curl --request POST \
  --url https://{defaultHost}/v1/refunds \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "refund": {
    "amount": 500,
    "reason": "requested_by_customer",
    "charge_id": "680923f4-87a7-4187-b7e3-c563d43c8d73"
  }
}
'

import requests

url = "https://{defaultHost}/v1/refunds"

payload = { "refund": {
        "amount": 500,
        "reason": "requested_by_customer",
        "charge_id": "680923f4-87a7-4187-b7e3-c563d43c8d73"
    } }
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({
    refund: {
      amount: 500,
      reason: 'requested_by_customer',
      charge_id: '680923f4-87a7-4187-b7e3-c563d43c8d73'
    }
  })
};

fetch('https://{defaultHost}/v1/refunds', 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/refunds",
  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([
    'refund' => [
        'amount' => 500,
        'reason' => 'requested_by_customer',
        'charge_id' => '680923f4-87a7-4187-b7e3-c563d43c8d73'
    ]
  ]),
  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://{defaultHost}/v1/refunds"

	payload := strings.NewReader("{\n  \"refund\": {\n    \"amount\": 500,\n    \"reason\": \"requested_by_customer\",\n    \"charge_id\": \"680923f4-87a7-4187-b7e3-c563d43c8d73\"\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://{defaultHost}/v1/refunds")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"refund\": {\n    \"amount\": 500,\n    \"reason\": \"requested_by_customer\",\n    \"charge_id\": \"680923f4-87a7-4187-b7e3-c563d43c8d73\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"refund\": {\n    \"amount\": 500,\n    \"reason\": \"requested_by_customer\",\n    \"charge_id\": \"680923f4-87a7-4187-b7e3-c563d43c8d73\"\n  }\n}"

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

{
  "id": "a46e7ed2-57ca-4c21-9419-3113720b304f",
  "object": "refund",
  "amount": 500,
  "currency": "usd",
  "external_refund_id": "re_RYhhMADN64NA63S",
  "failure_reason": null,
  "live_mode": true,
  "metadata": {},
  "reason": "requested_by_customer",
  "status": "succeeded",
  "charge": "680923f4-87a7-4187-b7e3-c563d43c8d73",
  "customer": "233c2008-ba4d-4fff-9197-84032d1d276a",
  "return_request": null,
  "created_at": 1792401364,
  "updated_at": 1792401364
}