curl --request POST \
  --url https://backend.swap.coffee/v2/unstake/ton/transaction \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "sender_address": "UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV",
  "amount": 0.05,
  "token_address": "EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH",
  "referral_name": "tonkeeper"
}
'

import requests

url = "https://backend.swap.coffee/v2/unstake/ton/transaction"

payload = {
    "sender_address": "UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV",
    "amount": 0.05,
    "token_address": "EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH",
    "referral_name": "tonkeeper"
}
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({
    sender_address: 'UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV',
    amount: 0.05,
    token_address: 'EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH',
    referral_name: 'tonkeeper'
  })
};

fetch('https://backend.swap.coffee/v2/unstake/ton/transaction', 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://backend.swap.coffee/v2/unstake/ton/transaction",
  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([
    'sender_address' => 'UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV',
    'amount' => 0.05,
    'token_address' => 'EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH',
    'referral_name' => 'tonkeeper'
  ]),
  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://backend.swap.coffee/v2/unstake/ton/transaction"

	payload := strings.NewReader("{\n  \"sender_address\": \"UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV\",\n  \"amount\": 0.05,\n  \"token_address\": \"EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH\",\n  \"referral_name\": \"tonkeeper\"\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://backend.swap.coffee/v2/unstake/ton/transaction")
  .header("X-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"sender_address\": \"UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV\",\n  \"amount\": 0.05,\n  \"token_address\": \"EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH\",\n  \"referral_name\": \"tonkeeper\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://backend.swap.coffee/v2/unstake/ton/transaction")

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  \"sender_address\": \"UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV\",\n  \"amount\": 0.05,\n  \"token_address\": \"EQDY6PMeMbQSz7dltNN4RRTIxyuBJX4dQESOy8cWR2tUgBxH\",\n  \"referral_name\": \"tonkeeper\"\n}"

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

{
  "payload_cell": "aSDinaTvuI8gbWludGxpZnk=",
  "address": "EQCM3B12QK1e4yZSf8GtBRT0aLMNyEsBc_DhVfRRtOEffLez",
  "value": "<string>",
  "state_init": "aSDinaTvuI8gbWludGxpZnk=",
  "extra": [
    {
      "id": 123,
      "amount": "<string>"
    }
  ]
}

{
  "error": "<string>"
}