curl --request GET \
  --url https://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_id} \
  --header 'x-trackstar-access-token: <x-trackstar-access-token>' \
  --header 'x-trackstar-api-key: <x-trackstar-api-key>'

import requests

url = "https://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_id}"

headers = {
    "x-trackstar-api-key": "<x-trackstar-api-key>",
    "x-trackstar-access-token": "<x-trackstar-access-token>"
}

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

print(response.text)

const options = {
  method: 'GET',
  headers: {
    'x-trackstar-api-key': '<x-trackstar-api-key>',
    'x-trackstar-access-token': '<x-trackstar-access-token>'
  }
};

fetch('https://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_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://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_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 => [
    "x-trackstar-access-token: <x-trackstar-access-token>",
    "x-trackstar-api-key: <x-trackstar-api-key>"
  ],
]);

$response = curl_exec($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://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_id}"

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

	req.Header.Add("x-trackstar-api-key", "<x-trackstar-api-key>")
	req.Header.Add("x-trackstar-access-token", "<x-trackstar-access-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://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_id}")
  .header("x-trackstar-api-key", "<x-trackstar-api-key>")
  .header("x-trackstar-access-token", "<x-trackstar-access-token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://production.trackstarhq.com/carrier/invoice-line-items/{invoice_line_item_id}")

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

request = Net::HTTP::Get.new(url)
request["x-trackstar-api-key"] = '<x-trackstar-api-key>'
request["x-trackstar-access-token"] = '<x-trackstar-access-token>'

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

{
  "data": {
    "id": "invoice_line_item_id",
    "created_date": "2022-01-01T00:00:00Z",
    "updated_date": "2022-01-02T05:05:05Z",
    "transaction_date": "2025-11-15T00:00:00Z",
    "account_id": "account_id",
    "invoice_id": "invoice_id",
    "tracking_number": "tracking_number",
    "gross_cost": 10,
    "net_cost": 8,
    "charge_description": "Freight Charge",
    "raw": "<unknown>",
    "trackstar_tags": [
      "tag1",
      "tag2",
      {
        "tag3": "value3"
      }
    ],
    "trackstar_created_date": "2023-03-15T13:45:30Z",
    "trackstar_updated_date": "2023-03-15T13:45:30Z"
  }
}

{
  "error": "<string>",
  "id": "<string>"
}

{
  "error": "<string>",
  "detail": {
    "<location>": {
      "<field_name>": [
        "<string>"
      ]
    }
  }
}