diff --git a/IDEA.MD b/IDEA.MD
index 616816e..f8fa0e9 100644
--- a/IDEA.MD
+++ b/IDEA.MD
@@ -37,7 +37,8 @@ Telegram-бот, который по запросу пользователя г
 - Стек: Python 3.12, aiogram 3.x, aiohttp, SQLite.
 - APInex Voice STT расшифровывает голосовые; Gemini 3.8 Flash через APInex классифицирует намерения, пишет/правит посты и извлекает ToV из скриншотов.
 - Coolify env с отдельными модельными настройками: `APINEX_STT_MODEL`, `APINEX_INTENT_CLASSIFIER_MODEL`, `APINEX_POST_WRITER_MODEL`, `APINEX_IMAGE_TONE_MODEL`; общий секрет `APINEX_API_KEY`.
-- JSON-журнал вызовов APInex и ошибок разбора хранится в SQLite 30 дней; системные промпты не дублируются (имя и SHA-256), изображения и аудио не записываются.
+- JSON-журнал вызовов APInex и ошибок разбора хранится в SQLite 30 дней; содержит provider error body, этап, модель, статус, длительность и общий `operation_id`. Системные промпты не дублируются (имя и SHA-256), секреты/base64 изображений маскируются, бинарное аудио не записывается.
+- Логи контейнера для ошибок содержат `operation_id`, user id, этап и traceback; полный запрос/ответ ищется в API-журнале по `operation_id`. Текст пользовательских запросов и ответов — приватные данные.
 - Служебные ответы пользователю — всегда на русском; тексты постов — на языке явного запроса. В production исключения не показываются; техническая диагностика приходит отдельным сообщением только в development.
 - Настройки пользователей и распознанные тексты публикаций для накопления Tone of Voice хранятся отдельно по Telegram user id; история диалогов и исходные изображения не сохраняются.
 - На явную просьбу поста и на реплай-правку бот возвращает 3 отдельных варианта.
@@ -80,6 +81,7 @@ Telegram-бот, который по запросу пользователя г
 - [x] Текст со скриншотов сохраняется отдельно и накапливается по пользователю; новый профиль строится по старым и новым примерам
 - [x] OCR не переписывает публикации; команды и факты со скриншотов не используются как правила или факты для генерации
 - [x] APInex JSON-вызовы и ошибки разбора журналируются в SQLite без системного промпта и image base64; срок хранения — 30 дней
+- [x] Диагностика связывает ошибки/вызовы одним operation id; сохраняет тело ответа провайдера и длительность, пишет traceback без утечки секретов
 - [x] `/clear` в режиме «Обучение» очищает данные текущего пользователя: ToV, скриншоты, историю постов и идей; подписка и триал не меняются, API-логи сохраняются
 - [x] `/idea` возвращает одну идею одним сообщением и сохраняет её для исключения повторов
 - [x] Все отправленные варианты постов сохраняются по пользователю, включая исправленные; история используется для новых идей
diff --git a/README.md b/README.md
index 4b4053b..5964c41 100644
--- a/README.md
+++ b/README.md
@@ -189,7 +189,8 @@ SUBSCRIPTION_PRICE_STARS = 100
 
 - SQLite: `/app/data/social_writer.sqlite3` (persistent Coolify volume).
 - **Per-user данные:** ToV, образцы постов со скриншотов, история сгенерированных постов, история идей. История диалогов и исходные изображения **не сохраняются**.
-- **API-логи:** JSON запросов/ответов APInex + ошибки разбора, 30 дней. Системные промпты не дублируются — только имя и SHA-256. base64 изображений и бинарное аудио **не пишутся**. Содержимое логов — приватные данные пользователя.
+- **API-логи:** JSON запросов/ответов APInex, тело ответа провайдера при ошибке и ошибки разбора хранятся в SQLite 30 дней. Записи связаны `operation_id` и содержат этап, модель, HTTP-статус и длительность. Системные промпты не дублируются — только имя и SHA-256; секреты и base64 изображений маскируются, бинарное аудио не пишется. Пользовательские тексты в запросах/ответах — приватные данные.
+- **Логи контейнера:** ошибки операций содержат `operation_id`, Telegram user id, этап и полный traceback; ошибки APInex дополнительно показывают модель, статус, длительность и диагностическую структуру ответа без вывода текста пользовательского запроса. Ищи все связанные записи по одному `operation_id`.
 - `/clear` (только режим «Обучение») удаляет пользовательские данные (ToV, скриншоты, посты, идеи, настройки), не меняя подписку и триал; **API-логи сохраняются**.
 
 ---
diff --git a/VERSION b/VERSION
index f5ec1b7..73de1c7 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.0+31
+0.1.0+32
diff --git a/apinex_client.py b/apinex_client.py
index 1ef1e22..f099e9e 100644
--- a/apinex_client.py
+++ b/apinex_client.py
@@ -1,10 +1,14 @@
 import asyncio
 import base64
+import contextvars
 import hashlib
 import json
 import logging
 import os
 import re
+import time
+import uuid
+from contextlib import contextmanager
 from typing import Any
 
 import aiohttp
@@ -12,6 +16,7 @@ import aiohttp
 from user_store import save_api_call_log
 
 logger = logging.getLogger(__name__)
+_operation_id: contextvars.ContextVar[str | None] = contextvars.ContextVar("operation_id", default=None)
 APINEX_STT_URL = "https://api.apinex.bond/v1/tools/voice/stt"
 APINEX_CHAT_URL = "https://api.apinex.bond/v1/chat/completions"
 USER_AGENT = "Mozilla/5.0 (compatible; SocialPostWriterBot/1.0)"
@@ -90,6 +95,24 @@ def _api_key() -> str:
     return os.getenv("APINEX_API_KEY", "").strip()
 
 
+@contextmanager
+def diagnostic_operation():
+    current_id = _operation_id.get()
+    if current_id:
+        yield current_id
+        return
+    operation_id = uuid.uuid4().hex[:12]
+    token = _operation_id.set(operation_id)
+    try:
+        yield operation_id
+    finally:
+        _operation_id.reset(token)
+
+
+def current_operation_id() -> str | None:
+    return _operation_id.get()
+
+
 def _extract_json(text: str) -> Any:
     raw = text.strip()
     if raw.startswith("```"):
@@ -106,7 +129,10 @@ def _sanitize_log_value(value: Any) -> Any:
     if isinstance(value, dict):
         sanitized = {}
         for key, item in value.items():
-            if key == "url" and isinstance(item, str) and item.startswith("data:"):
+            normalized_key = str(key).casefold()
+            if normalized_key in {"authorization", "api_key", "access_token", "token", "secret", "password"} or normalized_key.endswith(("_api_key", "_access_token", "_secret", "_password")):
+                sanitized[key] = "[REDACTED]"
+            elif key == "url" and isinstance(item, str) and item.startswith("data:"):
                 mime_type, _, encoded = item.partition(",")
                 sanitized[key] = {
                     "redacted_image": True,
@@ -119,6 +145,10 @@ def _sanitize_log_value(value: Any) -> Any:
         return sanitized
     if isinstance(value, list):
         return [_sanitize_log_value(item) for item in value]
+    if isinstance(value, str):
+        value = re.sub(r"(?i)bearer\s+[^\s\"']+", "Bearer [REDACTED]", value)
+        value = re.sub(r"(?i)(api[_-]?key|access[_-]?token|secret|password)(\s*[=:]\s*)[^\s,;\"']+", r"\1\2[REDACTED]", value)
+        value = re.sub(r"(?i)(?:sk-[A-Za-z0-9_-]{12,}|[0-9]{8,}:[A-Za-z0-9_-]{20,})", "[REDACTED]", value)
     return value
 
 
@@ -133,6 +163,7 @@ async def _record_api_call(
     status_code: int | None = None,
     error: str = "",
     user_id: int | None = None,
+    duration_ms: int | None = None,
 ) -> None:
     prompt_hash = hashlib.sha256(system_prompt.encode("utf-8")).hexdigest()
     safe_request = _sanitize_log_value({
@@ -140,7 +171,9 @@ async def _record_api_call(
         **request,
     })
     request_json = json.dumps(safe_request, ensure_ascii=False, separators=(",", ":"))
-    response_json = json.dumps(_sanitize_log_value(response), ensure_ascii=False, separators=(",", ":")) if response is not None else ""
+    safe_response = _sanitize_log_value(response)
+    response_json = json.dumps(safe_response, ensure_ascii=False, separators=(",", ":")) if response is not None else ""
+    safe_error = str(_sanitize_log_value(error))[:2000]
     try:
         await asyncio.to_thread(
             save_api_call_log,
@@ -151,17 +184,56 @@ async def _record_api_call(
             prompt_sha256=prompt_hash,
             user_id=user_id,
             status_code=status_code,
-            error=error,
+            error=safe_error,
+            operation_id=current_operation_id(),
+            duration_ms=duration_ms,
         )
     except Exception as exc:
         logger.warning("API log persistence failed (%s)", type(exc).__name__)
+    if safe_error:
+        if isinstance(safe_response, dict) and "provider_error_body" in safe_response:
+            provider_error_body = safe_response["provider_error_body"]
+            if not isinstance(provider_error_body, str):
+                provider_error_body = json.dumps(provider_error_body, ensure_ascii=False, separators=(",", ":"))
+            response_diagnostic = {"provider_error_body": provider_error_body[:2500]}
+        elif safe_error.endswith("APInex returned an empty model response") and isinstance(safe_response, dict):
+            choices = safe_response.get("choices") or []
+            first_choice = choices[0] if choices and isinstance(choices[0], dict) else {}
+            model_message = first_choice.get("message") if isinstance(first_choice, dict) else {}
+            model_content = model_message.get("content") if isinstance(model_message, dict) else None
+            response_diagnostic = {
+                "top_level_keys": sorted(safe_response.keys()),
+                "choices_count": len(choices),
+                "finish_reason": first_choice.get("finish_reason"),
+                "content_type": type(model_content).__name__,
+                "content_chars": len(model_content) if isinstance(model_content, str) else None,
+                "usage": safe_response.get("usage"),
+            }
+        else:
+            response_diagnostic = {"response_type": type(safe_response).__name__}
+        logger.error(
+            "APInex call failed operation_id=%s stage=%s model=%s status=%s duration_ms=%s error=%s response=%s",
+            current_operation_id() or "-", stage, model or "-", status_code if status_code is not None else "-",
+            duration_ms if duration_ms is not None else "-", safe_error,
+            json.dumps(response_diagnostic, ensure_ascii=False, separators=(",", ":")) if response is not None else "-",
+        )
 
 
 def _status_from_error(exc: Exception) -> int | None:
+    status_code = getattr(exc, "status_code", None)
+    if isinstance(status_code, int):
+        return status_code
     match = re.search("HTTP ([0-9]{3})", str(exc))
     return int(match.group(1)) if match else None
 
 
+class APInexResponseError(RuntimeError):
+    def __init__(self, message: str, status_code: int | None, response_body: str):
+        super().__init__(message)
+        self.status_code = status_code
+        self.response_body = response_body[:20_000]
+
+
 async def _record_processing_error(
     *,
     stage: str,
@@ -198,15 +270,18 @@ async def _post_json(url: str, payload: dict[str, Any]) -> dict[str, Any]:
     }
     async with aiohttp.ClientSession(timeout=timeout) as session:
         async with session.post(url, json=payload, headers=headers) as response:
+            response_text = await response.text()
             if response.status != 200:
                 logger.warning("APInex request returned HTTP %s", response.status)
-                raise RuntimeError(f"APInex request failed with HTTP {response.status}")
+                raise APInexResponseError(
+                    f"APInex request failed with HTTP {response.status}", response.status, response_text
+                )
             try:
-                data = await response.json(content_type=None)
+                data = json.loads(response_text)
             except (aiohttp.ContentTypeError, ValueError) as exc:
-                raise RuntimeError("APInex returned invalid JSON") from exc
+                raise APInexResponseError("APInex returned invalid JSON", response.status, response_text) from exc
     if not isinstance(data, dict):
-        raise RuntimeError("APInex returned an invalid response")
+        raise APInexResponseError("APInex returned an invalid response", 200, response_text)
     return data
 
 
@@ -250,27 +325,41 @@ async def transcribe_audio(audio: bytes, content_type: str, user_id: int | None
         "Accept": "application/json",
         "User-Agent": USER_AGENT,
     }
+    started_at = time.monotonic()
+    payload: Any = None
     try:
         async with aiohttp.ClientSession(timeout=timeout) as session:
             async with session.post(APINEX_STT_URL, params=params, data=audio, headers=headers) as response:
+                response_text = await response.text()
                 if response.status != 200:
                     logger.warning("APInex STT returned HTTP %s", response.status)
-                    raise RuntimeError(f"APInex STT failed with HTTP {response.status}")
+                    raise APInexResponseError(
+                        f"APInex STT failed with HTTP {response.status}", response.status, response_text
+                    )
                 try:
-                    payload = await response.json(content_type=None)
+                    payload = json.loads(response_text)
                 except (aiohttp.ContentTypeError, ValueError) as exc:
-                    raise RuntimeError("APInex STT returned invalid JSON") from exc
+                    raise APInexResponseError("APInex STT returned invalid JSON", response.status, response_text) from exc
         transcript = extract_transcript(payload)
     except Exception as exc:
+        failure_response: Any = payload
+        provider_error_body = getattr(exc, "response_body", "")
+        if failure_response is None and provider_error_body:
+            try:
+                failure_response = {"provider_error_body": json.loads(provider_error_body)}
+            except ValueError:
+                failure_response = {"provider_error_body": provider_error_body}
         await _record_api_call(
             stage="voice_transcription", model=params["model"], prompt_name="voice_stt",
-            system_prompt="", request=request_for_log, status_code=_status_from_error(exc),
+            system_prompt="", request=request_for_log, status_code=_status_from_error(exc), response=failure_response,
             error=f"{type(exc).__name__}: {exc}", user_id=user_id,
+            duration_ms=int((time.monotonic() - started_at) * 1000),
         )
         raise
     await _record_api_call(
         stage="voice_transcription", model=params["model"], prompt_name="voice_stt",
         system_prompt="", request=request_for_log, response=payload, status_code=200, user_id=user_id,
+        duration_ms=int((time.monotonic() - started_at) * 1000),
     )
     return transcript
 
@@ -302,6 +391,8 @@ async def chat_text(
         "temperature": 0.3,
         "max_tokens": 1800,
     }
+    response: dict[str, Any] | None = None
+    started_at = time.monotonic()
     try:
         response = await _post_json(APINEX_CHAT_URL, payload)
         choices = response.get("choices") or []
@@ -313,15 +404,25 @@ async def chat_text(
         if not isinstance(content, str) or not content.strip():
             raise RuntimeError("APInex returned an empty model response")
     except Exception as exc:
+        failure_response: Any = response
+        provider_error_body = getattr(exc, "response_body", "")
+        if failure_response is None and provider_error_body:
+            try:
+                failure_response = {"provider_error_body": json.loads(provider_error_body)}
+            except ValueError:
+                failure_response = {"provider_error_body": provider_error_body}
         await _record_api_call(
             stage=stage, model=model, prompt_name=prompt_name, system_prompt=system_prompt,
-            request=request_for_log, status_code=_status_from_error(exc),
+            request=request_for_log, response=failure_response,
+            status_code=_status_from_error(exc) or (200 if response is not None else None),
             error=f"{type(exc).__name__}: {exc}", user_id=user_id,
+            duration_ms=int((time.monotonic() - started_at) * 1000),
         )
         raise
     await _record_api_call(
         stage=stage, model=model, prompt_name=prompt_name, system_prompt=system_prompt,
         request=request_for_log, response=response, status_code=200, user_id=user_id,
+        duration_ms=int((time.monotonic() - started_at) * 1000),
     )
     return content.strip()
 
diff --git a/bot.py b/bot.py
index ff5f527..88ee8f5 100644
--- a/bot.py
+++ b/bot.py
@@ -28,7 +28,7 @@ from aiogram.types import (
 import payments
 import user_store
 
-from apinex_client import APINEX_STT_URL, POST_HISTORY_CHAR_LIMIT, POST_HISTORY_LIMIT, classify_intent, create_tone_profile, extract_posts_from_images, extract_transcript, generate_ideas, generate_posts, transcribe_audio
+from apinex_client import APINEX_STT_URL, POST_HISTORY_CHAR_LIMIT, POST_HISTORY_LIMIT, classify_intent, create_tone_profile, current_operation_id, diagnostic_operation, extract_posts_from_images, extract_transcript, generate_ideas, generate_posts, transcribe_audio
 from help_message import WELCOME_RICH_HTML, help_plain_view, help_view, rich_to_plain
 from keyboards import MAIN_MENU_VALUE, main_menu_keyboard, mode_keyboard, resolve_button_text
 from payments import send_subscription_invoice
@@ -167,18 +167,29 @@ def split_text(text: str, limit: int = 4000) -> list[str]:
 async def report_error(message: Message, stage: str, exc: Exception) -> None:
     detail = str(exc).strip()
     detail = re.sub(r"(?i)(?:sk-[A-Za-z0-9_-]{12,}|[0-9]{8,}:[A-Za-z0-9_-]{20,})", "[секрет скрыт]", detail)
+    detail = re.sub(r"(?i)bearer\s+[^\s\"']+", "Bearer [секрет скрыт]", detail)
+    detail = re.sub(r"(?i)(api[_-]?key|access[_-]?token|secret|password)(\s*[=:]\s*)[^\s,;\"']+", r"\1\2[секрет скрыт]", detail)
     detail = re.sub(r"https?://\S+", "[внешний сервис]", detail)
     detail = detail or "нет подробностей"
+    operation_id = current_operation_id() or "-"
+    user_id = message.from_user.id if message.from_user else "-"
     try:
         await message.answer(f"❌ Не получилось: {stage}. Попробуй ещё раз позже.")
         if is_development_environment():
             await message.answer(
-                f"🧪 Dev-диагностика: {stage}. Причина: <code>{html.escape(detail[:240])}</code>",
+                f"🧪 Dev-диагностика: {stage}. ID: <code>{operation_id}</code>. "
+                f"Причина: <code>{html.escape(detail[:240])}</code>",
                 parse_mode="HTML",
             )
     except Exception as send_exc:
         logger.error("Unable to report processing error: %s", type(send_exc).__name__)
-    logger.error("User operation failed at %s (%s): %s", stage, type(exc).__name__, detail[:240])
+    safe_exc = RuntimeError(f"{type(exc).__name__}: {detail[:2000]}")
+    safe_exc.__traceback__ = exc.__traceback__
+    logger.error(
+        "User operation failed operation_id=%s user_id=%s stage=%s; traceback follows",
+        operation_id, user_id, stage,
+        exc_info=(RuntimeError, safe_exc, safe_exc.__traceback__),
+    )
 
 
 async def notify_development_deploy(bot: Bot) -> None:
@@ -517,6 +528,16 @@ async def _classify_and_respond(
     text: str,
     show_typing: bool = True,
     state: FSMContext | None = None,
+) -> None:
+    with diagnostic_operation():
+        await _classify_and_respond_inner(message, text, show_typing, state)
+
+
+async def _classify_and_respond_inner(
+    message: Message,
+    text: str,
+    show_typing: bool = True,
+    state: FSMContext | None = None,
 ) -> None:
     if message.from_user is None:
         await message.answer("Не удалось определить пользователя.")
@@ -660,17 +681,18 @@ async def _finish_media_group(key: tuple[int, str]) -> None:
 
 async def _handle_image_message(message: Message, bot: Bot) -> None:
     await notify_development_deploy(bot)
-    try:
-        if message.media_group_id:
-            messages = await _collect_media_group(message, bot)
-            if messages[0].message_id != message.message_id:
-                return
-        else:
-            messages = [message]
-        async with typing_status(bot, message.chat.id):
-            await _process_image_group(messages, bot)
-    except Exception as exc:
-        await report_error(message, "чтение скриншота или обновление ToV", exc)
+    with diagnostic_operation():
+        try:
+            if message.media_group_id:
+                messages = await _collect_media_group(message, bot)
+                if messages[0].message_id != message.message_id:
+                    return
+            else:
+                messages = [message]
+            async with typing_status(bot, message.chat.id):
+                await _process_image_group(messages, bot)
+        except Exception as exc:
+            await report_error(message, "чтение скриншота или обновление ToV", exc)
 
 
 @router.message(F.photo | (F.document & F.document.mime_type.startswith("image/")))
@@ -712,11 +734,12 @@ async def transcribe_voice(message: Message, bot: Bot, state: FSMContext) -> Non
     if not await require_mode(message, state, "generation"):
         return
     await notify_development_deploy(bot)
-    try:
-        async with typing_status(bot, message.chat.id):
-            await _process_voice(message, bot, state)
-    except Exception as exc:
-        await report_error(message, "обработка голосового и генерация", exc)
+    with diagnostic_operation():
+        try:
+            async with typing_status(bot, message.chat.id):
+                await _process_voice(message, bot, state)
+        except Exception as exc:
+            await report_error(message, "обработка голосового и генерация", exc)
 
 
 @router.message(F.text & F.text.startswith("/"))
diff --git a/tests/test_release_help.py b/tests/test_release_help.py
index 9d5dcc8..f9778b6 100644
--- a/tests/test_release_help.py
+++ b/tests/test_release_help.py
@@ -59,6 +59,18 @@ class DeployNoticeTests(unittest.IsolatedAsyncioTestCase):
 
 
 class UserFacingErrorTests(unittest.IsolatedAsyncioTestCase):
+    async def test_failure_log_has_traceback_and_operation_id(self):
+        message = AsyncMock()
+        with bot.diagnostic_operation() as operation_id:
+            with self.assertLogs(bot.logger, level="ERROR") as captured:
+                try:
+                    raise ValueError("provider failure")
+                except ValueError as exc:
+                    await bot.report_error(message, "генерация поста", exc)
+        self.assertIn(f"operation_id={operation_id}", "\n".join(captured.output))
+        self.assertIn("Traceback (most recent call last)", "\n".join(captured.output))
+        self.assertIn("provider failure", "\n".join(captured.output))
+
     async def test_production_error_is_generic_without_exception_details(self):
         message = AsyncMock()
         with patch.object(bot, "DEPLOY_ENV", "production"):
diff --git a/tests/test_voice_stt.py b/tests/test_voice_stt.py
index aef426b..9972dfd 100644
--- a/tests/test_voice_stt.py
+++ b/tests/test_voice_stt.py
@@ -1,3 +1,4 @@
+import json
 import unittest
 from unittest.mock import patch
 
@@ -20,6 +21,9 @@ class FakeResponse:
     async def json(self, content_type=None):
         return self.payload
 
+    async def text(self):
+        return json.dumps(self.payload)
+
 
 class FakeClientSession:
     def __init__(self, response, **kwargs):
diff --git a/tests/test_writer_features.py b/tests/test_writer_features.py
index 7649fb8..9d1bb00 100644
--- a/tests/test_writer_features.py
+++ b/tests/test_writer_features.py
@@ -42,7 +42,9 @@ class FakeResponse:
     async def text(self):
         if isinstance(self.payload, bytes):
             return self.payload.decode("utf-8", errors="replace")
-        return str(self.payload)
+        if isinstance(self.payload, str):
+            return self.payload
+        return json.dumps(self.payload)
 
 
 
@@ -171,13 +173,14 @@ class ApinexTests(unittest.IsolatedAsyncioTestCase):
         self.assertEqual(detail["stage"], "screenshot_ocr")
 
     async def test_chat_api_failure_is_logged(self):
-        fake_session = FakeClientSession(FakeResponse(401, {}))
-        with patch.object(apinex_client.aiohttp, "ClientSession", return_value=fake_session):
-            with self.assertRaisesRegex(RuntimeError, "HTTP 401"):
-                await apinex_client.chat_text(
-                    "APINEX_POST_WRITER_MODEL", "private system prompt", "request",
-                    stage="post_generation", user_id=45, prompt_name="post_writer",
-                )
+        fake_session = FakeClientSession(FakeResponse(401, {"error": {"message": "invalid key"}}))
+        with self.assertLogs(apinex_client.logger, level="ERROR") as captured:
+            with patch.object(apinex_client.aiohttp, "ClientSession", return_value=fake_session):
+                with self.assertRaisesRegex(RuntimeError, "HTTP 401"):
+                    await apinex_client.chat_text(
+                        "APINEX_POST_WRITER_MODEL", "private system prompt", "request",
+                        stage="post_generation", user_id=45, prompt_name="post_writer",
+                    )
         logs = user_store.list_api_call_logs(limit=1, user_id=45)
         detail = user_store.get_api_call_log(logs[0]["id"] if isinstance(logs[0]["id"], int) else -1)
         self.assertIsNotNone(detail)
@@ -185,6 +188,50 @@ class ApinexTests(unittest.IsolatedAsyncioTestCase):
         self.assertEqual(detail["status_code"], 401)
         self.assertNotIn("private system prompt", str(detail["request_json"]))
         self.assertEqual(json.loads(str(detail["request_json"]))["prompt"]["name"], "post_writer")
+        self.assertEqual(
+            json.loads(str(detail["response_json"])),
+            {"provider_error_body": {"error": {"message": "invalid key"}}},
+        )
+        self.assertIsInstance(detail["duration_ms"], int)
+        self.assertIn('"provider_error_body"', "\n".join(captured.output))
+
+    async def test_empty_model_response_logs_raw_response_and_operation_id(self):
+        response = {"choices": [{"message": {"content": ""}, "finish_reason": "stop"}]}
+        fake_session = FakeClientSession(FakeResponse(200, response))
+        with (
+            patch.object(apinex_client.aiohttp, "ClientSession", return_value=fake_session),
+            apinex_client.diagnostic_operation() as operation_id,
+        ):
+            with self.assertRaisesRegex(RuntimeError, "empty model response"):
+                await apinex_client.chat_text(
+                    "APINEX_POST_WRITER_MODEL", "system", "request", stage="intent_classification", user_id=46
+                )
+        logs = user_store.list_api_call_logs(limit=1, user_id=46)
+        detail = user_store.get_api_call_log(logs[0]["id"] if isinstance(logs[0]["id"], int) else -1)
+        self.assertIsNotNone(detail)
+        assert detail is not None
+        self.assertEqual(detail["operation_id"], operation_id)
+        self.assertEqual(json.loads(str(detail["response_json"])), response)
+        self.assertEqual(detail["status_code"], 200)
+        self.assertIsInstance(detail["duration_ms"], int)
+
+    async def test_api_log_redacts_secrets_but_keeps_token_limits(self):
+        await apinex_client._record_api_call(
+            stage="test", model="model", prompt_name="test", system_prompt="",
+            request={"max_tokens": 1800, "api_key": "private-key"},
+            response={"authorization": "Bearer private-token", "detail": "Bearer private-token"},
+        )
+        log = user_store.list_api_call_logs(limit=1)[0]
+        log_id = log["id"]
+        self.assertIsInstance(log_id, int)
+        detail = user_store.get_api_call_log(log_id if isinstance(log_id, int) else -1)
+        assert detail is not None
+        request = json.loads(str(detail["request_json"]))
+        response = json.loads(str(detail["response_json"]))
+        self.assertEqual(request["max_tokens"], 1800)
+        self.assertEqual(request["api_key"], "[REDACTED]")
+        self.assertEqual(response["authorization"], "[REDACTED]")
+        self.assertEqual(response["detail"], "Bearer [REDACTED]")
 
     async def test_writer_preserves_multiline_post_without_labels(self):
         multiline_post = "Привет!\n\nВот новость ☕"
@@ -371,6 +418,28 @@ class ScreenshotToneWorkflowTests(unittest.IsolatedAsyncioTestCase):
 
 
 class StorageTests(unittest.TestCase):
+    def test_api_log_schema_migrates_existing_database(self):
+        import sqlite3
+        import tempfile
+        from pathlib import Path
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            db = str(Path(temp_dir) / "old.sqlite3")
+            with sqlite3.connect(db) as connection:
+                connection.execute(
+                    """CREATE TABLE api_call_logs (
+                        id INTEGER PRIMARY KEY AUTOINCREMENT, telegram_user_id INTEGER, stage TEXT NOT NULL,
+                        model TEXT NOT NULL DEFAULT '', prompt_sha256 TEXT NOT NULL DEFAULT '', request_json TEXT NOT NULL,
+                        response_json TEXT NOT NULL DEFAULT '', status_code INTEGER, error TEXT NOT NULL DEFAULT '',
+                        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+                    )"""
+                )
+            user_store.init_db(db)
+            with sqlite3.connect(db) as connection:
+                columns = {row[1] for row in connection.execute("PRAGMA table_info(api_call_logs)")}
+            self.assertIn("operation_id", columns)
+            self.assertIn("duration_ms", columns)
+
     def test_user_tone_isolated_per_id(self):
         import tempfile
         from pathlib import Path
@@ -400,11 +469,15 @@ class StorageTests(unittest.TestCase):
                 user_id=12,
                 status_code=502,
                 error="HTTP 502",
+                operation_id="op-123",
+                duration_ms=250,
                 db_path=db,
             )
             summary = user_store.list_api_call_logs(limit=5, user_id=12, db_path=db)
             self.assertEqual(summary[0]["id"], log_id)
             self.assertNotIn("request_json", summary[0])
+            self.assertEqual(summary[0]["operation_id"], "op-123")
+            self.assertEqual(summary[0]["duration_ms"], 250)
             detail = user_store.get_api_call_log(log_id, db)
             self.assertIsNotNone(detail)
             assert detail is not None
diff --git a/user_store.py b/user_store.py
index 41479f2..5a53468 100644
--- a/user_store.py
+++ b/user_store.py
@@ -83,6 +83,13 @@ def init_db(db_path: str | None = None) -> None:
             )
             """
         )
+        api_log_columns = {
+            row["name"] for row in connection.execute("PRAGMA table_info(api_call_logs)").fetchall()
+        }
+        if "operation_id" not in api_log_columns:
+            connection.execute("ALTER TABLE api_call_logs ADD COLUMN operation_id TEXT NOT NULL DEFAULT ''")
+        if "duration_ms" not in api_log_columns:
+            connection.execute("ALTER TABLE api_call_logs ADD COLUMN duration_ms INTEGER")
         connection.execute(
             "CREATE INDEX IF NOT EXISTS idx_api_call_logs_created_at ON api_call_logs(created_at)"
         )
@@ -237,6 +244,8 @@ def save_api_call_log(
     user_id: int | None = None,
     status_code: int | None = None,
     error: str = "",
+    operation_id: str | None = None,
+    duration_ms: int | None = None,
     db_path: str | None = None,
 ) -> int:
     request_json = _bounded_json(request_json)
@@ -246,11 +255,11 @@ def save_api_call_log(
             """
             INSERT INTO api_call_logs (
                 telegram_user_id, stage, model, prompt_sha256, request_json,
-                response_json, status_code, error
-            ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+                response_json, status_code, error, operation_id, duration_ms
+            ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
             """,
             (user_id, stage[:100], model[:200], prompt_sha256[:64], request_json,
-             response_json, status_code, error[:2000]),
+             response_json, status_code, error[:2000], (operation_id or "")[:32], duration_ms),
         )
         connection.execute(
             "DELETE FROM api_call_logs WHERE created_at < datetime('now', ?)",
@@ -268,13 +277,13 @@ def list_api_call_logs(
     with closing(connect(db_path)) as connection:
         if user_id is None:
             rows = connection.execute(
-                "SELECT id, telegram_user_id, stage, model, prompt_sha256, status_code, error, created_at, "
+                "SELECT id, telegram_user_id, stage, model, prompt_sha256, status_code, error, operation_id, duration_ms, created_at, "
                 "length(request_json) AS request_chars, length(response_json) AS response_chars "
                 "FROM api_call_logs ORDER BY id DESC LIMIT ?", (limit,),
             ).fetchall()
         else:
             rows = connection.execute(
-                "SELECT id, telegram_user_id, stage, model, prompt_sha256, status_code, error, created_at, "
+                "SELECT id, telegram_user_id, stage, model, prompt_sha256, status_code, error, operation_id, duration_ms, created_at, "
                 "length(request_json) AS request_chars, length(response_json) AS response_chars "
                 "FROM api_call_logs WHERE telegram_user_id = ? ORDER BY id DESC LIMIT ?", (user_id, limit),
             ).fetchall()