curl --request POST \
  --url https://api.breet.io/v1/payments/estimate-network-fee \
  --header 'Content-Type: application/json' \
  --header 'X-Breet-Env: <api-key>' \
  --header 'x-app-id: <api-key>' \
  --header 'x-app-secret: <api-key>' \
  --data '
{
  "token": "BTC",
  "cryptoAmount": 0.01,
  "walletAddress": "bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq"
}
'

import requests

url = "https://api.breet.io/v1/payments/estimate-network-fee"

payload = {
    "token": "BTC",
    "cryptoAmount": 0.01,
    "walletAddress": "bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq"
}
headers = {
    "x-app-id": "<api-key>",
    "x-app-secret": "<api-key>",
    "X-Breet-Env": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-app-id': '<api-key>',
    'x-app-secret': '<api-key>',
    'X-Breet-Env': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    token: 'BTC',
    cryptoAmount: 0.01,
    walletAddress: 'bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq'
  })
};

fetch('https://api.breet.io/v1/payments/estimate-network-fee', 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.breet.io/v1/payments/estimate-network-fee",
  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([
    'token' => 'BTC',
    'cryptoAmount' => 0.01,
    'walletAddress' => 'bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Breet-Env: <api-key>",
    "x-app-id: <api-key>",
    "x-app-secret: <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.breet.io/v1/payments/estimate-network-fee"

	payload := strings.NewReader("{\n  \"token\": \"BTC\",\n  \"cryptoAmount\": 0.01,\n  \"walletAddress\": \"bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq\"\n}")

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

	req.Header.Add("x-app-id", "<api-key>")
	req.Header.Add("x-app-secret", "<api-key>")
	req.Header.Add("X-Breet-Env", "<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.breet.io/v1/payments/estimate-network-fee")
  .header("x-app-id", "<api-key>")
  .header("x-app-secret", "<api-key>")
  .header("X-Breet-Env", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"token\": \"BTC\",\n  \"cryptoAmount\": 0.01,\n  \"walletAddress\": \"bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.breet.io/v1/payments/estimate-network-fee")

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

request = Net::HTTP::Post.new(url)
request["x-app-id"] = '<api-key>'
request["x-app-secret"] = '<api-key>'
request["X-Breet-Env"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"token\": \"BTC\",\n  \"cryptoAmount\": 0.01,\n  \"walletAddress\": \"bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq\"\n}"

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