curl --request POST \
  --url https://backend.swap.coffee/v1/route/smart \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "input_token": {
    "blockchain": "ton",
    "address": "native"
  },
  "output_token": {
    "blockchain": "ton",
    "address": "native"
  },
  "input_amount": 1,
  "output_amount": 1,
  "max_splits": 4,
  "additional_data": {
    "sender_address": "UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV",
    "referral_name": "tonkeeper"
  }
}
'

import requests

url = "https://backend.swap.coffee/v1/route/smart"

payload = {
    "input_token": {
        "blockchain": "ton",
        "address": "native"
    },
    "output_token": {
        "blockchain": "ton",
        "address": "native"
    },
    "input_amount": 1,
    "output_amount": 1,
    "max_splits": 4,
    "additional_data": {
        "sender_address": "UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV",
        "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({
    input_token: {blockchain: 'ton', address: 'native'},
    output_token: {blockchain: 'ton', address: 'native'},
    input_amount: 1,
    output_amount: 1,
    max_splits: 4,
    additional_data: {
      sender_address: 'UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV',
      referral_name: 'tonkeeper'
    }
  })
};

fetch('https://backend.swap.coffee/v1/route/smart', 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/v1/route/smart",
  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([
    'input_token' => [
        'blockchain' => 'ton',
        'address' => 'native'
    ],
    'output_token' => [
        'blockchain' => 'ton',
        'address' => 'native'
    ],
    'input_amount' => 1,
    'output_amount' => 1,
    'max_splits' => 4,
    'additional_data' => [
        'sender_address' => 'UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV',
        '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/v1/route/smart"

	payload := strings.NewReader("{\n  \"input_token\": {\n    \"blockchain\": \"ton\",\n    \"address\": \"native\"\n  },\n  \"output_token\": {\n    \"blockchain\": \"ton\",\n    \"address\": \"native\"\n  },\n  \"input_amount\": 1,\n  \"output_amount\": 1,\n  \"max_splits\": 4,\n  \"additional_data\": {\n    \"sender_address\": \"UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV\",\n    \"referral_name\": \"tonkeeper\"\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://backend.swap.coffee/v1/route/smart")
  .header("X-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"input_token\": {\n    \"blockchain\": \"ton\",\n    \"address\": \"native\"\n  },\n  \"output_token\": {\n    \"blockchain\": \"ton\",\n    \"address\": \"native\"\n  },\n  \"input_amount\": 1,\n  \"output_amount\": 1,\n  \"max_splits\": 4,\n  \"additional_data\": {\n    \"sender_address\": \"UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV\",\n    \"referral_name\": \"tonkeeper\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://backend.swap.coffee/v1/route/smart")

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  \"input_token\": {\n    \"blockchain\": \"ton\",\n    \"address\": \"native\"\n  },\n  \"output_token\": {\n    \"blockchain\": \"ton\",\n    \"address\": \"native\"\n  },\n  \"input_amount\": 1,\n  \"output_amount\": 1,\n  \"max_splits\": 4,\n  \"additional_data\": {\n    \"sender_address\": \"UQCNTO0Nh0Z7QNyRW1BLWfk08f2dAOw4izrx9sO6OUPg4DoV\",\n    \"referral_name\": \"tonkeeper\"\n  }\n}"

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

{
  "input_token": {
    "address": {
      "blockchain": "ton",
      "address": "native"
    },
    "metadata": {
      "name": "ARBUZ",
      "symbol": "ARBUZ",
      "decimals": 123,
      "listed": true,
      "verification": "whitelisted",
      "image_url": "<string>"
    }
  },
  "output_token": {
    "address": {
      "blockchain": "ton",
      "address": "native"
    },
    "metadata": {
      "name": "ARBUZ",
      "symbol": "ARBUZ",
      "decimals": 123,
      "listed": true,
      "verification": "whitelisted",
      "image_url": "<string>"
    }
  },
  "input_amount": 123,
  "output_amount": 123,
  "input_usd": 123,
  "output_usd": 123,
  "recommended_gas": 123,
  "price_impact": 123,
  "paths": [
    {
      "blockchain": "ton",
      "dex": "stonfi",
      "pool_address": "<string>",
      "input_token": {
        "address": {
          "blockchain": "ton",
          "address": "native"
        },
        "metadata": {
          "name": "ARBUZ",
          "symbol": "ARBUZ",
          "decimals": 123,
          "listed": true,
          "verification": "whitelisted",
          "image_url": "<string>"
        }
      },
      "output_token": {
        "address": {
          "blockchain": "ton",
          "address": "native"
        },
        "metadata": {
          "name": "ARBUZ",
          "symbol": "ARBUZ",
          "decimals": 123,
          "listed": true,
          "verification": "whitelisted",
          "image_url": "<string>"
        }
      },
      "swap": {
        "result": "fully_fulfilled",
        "input_amount": 123,
        "output_amount": 123,
        "before_reserves": [
          123
        ],
        "after_reserves": [
          123
        ],
        "reason": "<string>",
        "left_amount": 123
      },
      "recommended_gas": 123,
      "average_gas": 123,
      "next": "<array>"
    }
  ],
  "savings": 123,
  "left_amount": 123,
  "estimated_cashback_usd": 123,
  "partner_commission_ton": 123,
  "mev_protection_fee": 123
}

{
  "error": "<string>"
}