diff --git a/services/api/app/core/oauth.py b/services/api/app/core/oauth.py
index bfd5c92..4ff8237 100644
--- a/services/api/app/core/oauth.py
+++ b/services/api/app/core/oauth.py
@@ -20,6 +20,18 @@ class OAuthNotConfigured(Exception):
     """Провайдер не настроен (пустой client_id/secret в конфиге)."""
 
 
+def _raise_for_status_verbose(resp: httpx.Response) -> None:
+    """Как raise_for_status(), но с телом ответа в сообщении — у Google/Яндекс
+    там error/error_description с точной причиной (invalid_client и т.п.),
+    без этого в логе только код статуса, причина не видна."""
+    try:
+        resp.raise_for_status()
+    except httpx.HTTPStatusError as e:
+        raise httpx.HTTPStatusError(
+            f"{e}: {resp.text[:500]}", request=e.request, response=e.response
+        ) from e
+
+
 @dataclass
 class OAuthUserInfo:
     provider_id: str
@@ -86,14 +98,14 @@ async def exchange_code(provider: str, code: str) -> OAuthUserInfo:
                     "grant_type": "authorization_code",
                 },
             )
-            token_resp.raise_for_status()
+            _raise_for_status_verbose(token_resp)
             access_token = token_resp.json()["access_token"]
 
             info_resp = await client.get(
                 "https://www.googleapis.com/oauth2/v3/userinfo",
                 headers={"Authorization": f"Bearer {access_token}"},
             )
-            info_resp.raise_for_status()
+            _raise_for_status_verbose(info_resp)
             info = info_resp.json()
             email = info["email"]
             return OAuthUserInfo(
@@ -113,7 +125,7 @@ async def exchange_code(provider: str, code: str) -> OAuthUserInfo:
                 "client_secret": client_secret,
             },
         )
-        token_resp.raise_for_status()
+        _raise_for_status_verbose(token_resp)
         access_token = token_resp.json()["access_token"]
 
         info_resp = await client.get(
@@ -121,7 +133,7 @@ async def exchange_code(provider: str, code: str) -> OAuthUserInfo:
             params={"format": "json"},
             headers={"Authorization": f"OAuth {access_token}"},
         )
-        info_resp.raise_for_status()
+        _raise_for_status_verbose(info_resp)
         info = info_resp.json()
 
         email = info.get("default_email") or next(iter(info.get("emails") or []), None)