curl --request POST \
  --url https://api.gojinko.com/v1/car_cancel_preview \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "booking_ref": "JNK-8PT9VS",
  "last_name": "Doe"
}
'

import requests

url = "https://api.gojinko.com/v1/car_cancel_preview"

payload = {
    "booking_ref": "JNK-8PT9VS",
    "last_name": "Doe"
}
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({booking_ref: 'JNK-8PT9VS', last_name: 'Doe'})
};

fetch('https://api.gojinko.com/v1/car_cancel_preview', 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.gojinko.com/v1/car_cancel_preview",
  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([
    'booking_ref' => 'JNK-8PT9VS',
    'last_name' => 'Doe'
  ]),
  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.gojinko.com/v1/car_cancel_preview"

	payload := strings.NewReader("{\n  \"booking_ref\": \"JNK-8PT9VS\",\n  \"last_name\": \"Doe\"\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.gojinko.com/v1/car_cancel_preview")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"booking_ref\": \"JNK-8PT9VS\",\n  \"last_name\": \"Doe\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gojinko.com/v1/car_cancel_preview")

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  \"booking_ref\": \"JNK-8PT9VS\",\n  \"last_name\": \"Doe\"\n}"

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

{
  "cancellation_id": "ccl_2f7c9a4e8b1d4c6f9e3a5b7d1c2e4f6a",
  "cancellable": true,
  "fee_known": true,
  "fee_type": "cancellation",
  "fee": {
    "value": 41250,
    "currency": "EUR",
    "decimal_places": 2,
    "display": "EUR 412.50"
  },
  "paid": {
    "value": 41250,
    "currency": "EUR",
    "decimal_places": 2,
    "display": "EUR 412.50"
  },
  "refund_amount": {
    "value": 41250,
    "currency": "EUR",
    "decimal_places": 2,
    "display": "EUR 412.50"
  },
  "currency": "EUR",
  "non_refundable": true,
  "refund_pending_review": true,
  "refund_review_reason": "the cancellation fee for this rental could not be established; a person will complete the cancellation",
  "manual_required": false,
  "expires_at": "2026-09-21T10:15:00Z"
}

{
  "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/authentication/api-keys"
  }
}

{
  "error": {
    "code": "PAYMENT_REQUIRED",
    "message": "Insufficient balance — this call costs $0.0150 and your organization has $0.0000 available. Top up at https://dashboard.gojinko.com/developers/billing/topup",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "NOT_FOUND",
    "message": "booking not found"
  }
}

{
  "error": {
    "code": "CONFLICT",
    "message": "an exchange is in progress for this rental; wait for it to finish before cancelling"
  },
  "code": "active_operation_exists"
}

{
  "error": {
    "code": "GONE",
    "message": "The resource no longer exists.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "BAD_REQUEST",
    "message": "A required field is missing or invalid.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "RATE_LIMITED",
    "message": "Too many requests. Retry after the Retry-After delay.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "UPSTREAM_REJECTED",
    "message": "The request was declined for this offer. Try another offer.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "UPSTREAM_UNAVAILABLE",
    "message": "The service is temporarily unavailable. Retry after the Retry-After delay.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}

{
  "error": {
    "code": "UPSTREAM_TIMEOUT",
    "message": "The request timed out before a result was available. Retry the request.",
    "doc_url": "https://docs.gojinko.com/concepts/errors"
  }
}