diff --git a/.smallclaw/config.json b/.smallclaw/config.json
index a600747..08f0cb9 100644
--- a/.smallclaw/config.json
+++ b/.smallclaw/config.json
@@ -214,15 +214,19 @@
     "path": "/hooks"
   },
   "voice": {
-    "enabled": false,
+    "enabled": true,
+    "ffmpegPath": "/usr/bin/ffmpeg",
     "stt": {
       "provider": "whisper_cpp",
-      "model": "ggml-base.bin",
+      "whisperPath": "/usr/local/bin/whisper-cli",
+      "modelPath": "/usr/local/share/whisper-models/ggml-base.bin",
       "language": "ko"
     },
     "tts": {
       "provider": "piper",
-      "model": "ko_KR-kss-medium"
+      "piperPath": "/usr/local/bin/piper",
+      "modelPath": "/usr/local/share/piper-voices/ko_KR-kss-medium.onnx",
+      "configPath": "/usr/local/share/piper-voices/ko_KR-kss-medium.onnx.json"
     }
   },
   "search": {
diff --git a/src/gateway/server-v2.ts b/src/gateway/server-v2.ts
index d0812d8..dd5e72a 100644
--- a/src/gateway/server-v2.ts
+++ b/src/gateway/server-v2.ts
@@ -144,6 +144,8 @@ import {
   clearFileOpCheckpoint,
 } from '../orchestration/file-op-v2';
 import { OllamaProcessManager } from './ollama-process-manager';
+import { transcribeAudio } from '../tools/stt.js';
+import { synthesizeSpeech, isTTSAvailable } from '../tools/tts.js';
 import { raceWithWatchdog, PreemptState } from './preempt-watchdog';
 import { detectGpu, logGpuStatus } from './gpu-detector';
 import { internalAgentTaskRouter } from './internal-agent-task';
@@ -8718,6 +8720,42 @@ app.put('/api/files/{*filePath}', (req: express.Request, res: express.Response)
   }
 });
 
+// ── Voice: STT (Whisper) ──────────────────────────────────────────────────
+app.post('/api/voice/stt', async (req: express.Request, res: express.Response) => {
+  const contentType = String(req.headers['content-type'] || 'audio/webm');
+  const fmt = contentType.includes('ogg') ? 'ogg'
+             : contentType.includes('wav') ? 'wav'
+             : contentType.includes('mp4') || contentType.includes('m4a') ? 'm4a'
+             : 'webm';
+  const chunks: Buffer[] = [];
+  req.on('data', (c: Buffer) => chunks.push(c));
+  req.on('end', async () => {
+    const buf = Buffer.concat(chunks);
+    if (!buf.length) { res.status(400).json({ success: false, error: 'No audio data' }); return; }
+    try {
+      const result = await transcribeAudio(buf, fmt);
+      res.json({ success: true, text: result.text.trim(), language: result.language });
+    } catch (e: any) {
+      res.status(500).json({ success: false, error: String(e?.message || e) });
+    }
+  });
+  req.on('error', (e: any) => res.status(500).json({ success: false, error: String(e?.message || e) }));
+});
+
+// ── Voice: TTS (Piper) ────────────────────────────────────────────────────
+app.post('/api/voice/tts', async (req: express.Request, res: express.Response) => {
+  const { text } = req.body || {};
+  if (!text || typeof text !== 'string') { res.status(400).json({ success: false, error: 'text required' }); return; }
+  if (!isTTSAvailable()) { res.status(503).json({ success: false, error: 'TTS not configured' }); return; }
+  try {
+    const audio = await synthesizeSpeech(text.slice(0, 2000));
+    res.set('Content-Type', 'audio/ogg');
+    res.send(audio);
+  } catch (e: any) {
+    res.status(500).json({ success: false, error: String(e?.message || e) });
+  }
+});
+
 // ── Canvas code execution ──────────────────────────────────────────────────
 const CANVAS_EXEC_EXT: Record<string, string> = {
   '.py': 'python3', '.js': 'node', '.ts': 'npx tsx', '.mjs': 'node',
diff --git a/web-ui/index.html b/web-ui/index.html
index 8348f3e..7bb3fe4 100644
--- a/web-ui/index.html
+++ b/web-ui/index.html
@@ -1021,6 +1021,10 @@
 
   .btn { padding: 10px 16px; font-size: 12px; }
   .btn-sm { padding: 6px 10px; font-size: 11px; border-radius: 10px; }
+  #mic-btn.recording { background: #ef4444 !important; animation: mic-pulse 1s ease-in-out infinite; }
+  @keyframes mic-pulse { 0%,100%{opacity:1} 50%{opacity:0.55} }
+  .tts-btn { background:none;border:none;cursor:pointer;font-size:13px;padding:1px 4px;border-radius:4px;opacity:0.45;vertical-align:middle;line-height:1; }
+  .tts-btn:hover,.tts-btn.playing{opacity:1;background:var(--panel-2);}
   .export-dropdown { position:relative; display:inline-block; }
   .export-menu { display:none; position:absolute; right:0; top:calc(100% + 4px); background:var(--panel-2); border:1px solid var(--border); border-radius:8px; box-shadow:0 4px 16px rgba(0,0,0,0.18); z-index:2000; min-width:160px; overflow:hidden; }
   .export-menu button { display:block; width:100%; padding:8px 14px; text-align:left; background:none; border:none; cursor:pointer; font-size:12px; color:var(--text); white-space:nowrap; }
@@ -2420,6 +2424,7 @@
       <div class="chat-input-row">
         <input type="file" id="file-upload" accept="image/*,.pdf,.txt,.md,.csv,.xlsx,.xls,.docx,.pptx" style="display:none" onchange="handleFileUpload(this)" />
         <button class="send-btn" onclick="document.getElementById('file-upload').click()" title="파일 첨부 (이미지·PDF·Excel·txt 등)" style="font-size:18px;width:44px;height:44px" aria-label="파일 첨부">📎</button>
+        <button class="send-btn" id="mic-btn" onclick="toggleMicRecording()" title="음성 입력 (클릭: 시작/중지)" style="font-size:18px;width:44px;height:44px" aria-label="음성 입력">🎤</button>
         <textarea
           id="chat-input"
           placeholder="메시지를 입력하세요... (Enter로 전송, Shift+Enter로 줄바꿈)"
@@ -4745,7 +4750,7 @@ function renderChatMessages() {
     <div class="msg ${msg.role}${pinClass}${selectedClass}${confirmedClass}"${clickHandler}>
       <div class="msg-avatar">${msg.role === 'user' ? 'U' : '<img src="cherry_logo.png" style="width:48px;height:48px;border-radius:6px">'}</div>
       <div class="msg-body">
-        <div class="msg-role">${msg.role === 'user' ? 'You' : (msg.mode === 'agentic' ? 'CherryClaw (Agent)' : 'CherryClaw')}</div>
+        <div class="msg-role">${msg.role === 'user' ? 'You' : (msg.mode === 'agentic' ? 'CherryClaw (Agent)' : 'CherryClaw')}${msg.role === 'ai' ? ` <button class="tts-btn" onclick="playTTSMsg(this,${idx})" title="음성으로 듣기">🔊</button>` : ''}</div>
         ${msg.role === 'ai' ? renderAssistantContent(msg.content) : `<div class="msg-content">${renderMarkdown(msg.display !== undefined ? msg.display : msg.content, { hideDownload: true })}</div>`}
         ${msg.role === 'ai' ? renderArtifacts(msg.artifacts) : ''}
         ${msg.role === 'ai' ? renderFileDownloads(msg.steps, msg.processEntries, msg.content) : ''}
@@ -8827,6 +8832,128 @@ function initLuckyModalInteraction() {
   });
 }
 
+// ── Voice: STT (마이크 입력) ─────────────────────────────────────────────
+var _mediaRecorder = null;
+var _audioChunks = [];
+var _isRecording = false;
+var _micMimeType = '';
+
+function toggleMicRecording() {
+  if (_isRecording) stopMicRecording();
+  else startMicRecording();
+}
+
+function startMicRecording() {
+  navigator.mediaDevices.getUserMedia({ audio: true, video: false })
+    .then(function(stream) {
+      _audioChunks = [];
+      _micMimeType = MediaRecorder.isTypeSupported('audio/webm;codecs=opus') ? 'audio/webm;codecs=opus'
+                   : MediaRecorder.isTypeSupported('audio/webm') ? 'audio/webm'
+                   : MediaRecorder.isTypeSupported('audio/ogg;codecs=opus') ? 'audio/ogg;codecs=opus'
+                   : '';
+      var opts = _micMimeType ? { mimeType: _micMimeType } : {};
+      _mediaRecorder = new MediaRecorder(stream, opts);
+      _mediaRecorder.ondataavailable = function(e) { if (e.data.size > 0) _audioChunks.push(e.data); };
+      _mediaRecorder.onstop = function() {
+        stream.getTracks().forEach(function(t) { t.stop(); });
+        var blob = new Blob(_audioChunks, { type: _micMimeType || 'audio/webm' });
+        sendToSTT(blob);
+      };
+      _mediaRecorder.start();
+      _isRecording = true;
+      var btn = document.getElementById('mic-btn');
+      if (btn) { btn.textContent = '⏹'; btn.title = '녹음 중지 (클릭)'; btn.classList.add('recording'); }
+    })
+    .catch(function(e) { alert('마이크 접근 실패: ' + e.message); });
+}
+
+function stopMicRecording() {
+  if (_mediaRecorder && _isRecording) {
+    _mediaRecorder.stop();
+    _isRecording = false;
+    var btn = document.getElementById('mic-btn');
+    if (btn) { btn.textContent = '⌛'; btn.title = '인식 중…'; btn.classList.remove('recording'); }
+  }
+}
+
+function sendToSTT(blob) {
+  var ct = _micMimeType || 'audio/webm';
+  fetch('/api/voice/stt', {
+    method: 'POST',
+    headers: Object.assign({ 'Content-Type': ct }, authHeaders()),
+    credentials: 'include',
+    body: blob,
+  })
+  .then(function(r) { return r.json(); })
+  .then(function(data) {
+    var btn = document.getElementById('mic-btn');
+    if (btn) { btn.textContent = '🎤'; btn.title = '음성 입력 (클릭: 시작/중지)'; }
+    if (data.success && data.text) {
+      var input = document.getElementById('chat-input');
+      if (input) {
+        input.value = (input.value ? input.value + ' ' : '') + data.text;
+        input.focus();
+        input.dispatchEvent(new Event('input'));
+      }
+    } else if (!data.success) {
+      alert('음성 인식 실패: ' + (data.error || '알 수 없는 오류'));
+    }
+  })
+  .catch(function(e) {
+    var btn = document.getElementById('mic-btn');
+    if (btn) { btn.textContent = '🎤'; btn.title = '음성 입력 (클릭: 시작/중지)'; }
+    alert('STT 오류: ' + e.message);
+  });
+}
+
+// ── Voice: TTS (음성 출력) ───────────────────────────────────────────────
+var _ttsAudio = null;
+var _ttsBtnActive = null;
+
+function playTTSMsg(btn, idx) {
+  var msg = chatHistory[idx];
+  if (!msg) return;
+  var text = (msg.content || '').replace(/!\[.*?\]\(.*?\)/g, '').replace(/\[([^\]]+)\]\([^)]+\)/g, '$1').replace(/```[\s\S]*?```/g, '').replace(/[#*`_~>]/g, ' ').replace(/\s+/g, ' ').trim();
+  if (!text) return;
+  // Toggle off if same button is playing
+  if (_ttsBtnActive === btn && _ttsAudio) {
+    _ttsAudio.pause(); _ttsAudio = null;
+    btn.textContent = '🔊'; btn.classList.remove('playing');
+    _ttsBtnActive = null;
+    return;
+  }
+  // Stop previous
+  if (_ttsAudio) { _ttsAudio.pause(); _ttsAudio = null; }
+  if (_ttsBtnActive) { _ttsBtnActive.textContent = '🔊'; _ttsBtnActive.classList.remove('playing'); }
+  btn.textContent = '⌛'; btn.classList.add('playing');
+  _ttsBtnActive = btn;
+  fetch('/api/voice/tts', {
+    method: 'POST',
+    headers: Object.assign({ 'Content-Type': 'application/json' }, authHeaders()),
+    credentials: 'include',
+    body: JSON.stringify({ text: text.slice(0, 2000) }),
+  })
+  .then(function(r) { if (!r.ok) throw new Error('TTS 오류 ' + r.status); return r.blob(); })
+  .then(function(blob) {
+    var url = URL.createObjectURL(blob);
+    _ttsAudio = new Audio(url);
+    _ttsAudio.onended = function() {
+      URL.revokeObjectURL(url); _ttsAudio = null;
+      btn.textContent = '🔊'; btn.classList.remove('playing'); _ttsBtnActive = null;
+    };
+    _ttsAudio.onerror = function() {
+      URL.revokeObjectURL(url); _ttsAudio = null;
+      btn.textContent = '🔊'; btn.classList.remove('playing'); _ttsBtnActive = null;
+    };
+    btn.textContent = '⏹';
+    _ttsAudio.play();
+  })
+  .catch(function(e) {
+    btn.textContent = '🔊'; btn.classList.remove('playing'); _ttsBtnActive = null;
+    alert('TTS 오류: ' + e.message);
+  });
+}
+
 function saveLuckyModal() {
   var url = _luckyCurrentSaveUrl;
   if (!url) { alert('저장할 파일 경로가 없습니다.'); return; }