Advanced Options

tip

Requirements

You will need to be familiar with the specific advanced options, you should be able to List Carrier Advanced Options.

Advanced Options

Many carriers support "Advanced Options", such as the ability to ship alcohol, bill to the receiving party, request money on delivery, or many others. You will need to see the supported options by using the List Carrier Advanced Options.

Property	Description
`bill_to_account`	string The account number to be billed
`bill_to_party`	enumerated_string `recipient` or `third_party`
`bill_to_postal_code`	string
`bill_to_country_code`	string Two letter country code as it corresponds to ISO 3166-1 alpha-2.
`contains_alcohol`	bool Indicates if the shipment contains alcohol
`delivered_duty_paid`	bool
`non_machinable`	bool
`saturday_delivery`	bool
`dry_ice`	bool
`dry_ice_weight`	see weight object below

Info

Weight Conversion

Currently all dry ice weights will be converted and saved as ounces.

Weight Object

Property	Description
`unit`	enumerated string, required
`value`	decimal, required

Example

POST /v1/labels

For this example, we're going to send Amanda Miller some wine. Since we're shipping alcohol, we're also going to have to use a special Delivery Confirmation as well. We'll be using UPS as the carrier, since they support adult_signature and alcohol delivery.

We added the dictionary shipment.advanced_options and string shipment.confirmation:

{
  "advanced_options": {
    "contains_alcohol": "true"
  },
  "confirmation": "adult_signature"
}

{
  "advanced_options": {
    "contains_alcohol": "true"
  },
  "confirmation": "adult_signature"
}

Example Request

POST /v1/labels HTTP/1.1
Host: api.shipengine.com
API-Key: __YOUR_API_KEY_HERE__
Content-Type: application/json

{
  "shipment": {
    "service_code": "ups_3_day_select",
    "ship_to": {
      "name": "Amanda Miller",
      "phone": "555-555-5555",
      "address_line1": "525 S Winchester Blvd",
      "city_locality": "San Jose",
      "state_province": "CA",
      "postal_code": "95128",
      "country_code": "US",
      "address_residential_indicator": "yes"
    },
    "ship_from": {
      "company_name": "Example Corp.",
      "name": "John Doe",
      "phone": "111-111-1111",
      "address_line1": "4009 Marathon Blvd",
      "address_line2": "Suite 300",
      "city_locality": "Austin",
      "state_province": "TX",
      "postal_code": "78756",
      "country_code": "US",
      "address_residential_indicator": "no"
    },
    "confirmation": "adult_signature",
    "advanced_options": {
      "contains_alcohol": "true"
    },
    "insurance_provider": "none",
    "total_weight": {
      "value": 3.0,
      "unit": "pound"
    },
    "packages": [
      {
        "weight": {
          "value": 3.0,
          "unit": "pound"
        }
      }
    ]
  }
}

curl -iX POST https://api.shipengine.com/v1/labels \
-H 'API-Key: __YOUR_API_KEY_HERE__' \
-H 'Content-Type: application/json' \
-d '{
  "shipment": {
    "service_code": "ups_3_day_select",
    "ship_to": {
      "name": "Amanda Miller",
      "phone": "555-555-5555",
      "address_line1": "525 S Winchester Blvd",
      "city_locality": "San Jose",
      "state_province": "CA",
      "postal_code": "95128",
      "country_code": "US",
      "address_residential_indicator": "yes"
    },
    "ship_from": {
      "company_name": "Example Corp.",
      "name": "John Doe",
      "phone": "111-111-1111",
      "address_line1": "4009 Marathon Blvd",
      "address_line2": "Suite 300",
      "city_locality": "Austin",
      "state_province": "TX",
      "postal_code": "78756",
      "country_code": "US",
      "address_residential_indicator": "no"
    },
    "confirmation": "adult_signature",
    "advanced_options": {
      "contains_alcohol": "true"
    },
    "insurance_provider": "none",
    "total_weight": {
      "value": 3.0,
      "unit": "pound"
    },
    "packages": [
      {
        "weight": {
          "value": 3.0,
          "unit": "pound"
        }
      }
    ]
  }
}'

$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$headers.Add("Host", "api.shipengine.com")
$headers.Add("API-Key", "__YOUR_API_KEY_HERE__")
$headers.Add("Content-Type", "application/json")

$body = "{`n  `"shipment`": {`n    `"service_code`": `"ups_3_day_select`",`n    `"ship_to`": {`n      `"name`": `"Amanda Miller`",`n      `"phone`": `"555-555-5555`",`n      `"address_line1`": `"525 S Winchester Blvd`",`n      `"city_locality`": `"San Jose`",`n      `"state_province`": `"CA`",`n      `"postal_code`": `"95128`",`n      `"country_code`": `"US`",`n      `"address_residential_indicator`": `"yes`"`n    },`n    `"ship_from`": {`n      `"company_name`": `"Example Corp.`",`n      `"name`": `"John Doe`",`n      `"phone`": `"111-111-1111`",`n      `"address_line1`": `"4009 Marathon Blvd`",`n      `"address_line2`": `"Suite 300`",`n      `"city_locality`": `"Austin`",`n      `"state_province`": `"TX`",`n      `"postal_code`": `"78756`",`n      `"country_code`": `"US`",`n      `"address_residential_indicator`": `"no`"`n    },`n    `"confirmation`": `"adult_signature`",`n    `"advanced_options`": {`n      `"contains_alcohol`": `"true`"`n    },`n    `"insurance_provider`": `"none`",`n    `"total_weight`": {`n      `"value`": 3.0,`n      `"unit`": `"pound`"`n    },`n    `"packages`": [`n      {`n        `"weight`": {`n          `"value`": 3.0,`n          `"unit`": `"pound`"`n        }`n      }`n    ]`n  }`n}"

$response = Invoke-RestMethod 'https://api.shipengine.com/v1/labels' -Method 'POST' -Headers $headers -Body $body
$response | ConvertTo-Json

var myHeaders = new Headers();
myHeaders.append("Host", "api.shipengine.com");
myHeaders.append("API-Key", "__YOUR_API_KEY_HERE__");
myHeaders.append("Content-Type", "application/json");

var raw = JSON.stringify({"shipment":{"service_code":"ups_3_day_select","ship_to":{"name":"Amanda Miller","phone":"555-555-5555","address_line1":"525 S Winchester Blvd","city_locality":"San Jose","state_province":"CA","postal_code":"95128","country_code":"US","address_residential_indicator":"yes"},"ship_from":{"company_name":"Example Corp.","name":"John Doe","phone":"111-111-1111","address_line1":"4009 Marathon Blvd","address_line2":"Suite 300","city_locality":"Austin","state_province":"TX","postal_code":"78756","country_code":"US","address_residential_indicator":"no"},"confirmation":"adult_signature","advanced_options":{"contains_alcohol":"true"},"insurance_provider":"none","total_weight":{"value":3,"unit":"pound"},"packages":[{"weight":{"value":3,"unit":"pound"}}]}});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://api.shipengine.com/v1/labels", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));

var request = require('request');
var options = {
  'method': 'POST',
  'url': 'https://api.shipengine.com/v1/labels',
  'headers': {
    'Host': 'api.shipengine.com',
    'API-Key': '__YOUR_API_KEY_HERE__',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({"shipment":{"service_code":"ups_3_day_select","ship_to":{"name":"Amanda Miller","phone":"555-555-5555","address_line1":"525 S Winchester Blvd","city_locality":"San Jose","state_province":"CA","postal_code":"95128","country_code":"US","address_residential_indicator":"yes"},"ship_from":{"company_name":"Example Corp.","name":"John Doe","phone":"111-111-1111","address_line1":"4009 Marathon Blvd","address_line2":"Suite 300","city_locality":"Austin","state_province":"TX","postal_code":"78756","country_code":"US","address_residential_indicator":"no"},"confirmation":"adult_signature","advanced_options":{"contains_alcohol":"true"},"insurance_provider":"none","total_weight":{"value":3,"unit":"pound"},"packages":[{"weight":{"value":3,"unit":"pound"}}]}})

};
request(options, function (error, response) { 
  if (error) throw new Error(error);
  console.log(response.body);
});

<?php

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://api.shipengine.com/v1/labels",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS =>"{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}",
  CURLOPT_HTTPHEADER => array(
    "Host: api.shipengine.com",
    "API-Key: __YOUR_API_KEY_HERE__",
    "Content-Type: application/json"
  ),
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;

import requests

url = "https://api.shipengine.com/v1/labels"

payload = "{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}"
headers = {
  'Host': 'api.shipengine.com',
  'API-Key': '__YOUR_API_KEY_HERE__',
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data = payload)

print(response.text.encode('utf8'))

require "uri"
require "net/http"

url = URI("https://api.shipengine.com/v1/labels")

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

request = Net::HTTP::Post.new(url)
request["Host"] = "api.shipengine.com"
request["API-Key"] = "__YOUR_API_KEY_HERE__"
request["Content-Type"] = "application/json"
request.body = "{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}"

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

var client = new RestClient("https://api.shipengine.com/v1/labels");
client.Timeout = -1;
var request = new RestRequest(Method.POST);
request.AddHeader("Host", "api.shipengine.com");
request.AddHeader("API-Key", "__YOUR_API_KEY_HERE__");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}",  ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);

OkHttpClient client = new OkHttpClient().newBuilder()
  .build();
MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}");
Request request = new Request.Builder()
  .url("https://api.shipengine.com/v1/labels")
  .method("POST", body)
  .addHeader("Host", "api.shipengine.com")
  .addHeader("API-Key", "__YOUR_API_KEY_HERE__")
  .addHeader("Content-Type", "application/json")
  .build();
Response response = client.newCall(request).execute();

package main

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

func main() {

  url := "https://api.shipengine.com/v1/labels"
  method := "POST"

  payload := strings.NewReader("{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}")

  client := &http.Client {
  }
  req, err := http.NewRequest(method, url, payload)

  if err != nil {
    fmt.Println(err)
  }
  req.Header.Add("Host", "api.shipengine.com")
  req.Header.Add("API-Key", "__YOUR_API_KEY_HERE__")
  req.Header.Add("Content-Type", "application/json")

  res, err := client.Do(req)
  defer res.Body.Close()
  body, err := ioutil.ReadAll(res.Body)

  fmt.Println(string(body))
}

#import <Foundation/Foundation.h>

dispatch_semaphore_t sema = dispatch_semaphore_create(0);

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://api.shipengine.com/v1/labels"]
  cachePolicy:NSURLRequestUseProtocolCachePolicy
  timeoutInterval:10.0];
NSDictionary *headers = @{
  @"Host": @"api.shipengine.com",
  @"API-Key": @"__YOUR_API_KEY_HERE__",
  @"Content-Type": @"application/json"
};

[request setAllHTTPHeaderFields:headers];
NSData *postData = [[NSData alloc] initWithData:[@"{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}" dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:postData];

[request setHTTPMethod:@"POST"];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
  if (error) {
    NSLog(@"%@", error);
  } else {
    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
    NSError *parseError = nil;
    NSDictionary *responseDictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&parseError];
    NSLog(@"%@",responseDictionary);
    dispatch_semaphore_signal(sema);
  }
}];
[dataTask resume];
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);

import Foundation

var semaphore = DispatchSemaphore (value: 0)

let parameters = "{\n  \"shipment\": {\n    \"service_code\": \"ups_3_day_select\",\n    \"ship_to\": {\n      \"name\": \"Amanda Miller\",\n      \"phone\": \"555-555-5555\",\n      \"address_line1\": \"525 S Winchester Blvd\",\n      \"city_locality\": \"San Jose\",\n      \"state_province\": \"CA\",\n      \"postal_code\": \"95128\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"yes\"\n    },\n    \"ship_from\": {\n      \"company_name\": \"Example Corp.\",\n      \"name\": \"John Doe\",\n      \"phone\": \"111-111-1111\",\n      \"address_line1\": \"4009 Marathon Blvd\",\n      \"address_line2\": \"Suite 300\",\n      \"city_locality\": \"Austin\",\n      \"state_province\": \"TX\",\n      \"postal_code\": \"78756\",\n      \"country_code\": \"US\",\n      \"address_residential_indicator\": \"no\"\n    },\n    \"confirmation\": \"adult_signature\",\n    \"advanced_options\": {\n      \"contains_alcohol\": \"true\"\n    },\n    \"insurance_provider\": \"none\",\n    \"total_weight\": {\n      \"value\": 3.0,\n      \"unit\": \"pound\"\n    },\n    \"packages\": [\n      {\n        \"weight\": {\n          \"value\": 3.0,\n          \"unit\": \"pound\"\n        }\n      }\n    ]\n  }\n}"
let postData = parameters.data(using: .utf8)

var request = URLRequest(url: URL(string: "https://api.shipengine.com/v1/labels")!,timeoutInterval: Double.infinity)
request.addValue("api.shipengine.com", forHTTPHeaderField: "Host")
request.addValue("__YOUR_API_KEY_HERE__", forHTTPHeaderField: "API-Key")
request.addValue("application/json", forHTTPHeaderField: "Content-Type")

request.httpMethod = "POST"
request.httpBody = postData

let task = URLSession.shared.dataTask(with: request) { data, response, error in 
  guard let data = data else {
    print(String(describing: error))
    return
  }
  print(String(data: data, encoding: .utf8)!)
  semaphore.signal()
}

task.resume()
semaphore.wait()

Example Response

{
  "label_id": "se-421210",
  "status": "completed",
  "shipment_id": "se-2126974",
  "ship_date": "2019-07-25T05:00:00.000Z",
  "created_at": "2019-07-25T15:24:46.657Z",
  "shipment_cost": {
    "currency": "usd",
    "amount": 29.25
  },
  "insurance_cost": {
    "currency": "usd",
    "amount": 0.0
  },
  "tracking_number": "1Z28A1R9A713398376",
  "is_return_label": false,
  "is_international": false,
  "batch_id": "",
  "carrier_id": "se-123890",
  "service_code": "ups_3_day_select",
  "package_code": "package",
  "voided": false,
  "label_format": "pdf",
  "label_layout": "4x6",
  "trackable": false,
  "carrier_code": "ups",
  "tracking_status": "unknown",
  "label_download": {
    "pdf": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.pdf",
    "png": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.png",
    "zpl": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.zpl",
    "href": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.pdf"
  },
  "form_download": null,
  "insurance_claim": null
}

{
  "label_id": "se-421210",
  "status": "completed",
  "shipment_id": "se-2126974",
  "ship_date": "2019-07-25T05:00:00.000Z",
  "created_at": "2019-07-25T15:24:46.657Z",
  "shipment_cost": {
    "currency": "usd",
    "amount": 29.25
  },
  "insurance_cost": {
    "currency": "usd",
    "amount": 0.0
  },
  "tracking_number": "1Z28A1R9A713398376",
  "is_return_label": false,
  "is_international": false,
  "batch_id": "",
  "carrier_id": "se-123890",
  "service_code": "ups_3_day_select",
  "package_code": "package",
  "voided": false,
  "label_format": "pdf",
  "label_layout": "4x6",
  "trackable": false,
  "carrier_code": "ups",
  "tracking_status": "unknown",
  "label_download": {
    "pdf": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.pdf",
    "png": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.png",
    "zpl": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.zpl",
    "href": "https://api.shipengine.com/v1/downloads/6/Q2OLdnGaqk-UzkN6pFH0lg/testlabel-202923521.pdf"
  },
  "form_download": null,
  "insurance_claim": null
}

Step 2: Ship It!

You can now print your label and ship it! Your label can be found by navigating to label_download.href.