curl --request POST \
  --url https://www.landedfees.com/v1/calc \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "destination_country": "US",
  "origin_country": "CN",
  "incoterm": "FOB",
  "transport_mode": "ocean",
  "currency": "USD",
  "freight": 250,
  "insurance": 45,
  "line_items": [
    {
      "description": "Wireless earbuds, plastic housing",
      "hs_code": "8517.62.00",
      "quantity": 500,
      "unit_value": 12.5,
      "origin_country": "CN",
      "weight_kg": 0.15
    }
  ]
}
'

import requests

url = "https://www.landedfees.com/v1/calc"

payload = {
    "destination_country": "US",
    "origin_country": "CN",
    "incoterm": "FOB",
    "transport_mode": "ocean",
    "currency": "USD",
    "freight": 250,
    "insurance": 45,
    "line_items": [
        {
            "description": "Wireless earbuds, plastic housing",
            "hs_code": "8517.62.00",
            "quantity": 500,
            "unit_value": 12.5,
            "origin_country": "CN",
            "weight_kg": 0.15
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    destination_country: 'US',
    origin_country: 'CN',
    incoterm: 'FOB',
    transport_mode: 'ocean',
    currency: 'USD',
    freight: 250,
    insurance: 45,
    line_items: [
      {
        description: 'Wireless earbuds, plastic housing',
        hs_code: '8517.62.00',
        quantity: 500,
        unit_value: 12.5,
        origin_country: 'CN',
        weight_kg: 0.15
      }
    ]
  })
};

fetch('https://www.landedfees.com/v1/calc', 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://www.landedfees.com/v1/calc",
  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([
    'destination_country' => 'US',
    'origin_country' => 'CN',
    'incoterm' => 'FOB',
    'transport_mode' => 'ocean',
    'currency' => 'USD',
    'freight' => 250,
    'insurance' => 45,
    'line_items' => [
        [
                'description' => 'Wireless earbuds, plastic housing',
                'hs_code' => '8517.62.00',
                'quantity' => 500,
                'unit_value' => 12.5,
                'origin_country' => 'CN',
                'weight_kg' => 0.15
        ]
    ]
  ]),
  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://www.landedfees.com/v1/calc"

	payload := strings.NewReader("{\n  \"destination_country\": \"US\",\n  \"origin_country\": \"CN\",\n  \"incoterm\": \"FOB\",\n  \"transport_mode\": \"ocean\",\n  \"currency\": \"USD\",\n  \"freight\": 250,\n  \"insurance\": 45,\n  \"line_items\": [\n    {\n      \"description\": \"Wireless earbuds, plastic housing\",\n      \"hs_code\": \"8517.62.00\",\n      \"quantity\": 500,\n      \"unit_value\": 12.5,\n      \"origin_country\": \"CN\",\n      \"weight_kg\": 0.15\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://www.landedfees.com/v1/calc")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"destination_country\": \"US\",\n  \"origin_country\": \"CN\",\n  \"incoterm\": \"FOB\",\n  \"transport_mode\": \"ocean\",\n  \"currency\": \"USD\",\n  \"freight\": 250,\n  \"insurance\": 45,\n  \"line_items\": [\n    {\n      \"description\": \"Wireless earbuds, plastic housing\",\n      \"hs_code\": \"8517.62.00\",\n      \"quantity\": 500,\n      \"unit_value\": 12.5,\n      \"origin_country\": \"CN\",\n      \"weight_kg\": 0.15\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.landedfees.com/v1/calc")

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  \"destination_country\": \"US\",\n  \"origin_country\": \"CN\",\n  \"incoterm\": \"FOB\",\n  \"transport_mode\": \"ocean\",\n  \"currency\": \"USD\",\n  \"freight\": 250,\n  \"insurance\": 45,\n  \"line_items\": [\n    {\n      \"description\": \"Wireless earbuds, plastic housing\",\n      \"hs_code\": \"8517.62.00\",\n      \"quantity\": 500,\n      \"unit_value\": 12.5,\n      \"origin_country\": \"CN\",\n      \"weight_kg\": 0.15\n    }\n  ]\n}"

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

{
  "id": "5f6b7c8d-1234-4abc-9def-0123456789ab",
  "result": {
    "goods_value": 6250,
    "freight": 250,
    "insurance": 45,
    "customs_value": 6545,
    "duty_amount": 3796.1,
    "taxes_amount": 0,
    "fees_amount": 25.67,
    "total_landed_cost": 10366.77,
    "currency": "USD",
    "calculation_date": "2026-08-23",
    "breakdown": [
      {
        "code": "MFN",
        "amount": 0,
        "rate": 0,
        "exempted": false
      },
      {
        "code": "SEC_301",
        "amount": 1636.25,
        "rate": 0.25,
        "exempted": false
      },
      {
        "code": "SEC_232",
        "amount": 0,
        "rate": 0,
        "exempted": false
      }
    ]
  },
  "compliance_flags": [],
  "data_stale": false
}

{
  "error": "invalid body",
  "issues": [
    {
      "path": [
        "destination_country"
      ],
      "message": "String must contain exactly 2 character(s)"
    }
  ]
}

{
  "error": "unauthorized"
}

{
  "error": "quota_exceeded",
  "code": "QUOTA_EXCEEDED",
  "message": "Monthly quota exhausted. Upgrade at https://www.landedfees.com/pricing."
}

{
  "error": "missing_hs_code",
  "code": "MISSING_HS_CODE",
  "message": "Could not derive HS code for 1 line item(s)."
}

{
  "error": "rate_limited",
  "code": "RATE_LIMITED",
  "message": "Too many requests. Retry after 60 seconds."
}

{
  "error": "internal",
  "detail": "engine error"
}