curl --request GET \
  --url https://{defaultHost}/v1/customers/{id} \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://{defaultHost}/v1/customers/{id}"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://{defaultHost}/v1/customers/{id}', 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/customers/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://{defaultHost}/v1/customers/{id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://{defaultHost}/v1/customers/{id}")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

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

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "id": "f70f47d6-f28b-4912-ad2e-1b7a061a60df",
  "object": "customer",
  "affiliation_expires_at": null,
  "billing_matches_shipping": true,
  "email": "customer-22@example.com",
  "first_name": null,
  "indexed": true,
  "last_name": null,
  "live_mode": true,
  "name": null,
  "phone": null,
  "unsubscribed": false,
  "tax_enabled": true,
  "portal_url": "http://app.example.com/portal_redirect/customers/f70f47d6-f28b-4912-ad2e-1b7a061a60df",
  "affiliation": null,
  "billing_address": "25e1f4b8-37f3-4d33-8d1d-2062a094b351",
  "default_payment_method": null,
  "shipping_address": null,
  "tax_identifier": null,
  "created_at": 1782485820,
  "updated_at": 1782485820
}