Obtener info del cliente

import requests

response = requests.post(
    'https://api.multimensajes.com/api/cliente-info.php',
    data={
    'key': 'key': 'WA_8_a1b2c3d4e5f6g7h8'
    },
    timeout=30
)
data = response.json()
print(data)

const fetch = (...args) => import('node-fetch').then(({default: fetch}) => fetch(...args));

const params = new URLSearchParams();
params.append('key', 'WA_8_a1b2c3d4e5f6g7h8');

const response = await fetch('https://api.multimensajes.com/api/cliente-info.php', {
    method: 'POST',
    body: params
});
const data = await response.json();
console.log(data);

curl -X POST 'https://api.multimensajes.com/api/cliente-info.php' \
  -d 'key=WA_8_a1b2c3d4e5f6g7h8'

package main

import (
    "fmt"
    "net/url"
    "net/http"
    "io/ioutil"
)

func main() {
    form := url.Values{}
    form.Add("key", "WA_8_a1b2c3d4e5f6g7h8")

    resp, _ := http.PostForm("https://api.multimensajes.com/api/cliente-info.php", form)
    defer resp.Body.Close()
    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(body))
}

import java.net.HttpURLConnection;
import java.net.URL;
import java.io.OutputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class WhatsAppAPI {
    public static void main(String[] args) throws Exception {
        URL url = new URL("https://api.multimensajes.com/api/cliente-info.php");
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setRequestMethod("POST");
        con.setDoOutput(true);
        StringBuilder params = new StringBuilder();
        params.append("key=WA_8_a1b2c3d4e5f6g7h8\&");
        params.append("
        con.getOutputStream().write(params.toString().getBytes());
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String line;
        while ((line = in.readLine()) != null) System.out.println(line);
    }
}

require 'net/http'
require 'uri'
require 'json'

uri = URI('https://api.multimensajes.com/api/cliente-info.php')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

req = Net::HTTP::Post.new(uri.path)
req.set_form_data(
  'key' => 'WA_8_a1b2c3d4e5f6g7h8'
)

response = http.request(req)
puts JSON.parse(response.body)

using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Collections.Generic;

class Program {
    static async Task Main() {
        var client = new HttpClient();
        var form = new FormUrlEncodedContent(new[]
        {
            new KeyValuePair<string, string>("key", "WA_8_a1b2c3d4e5f6g7h8")
        });
        var response = await client.PostAsync("https://api.multimensajes.com/api/cliente-info.php", form);
        var content = await response.Content.ReadAsStringAsync();
        Console.WriteLine(content);
    }
}