diff --git a/README.md b/README.md
index 69cbc7e..d15048d 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,46 @@
-# DataScience
-Curso DataScience
+# Bitrix24 Open Channel Auto Bot (Local App)
+
+Pequeno app local em PHP para registrar um bot que aparece na listagem de bots do Open Channel e responde automaticamente:
+- Ao iniciar uma conversa
+- Quando o usuário envia uma mensagem
+
+## Estrutura
+- `public/index.php`: UI de configuração
+- `public/save-config.php`: salva mensagens padrão
+- `public/install.php`: endpoint de instalação (chama imbot.bot.add/imbot.register)
+- `public/events.php`: webhooks de eventos do bot
+- `src/*`: utilitários e integrações
+- `data/config.json`: mensagens padrão
+- `data/state.json`: estado (ex.: BOT_ID)
+
+## Requisitos
+- PHP 8.0+
+- Extensão cURL habilitada
+- Servir o diretório `public` (ex.: `php -S 0.0.0.0:8080 -t public`)
+
+## Passos de instalação no Bitrix24
+1. Inicie o servidor local expondo o `public` (ou use um túnel HTTPS, ex.: ngrok)
+   ```bash
+   php -S 0.0.0.0:8080 -t public
+   ```
+2. Tenha uma URL pública HTTPS, por exemplo via ngrok:
+   ```bash
+   ngrok http http://localhost:8080
+   ```
+3. Em Bitrix24, crie um aplicativo local (Marketplace → Meus Aplicativos → Adicionar Aplicativo):
+   - URL de instalação: `https://SEU_DOMINIO/install.php`
+   - Nome: "OpenChannel Auto Bot"
+   - Permissões: ImBot, ImOpenLines
+4. Instale o app e autorize. O endpoint de instalação registrará o bot com `OPENLINE=Y` e apontará os eventos para `https://SEU_DOMINIO/events.php`.
+5. Em Contact Center / Open Channels, adicione o bot à fila/roteamento conforme necessário. Ele aparecerá na lista de bots disponíveis.
+
+## Teste
+- Inicie um chat no Open Channel; o bot deve enviar a mensagem de boas-vindas (configurável)
+- Envie mensagens; o bot responde com a mensagem padrão
+
+## Configuração
+Acesse `https://SEU_DOMINIO/` para editar as mensagens padrão.
+
+## Notas
+- Em algumas contas a API antiga `imbot.register` pode ser necessária; o código tenta ambas.
+- Para remover o bot, exclua-o no Bitrix24; o webhook `ONIMBOTDELETE` limpa o `data/state.json`.
diff --git a/data/config.json b/data/config.json
new file mode 100644
index 0000000..2efb61e
--- /dev/null
+++ b/data/config.json
@@ -0,0 +1 @@
+{\n  "default_on_start": "Olá! Somos o suporte, já vamos te atender.",\n  "default_on_message": "Recebemos sua mensagem e responderemos em breve."\n}\n
\ No newline at end of file
diff --git a/public/events.php b/public/events.php
new file mode 100644
index 0000000..ca0f592
--- /dev/null
+++ b/public/events.php
@@ -0,0 +1,55 @@
+<?php
+require_once __DIR__ . '/../src/bootstrap.php';
+
+use App\Bitrix;
+use App\Config;
+use App\Logger;
+
+header('Content-Type: application/json; charset=utf-8');
+
+try {
+    $req = Bitrix::readRequest();
+    Logger::log(['incoming' => $req]);
+
+    $event = $req['event'] ?? '';
+    $auth = $req['auth'] ?? $req;
+    $config = Config::load();
+    $state = Config::loadState();
+    $botId = (int)($state['bot_id'] ?? 0);
+
+    // Normalize payload fields across events
+    $params = $req['params'] ?? $req['data'] ?? $req;
+
+    if ($event === 'ONIMBOTJOINCHAT' || $event === 'ONIMBOTWELCOME') {
+        // Chat started. DIALOG_ID provided via params['DIALOG_ID'] or ['dialog']['id']
+        $dialogId = $params['DIALOG_ID'] ?? ($params['dialog']['id'] ?? null);
+        if ($dialogId && $botId) {
+            Bitrix::sendBotMessage($auth, $botId, (string)$dialogId, (string)($config['default_on_start'] ?? 'Olá!'));
+        }
+        echo json_encode(['ok' => true]);
+        return;
+    }
+
+    if ($event === 'ONIMBOTMESSAGEADD') {
+        // User sent message
+        $dialogId = $params['DIALOG_ID'] ?? ($params['message']['chat_id'] ?? $params['message']['dialog_id'] ?? null);
+        if ($dialogId && $botId) {
+            Bitrix::sendBotMessage($auth, $botId, (string)$dialogId, (string)($config['default_on_message'] ?? 'Obrigado pela mensagem!'));
+        }
+        echo json_encode(['ok' => true]);
+        return;
+    }
+
+    if ($event === 'ONIMBOTDELETE') {
+        // Clear state
+        Config::saveState([]);
+        echo json_encode(['ok' => true]);
+        return;
+    }
+
+    echo json_encode(['ok' => true, 'ignored' => $event]);
+} catch (Throwable $e) {
+    http_response_code(500);
+    Logger::log(['error' => $e->getMessage()]);
+    echo json_encode(['ok' => false, 'error' => $e->getMessage()]);
+}
diff --git a/public/index.php b/public/index.php
new file mode 100644
index 0000000..9fce82f
--- /dev/null
+++ b/public/index.php
@@ -0,0 +1,50 @@
+<?php
+require_once __DIR__ . '/../src/bootstrap.php';
+
+use App\Config;
+
+$config = Config::load();
+?>
+<!doctype html>
+<html lang="pt-br">
+<head>
+  <meta charset="utf-8"/>
+  <meta name="viewport" content="width=device-width, initial-scale=1"/>
+  <title>Bitrix24 Open Channel Bot - Config</title>
+  <style>body{font-family:system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";max-width:760px;margin:40px auto;padding:0 16px;line-height:1.5}label{display:block;margin-top:16px}textarea{width:100%;min-height:80px}button{margin-top:16px;padding:10px 14px}code{background:#f6f8fa;padding:2px 6px;border-radius:4px}</style>
+</head>
+<body>
+  <h1>Configuração do Bot de Open Channel</h1>
+  <p>Defina as respostas padrão que o bot enviará ao iniciar um chat e ao receber mensagens.</p>
+  <form id="config-form">
+    <label>Mensagem ao iniciar conversa
+      <textarea name="default_on_start"><?php echo htmlspecialchars($config['default_on_start'] ?? '', ENT_QUOTES, 'UTF-8'); ?></textarea>
+    </label>
+    <label>Mensagem ao receber mensagem
+      <textarea name="default_on_message"><?php echo htmlspecialchars($config['default_on_message'] ?? '', ENT_QUOTES, 'UTF-8'); ?></textarea>
+    </label>
+    <button type="submit">Salvar</button>
+  </form>
+  <hr/>
+  <h2>Registro do Bot</h2>
+  <p>Use o endpoint <code>/install.php</code> como URL de instalação no Bitrix24, e os webhooks de eventos apontam para <code>/events.php</code>.</p>
+  <script>
+  const form = document.getElementById('config-form');
+  form.addEventListener('submit', async (e)=>{
+    e.preventDefault();
+    const fd = new FormData(form);
+    const payload = {
+      default_on_start: fd.get('default_on_start'),
+      default_on_message: fd.get('default_on_message')
+    };
+    const res = await fetch('/save-config.php', {
+      method: 'POST',
+      headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify(payload)
+    });
+    const data = await res.json();
+    alert(data.message || 'Salvo');
+  });
+  </script>
+</body>
+</html>
diff --git a/public/install.php b/public/install.php
new file mode 100644
index 0000000..b4ca91f
--- /dev/null
+++ b/public/install.php
@@ -0,0 +1,26 @@
+<?php
+require_once __DIR__ . '/../src/bootstrap.php';
+
+use App\Bitrix;
+use App\Config;
+use App\Logger;
+
+header('Content-Type: application/json; charset=utf-8');
+
+try {
+    $req = Bitrix::readRequest();
+    // For Bitrix24 local app installation, we receive an auth array with domain/access_token.
+    $auth = $req['auth'] ?? $req;
+    if (!is_array($auth)) {
+        throw new RuntimeException('Auth ausente');
+    }
+
+    $baseUrl = Config::baseUrlFromGlobals();
+    $result = Bitrix::registerBot($auth, $baseUrl);
+    Logger::log(['event' => 'install', 'result' => $result]);
+    echo json_encode(['ok' => true, 'result' => $result]);
+} catch (Throwable $e) {
+    http_response_code(500);
+    Logger::log(['error' => $e->getMessage()]);
+    echo json_encode(['ok' => false, 'error' => $e->getMessage()]);
+}
diff --git a/public/save-config.php b/public/save-config.php
new file mode 100644
index 0000000..32ee937
--- /dev/null
+++ b/public/save-config.php
@@ -0,0 +1,24 @@
+<?php
+require_once __DIR__ . '/../src/bootstrap.php';
+
+use App\Config;
+use App\Logger;
+
+$input = file_get_contents('php://input') ?: '';
+$data = json_decode($input, true);
+if (!is_array($data)) {
+    http_response_code(400);
+    echo json_encode(['ok' => false, 'message' => 'JSON inválido']);
+    exit;
+}
+
+$config = [
+    'default_on_start' => trim((string)($data['default_on_start'] ?? '')),
+    'default_on_message' => trim((string)($data['default_on_message'] ?? '')),
+];
+
+Config::save($config);
+Logger::log(['event' => 'config_saved', 'config' => $config]);
+
+header('Content-Type: application/json');
+echo json_encode(['ok' => true, 'message' => 'Configurações salvas']);
diff --git a/src/Bitrix.php b/src/Bitrix.php
new file mode 100644
index 0000000..6c77367
--- /dev/null
+++ b/src/Bitrix.php
@@ -0,0 +1,112 @@
+<?php
+declare(strict_types=1);
+
+namespace App;
+
+final class Bitrix
+{
+    public static function readRequest(): array
+    {
+        $contentType = $_SERVER['CONTENT_TYPE'] ?? $_SERVER['HTTP_CONTENT_TYPE'] ?? '';
+        $raw = file_get_contents('php://input') ?: '';
+        $decoded = [];
+        if (stripos($contentType, 'application/json') !== false && $raw !== '') {
+            $decoded = json_decode($raw, true) ?: [];
+        }
+        if (!is_array($decoded) || !$decoded) {
+            // Fallback to form-urlencoded or query
+            $decoded = $_REQUEST ?: [];
+        }
+        return is_array($decoded) ? $decoded : [];
+    }
+
+    public static function call(array $auth, string $method, array $params = []): array
+    {
+        $token = $auth['access_token'] ?? $auth['auth'] ?? $auth['AUTH_ID'] ?? null;
+        $clientEndpoint = $auth['client_endpoint'] ?? null; // e.g., https://example.bitrix24.com/rest/
+        $domain = $auth['domain'] ?? null; // e.g., example.bitrix24.com
+
+        if (!$token || (!$clientEndpoint && !$domain)) {
+            throw new \RuntimeException('Auth inválido: domain/client_endpoint ou token ausentes');
+        }
+
+        // Build REST base URL depending on what is provided
+        if ($clientEndpoint) {
+            $base = rtrim($clientEndpoint, '/'); // already contains /rest
+            $url = $base . '/' . $method . '.json';
+        } else {
+            // Fallback to domain
+            $host = (strpos((string)$domain, 'http') === 0) ? rtrim((string)$domain, '/') : ('https://' . $domain);
+            $url = rtrim($host, '/') . '/rest/' . $method . '.json';
+        }
+
+        $postFields = $params;
+        $postFields['auth'] = $token;
+
+        $ch = curl_init($url);
+        curl_setopt_array($ch, [
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_POST => true,
+            CURLOPT_POSTFIELDS => http_build_query($postFields),
+            CURLOPT_HTTPHEADER => ['Content-Type: application/x-www-form-urlencoded'],
+            CURLOPT_TIMEOUT => 15,
+        ]);
+        $resp = curl_exec($ch);
+        $errno = curl_errno($ch);
+        $error = curl_error($ch);
+        curl_close($ch);
+        if ($errno) {
+            throw new \RuntimeException('Erro HTTP: ' . $error);
+        }
+        $data = json_decode($resp ?: 'null', true);
+        return is_array($data) ? $data : ['raw' => $resp];
+    }
+
+    public static function registerBot(array $auth, string $baseUrl, array $overrides = []): array
+    {
+        $state = Config::loadState();
+        $code = $state['bot_code'] ?? ('openline_autobot_' . substr(md5(($overrides['seed'] ?? '') . microtime(true)), 0, 8));
+        $eventsUrl = rtrim($baseUrl, '/') . '/events.php';
+
+        $params = [
+            'CODE' => $code,
+            'TYPE' => 'B',
+            'OPENLINE' => 'Y',
+            'EVENT_MESSAGE_ADD' => $eventsUrl,
+            'EVENT_WELCOME_MESSAGE' => $eventsUrl,
+            'EVENT_BOT_DELETE' => $eventsUrl,
+            'FIELDS' => [
+                'NAME' => $overrides['NAME'] ?? 'OpenChannel Auto Bot',
+                'COLOR' => $overrides['COLOR'] ?? 'AQUA',
+            ],
+        ];
+
+        $result = self::call($auth, 'imbot.bot.add', $params);
+        if (isset($result['error'])) {
+            // Try alternative legacy method name if available
+            try {
+                $result = self::call($auth, 'imbot.register', $params);
+            } catch (\Throwable $e) {
+                // keep original
+            }
+        }
+
+        if (!empty($result['result'])) {
+            $botId = (int)$result['result'];
+            $state['bot_id'] = $botId;
+            $state['bot_code'] = $code;
+            Config::saveState($state);
+        }
+        return $result;
+    }
+
+    public static function sendBotMessage(array $auth, int $botId, string $dialogId, string $message): array
+    {
+        $params = [
+            'BOT_ID' => $botId,
+            'DIALOG_ID' => $dialogId,
+            'MESSAGE' => $message,
+        ];
+        return self::call($auth, 'imbot.message.add', $params);
+    }
+}
diff --git a/src/Config.php b/src/Config.php
new file mode 100644
index 0000000..e00f3f2
--- /dev/null
+++ b/src/Config.php
@@ -0,0 +1,78 @@
+<?php
+declare(strict_types=1);
+
+namespace App;
+
+final class Config
+{
+    public static function load(): array
+    {
+        $path = self::configPath();
+        if (is_file($path)) {
+            $json = file_get_contents($path);
+            $data = json_decode($json ?: '[]', true);
+            if (is_array($data)) {
+                return $data;
+            }
+        }
+        return [
+            'default_on_start' => 'Olá! Somos o suporte, já vamos te atender.',
+            'default_on_message' => 'Recebemos sua mensagem e responderemos em breve.'
+        ];
+    }
+
+    public static function save(array $config): void
+    {
+        if (!is_dir(DATA_DIR)) {
+            mkdir(DATA_DIR, 0775, true);
+        }
+        file_put_contents(self::configPath(), json_encode($config, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
+    }
+
+    public static function loadState(): array
+    {
+        $path = self::statePath();
+        if (is_file($path)) {
+            $json = file_get_contents($path);
+            $data = json_decode($json ?: '[]', true);
+            if (is_array($data)) {
+                return $data;
+            }
+        }
+        return [];
+    }
+
+    public static function saveState(array $state): void
+    {
+        if (!is_dir(DATA_DIR)) {
+            mkdir(DATA_DIR, 0775, true);
+        }
+        file_put_contents(self::statePath(), json_encode($state, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
+    }
+
+    public static function configPath(): string
+    {
+        return DATA_DIR . '/config.json';
+    }
+
+    public static function statePath(): string
+    {
+        return DATA_DIR . '/state.json';
+    }
+
+    public static function baseUrlFromGlobals(): string
+    {
+        $isHttps = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off')
+            || (($_SERVER['HTTP_X_FORWARDED_PROTO'] ?? '') === 'https')
+            || (($_SERVER['REQUEST_SCHEME'] ?? '') === 'https');
+        $scheme = $isHttps ? 'https' : 'http';
+        $host = $_SERVER['HTTP_HOST'] ?? ($_SERVER['SERVER_NAME'] ?? 'localhost');
+        $script = $_SERVER['SCRIPT_NAME'] ?? '/';
+        $dir = rtrim(str_replace('\\', '/', dirname($script)), '/');
+        if ($dir === '' || $dir === '.') {
+            $dir = '/';
+        }
+        $base = $scheme . '://' . $host . ($dir === '/' ? '' : $dir);
+        return $base;
+    }
+}
diff --git a/src/Logger.php b/src/Logger.php
new file mode 100644
index 0000000..315d89a
--- /dev/null
+++ b/src/Logger.php
@@ -0,0 +1,17 @@
+<?php
+declare(strict_types=1);
+
+namespace App;
+
+final class Logger
+{
+    public static function log($payload): void
+    {
+        if (!is_dir(DATA_DIR)) {
+            mkdir(DATA_DIR, 0775, true);
+        }
+        $line = is_string($payload) ? $payload : json_encode($payload, JSON_UNESCAPED_UNICODE);
+        $ts = date('c');
+        file_put_contents(DATA_DIR . '/app.log', "[$ts] $line\n", FILE_APPEND);
+    }
+}
diff --git a/src/bootstrap.php b/src/bootstrap.php
new file mode 100644
index 0000000..c4e14ad
--- /dev/null
+++ b/src/bootstrap.php
@@ -0,0 +1,15 @@
+<?php
+declare(strict_types=1);
+
+namespace App;
+
+if (!defined('APP_ROOT')) {
+    define('APP_ROOT', dirname(__DIR__));
+}
+if (!defined('DATA_DIR')) {
+    define('DATA_DIR', APP_ROOT . '/data');
+}
+
+require_once __DIR__ . '/Config.php';
+require_once __DIR__ . '/Bitrix.php';
+require_once __DIR__ . '/Logger.php';