curl --request POST \
  --url https://api.example.com/v1/trip \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "trip_id": "trip_1048576",
  "add_item": {
    "trip_item_token": "tok_flt_9f3b2a17"
  }
}
'

import requests

url = "https://api.example.com/v1/trip"

payload = {
    "trip_id": "trip_1048576",
    "add_item": { "trip_item_token": "tok_flt_9f3b2a17" }
}
headers = {
    "X-API-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-API-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({trip_id: 'trip_1048576', add_item: {trip_item_token: 'tok_flt_9f3b2a17'}})
};

fetch('https://api.example.com/v1/trip', 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://api.example.com/v1/trip",
  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([
    'trip_id' => 'trip_1048576',
    'add_item' => [
        'trip_item_token' => 'tok_flt_9f3b2a17'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-Key: <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"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/v1/trip"

	payload := strings.NewReader("{\n  \"trip_id\": \"trip_1048576\",\n  \"add_item\": {\n    \"trip_item_token\": \"tok_flt_9f3b2a17\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-API-Key", "<api-key>")
	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://api.example.com/v1/trip")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"trip_id\": \"trip_1048576\",\n  \"add_item\": {\n    \"trip_item_token\": \"tok_flt_9f3b2a17\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/trip")

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

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"trip_id\": \"trip_1048576\",\n  \"add_item\": {\n    \"trip_item_token\": \"tok_flt_9f3b2a17\"\n  }\n}"

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

{
  "trip_id": "trip_1048576",
  "status": "draft",
  "actions_performed": [
    "created",
    "add_item"
  ],
  "items": [
    {
      "item_id": "itm_4b91c2",
      "kind": "flight",
      "price": {
        "amount": 318.4,
        "value": 123,
        "currency": "USD",
        "decimal_places": 2
      },
      "pax_count": 1,
      "available_ancillaries": [
        null
      ],
      "selected_ancillaries": [
        null
      ]
    }
  ],
  "travelers": [
    null
  ],
  "contact": {
    "email": "<string>",
    "phone": "<string>"
  },
  "totals": {
    "currency": "USD",
    "total": 318.4
  }
}

{
  "error": {
    "code": "BAD_REQUEST",
    "message": "Malformed JSON in request body.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "AUTH_REQUIRED",
    "message": "Invalid or expired API key.",
    "doc_url": "https://docs.gojinko.com/api-reference/authentication"
  }
}

{
  "error": {
    "code": "BAD_REQUEST",
    "message": "origins: origins is required; trip_type: trip_type is required",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "RATE_LIMITED",
    "message": "Rate limit or quota exceeded.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "UPSTREAM_ERROR",
    "message": "Upstream travel provider returned an error. Please retry.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}