curl --request PATCH \
  --url https://{defaultHost}/v1/shipments/{id}/purchase \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "shipment": {
    "rate_id": "rate_1",
    "label_file_type": "PDF"
  }
}
'

import requests

url = "https://{defaultHost}/v1/shipments/{id}/purchase"

payload = { "shipment": {
        "rate_id": "rate_1",
        "label_file_type": "PDF"
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({shipment: {rate_id: 'rate_1', label_file_type: 'PDF'}})
};

fetch('https://{defaultHost}/v1/shipments/{id}/purchase', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{defaultHost}/v1/shipments/{id}/purchase",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'shipment' => [
        'rate_id' => 'rate_1',
        'label_file_type' => 'PDF'
    ]
  ]),
  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://{defaultHost}/v1/shipments/{id}/purchase"

	payload := strings.NewReader("{\n  \"shipment\": {\n    \"rate_id\": \"rate_1\",\n    \"label_file_type\": \"PDF\"\n  }\n}")

	req, _ := http.NewRequest("PATCH", 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.patch("https://{defaultHost}/v1/shipments/{id}/purchase")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"shipment\": {\n    \"rate_id\": \"rate_1\",\n    \"label_file_type\": \"PDF\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{defaultHost}/v1/shipments/{id}/purchase")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"shipment\": {\n    \"rate_id\": \"rate_1\",\n    \"label_file_type\": \"PDF\"\n  }\n}"

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

{
  "id": "6874d17a-6f4f-45cd-ac4b-acf2634cb5ba",
  "object": "shipment",
  "carrier": "USPS",
  "carrier_messages": [],
  "contact_validations": null,
  "dimensions": {
    "length": 10,
    "width": 8,
    "height": 5,
    "unit": "in"
  },
  "eta": null,
  "inherit_weight": false,
  "label_file_type": "PDF",
  "label_url": "https://deliver.goshippo.com/1e3adda1934443079737edb336067106.pdf?Expires=1806494587&Signature=YcAo0uG7lvxdwCmD8KPOui7O~u7KGPKWQszBtrLcdfQg5hdRZlfabsM4zSa69zRVgpEH8Omon0ktgRETyPPoIP9WOyW4CvKa7tEKyoOMi04YQ7JLCNZJXybHoJ9Z31gYqfd5RYfn1SoFTaFUDjQ17Id9RMTGG-JICM7a8fbsKFBoaGEE6zme~POyX~KX2rhlv2XiQFfmXhoJn1tF1yeh0gTJ4Ayefno4u34AeiS2XipX1anBqYyrtsxIXa7gG8NC-QufLNSgBUMcnkDLT04aa8-XXvI7IsVAkml1QqzAHq2Ur-2HVYaxYhA1V3VUjkwv8E6LwkyS~23jEysytNbdNw__&Key-Pair-Id=APKAJRICFXQ2S4YUQRSQ",
  "live_mode": true,
  "rates": [
    {
      "id": "rate_1",
      "amount": 550,
      "currency": "usd",
      "provider": "USPS",
      "service_name": "Priority",
      "estimated_days": 3,
      "tags": [
        "bestvalue"
      ],
      "duration_terms": null,
      "provider_logo_url": "https://example.com/usps.png"
    }
  ],
  "selected_rate": {
    "id": "rate_1",
    "amount": 550,
    "currency": "usd",
    "provider": "USPS",
    "service_name": "Priority",
    "estimated_days": 3,
    "tags": [
      "bestvalue"
    ],
    "duration_terms": null,
    "provider_logo_url": "https://example.com/usps.png"
  },
  "shipping_date": 1792368000,
  "status": "purchased",
  "tracking_number": "9234690396055702568186",
  "tracking_status": null,
  "tracking_url": "https://tools.usps.com/go/TrackConfirmAction_input?origTrackNum=9234690396055702568186",
  "weight": "2.0",
  "weight_unit": "lb",
  "carrier_parcel_template_token": null,
  "from_contact": "1f21e26d-0a9c-44b4-8634-c5dce72a16cb",
  "fulfillment": "d1b27f20-43eb-47c0-a224-86a713433280",
  "parcel_template": null,
  "shipping_provider": "4a688112-eb8b-456f-ba81-fad74c19e7c6",
  "to_contact": "e4d6807b-a449-4256-aaaa-a5b71dc91ebd",
  "created_at": 1792401387,
  "updated_at": 1792401387
}