [
    {
      "identifier": "shop-parcel-1",
      "reference": "ORDER-1042-1",
      "gross_weight": 1500,
      "length": 30,
      "width": 20,
      "height": 15
    }
  ]
}
'

import requests

url = "https://api.smartsend.io/v2/teams/{teamUuid}/shipments"

payload = {
    "identifier": "shop-order-1042",
    "reference": "ORDER-1042",
    "currency": "DKK",
    "weight_unit": "g",
    "dimension_unit": "cm",
    "delivery": {
        "service_code": "postnord_agent",
        "pickup_point": { "uuid": "99999999-9999-4999-8999-999999999999" }
    },
    "parties": { "customer": {
            "address": {
                "address_lines": ["Eksempelvej 10"],
                "postal_code": "8000",
                "city": "Aarhus C",
                "country": "DK"
            },
            "contact": {
                "name_lines": ["Example Customer"],
                "email": "customer@example.com",
                "phone": "+4512345678"
            }
        } },
    "parcels": [
        {
            "identifier": "shop-parcel-1",
            "reference": "ORDER-1042-1",
            "gross_weight": 1500,
            "length": 30,
            "width": 20,
            "height": 15
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.smartsend.io/v2/teams/{teamUuid}/shipments",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'identifier' => 'shop-order-1042',
    'reference' => 'ORDER-1042',
    'currency' => 'DKK',
    'weight_unit' => 'g',
    'dimension_unit' => 'cm',
    'delivery' => [
        'service_code' => 'postnord_agent',
        'pickup_point' => [
                'uuid' => '99999999-9999-4999-8999-999999999999'
        ]
    ],
    'parties' => [
        'customer' => [
                'address' => [
                                'address_lines' => [
                                                                'Eksempelvej 10'
                                ],
                                'postal_code' => '8000',
                                'city' => 'Aarhus C',
                                'country' => 'DK'
                ],
                'contact' => [
                                'name_lines' => [
                                                                'Example Customer'
                                ],
                                'email' => 'customer@example.com',
                                'phone' => '+4512345678'
                ]
        ]
    ],
    'parcels' => [
        [
                'identifier' => 'shop-parcel-1',
                'reference' => 'ORDER-1042-1',
                'gross_weight' => 1500,
                'length' => 30,
                'width' => 20,
                'height' => 15
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.smartsend.io/v2/teams/{teamUuid}/shipments"

	payload := strings.NewReader("{\n  \"identifier\": \"shop-order-1042\",\n  \"reference\": \"ORDER-1042\",\n  \"currency\": \"DKK\",\n  \"weight_unit\": \"g\",\n  \"dimension_unit\": \"cm\",\n  \"delivery\": {\n    \"service_code\": \"postnord_agent\",\n    \"pickup_point\": {\n      \"uuid\": \"99999999-9999-4999-8999-999999999999\"\n    }\n  },\n  \"parties\": {\n    \"customer\": {\n      \"address\": {\n        \"address_lines\": [\n          \"Eksempelvej 10\"\n        ],\n        \"postal_code\": \"8000\",\n        \"city\": \"Aarhus C\",\n        \"country\": \"DK\"\n      },\n      \"contact\": {\n        \"name_lines\": [\n          \"Example Customer\"\n        ],\n        \"email\": \"customer@example.com\",\n        \"phone\": \"+4512345678\"\n      }\n    }\n  },\n  \"parcels\": [\n    {\n      \"identifier\": \"shop-parcel-1\",\n      \"reference\": \"ORDER-1042-1\",\n      \"gross_weight\": 1500,\n      \"length\": 30,\n      \"width\": 20,\n      \"height\": 15\n    }\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.smartsend.io/v2/teams/{teamUuid}/shipments")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"identifier\": \"shop-order-1042\",\n  \"reference\": \"ORDER-1042\",\n  \"currency\": \"DKK\",\n  \"weight_unit\": \"g\",\n  \"dimension_unit\": \"cm\",\n  \"delivery\": {\n    \"service_code\": \"postnord_agent\",\n    \"pickup_point\": {\n      \"uuid\": \"99999999-9999-4999-8999-999999999999\"\n    }\n  },\n  \"parties\": {\n    \"customer\": {\n      \"address\": {\n        \"address_lines\": [\n          \"Eksempelvej 10\"\n        ],\n        \"postal_code\": \"8000\",\n        \"city\": \"Aarhus C\",\n        \"country\": \"DK\"\n      },\n      \"contact\": {\n        \"name_lines\": [\n          \"Example Customer\"\n        ],\n        \"email\": \"customer@example.com\",\n        \"phone\": \"+4512345678\"\n      }\n    }\n  },\n  \"parcels\": [\n    {\n      \"identifier\": \"shop-parcel-1\",\n      \"reference\": \"ORDER-1042-1\",\n      \"gross_weight\": 1500,\n      \"length\": 30,\n      \"width\": 20,\n      \"height\": 15\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.smartsend.io/v2/teams/{teamUuid}/shipments")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"identifier\": \"shop-order-1042\",\n  \"reference\": \"ORDER-1042\",\n  \"currency\": \"DKK\",\n  \"weight_unit\": \"g\",\n  \"dimension_unit\": \"cm\",\n  \"delivery\": {\n    \"service_code\": \"postnord_agent\",\n    \"pickup_point\": {\n      \"uuid\": \"99999999-9999-4999-8999-999999999999\"\n    }\n  },\n  \"parties\": {\n    \"customer\": {\n      \"address\": {\n        \"address_lines\": [\n          \"Eksempelvej 10\"\n        ],\n        \"postal_code\": \"8000\",\n        \"city\": \"Aarhus C\",\n        \"country\": \"DK\"\n      },\n      \"contact\": {\n        \"name_lines\": [\n          \"Example Customer\"\n        ],\n        \"email\": \"customer@example.com\",\n        \"phone\": \"+4512345678\"\n      }\n    }\n  },\n  \"parcels\": [\n    {\n      \"identifier\": \"shop-parcel-1\",\n      \"reference\": \"ORDER-1042-1\",\n      \"gross_weight\": 1500,\n      \"length\": 30,\n      \"width\": 20,\n      \"height\": 15\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body