diff --git a/apps/worker/worker_app/tasks/vision/vlm_fast_json.py b/apps/worker/worker_app/tasks/vision/vlm_fast_json.py
index c68cf739a..036ec8285 100644
--- a/apps/worker/worker_app/tasks/vision/vlm_fast_json.py
+++ b/apps/worker/worker_app/tasks/vision/vlm_fast_json.py
@@ -88,8 +88,10 @@ def call_fast_json(
     """
     t0 = time.time()
     import httpx
+
     try:
         from packages.shared import get_shared_settings
+
         settings = get_shared_settings()
         api_key = settings.doubao_api_key
         base_url = (settings.doubao_base_url or "https://ark.cn-beijing.volces.com/api/v3").rstrip("/")
@@ -103,10 +105,13 @@ def call_fast_json(
             "model": use_model,
             "messages": [
                 {"role": "system", "content": _FAST_SYSTEM},
-                {"role": "user", "content": [
-                    {"type": "image_url", "image_url": {"url": img_url}},
-                    {"type": "text", "text": _FAST_USER},
-                ]},
+                {
+                    "role": "user",
+                    "content": [
+                        {"type": "image_url", "image_url": {"url": img_url}},
+                        {"type": "text", "text": _FAST_USER},
+                    ],
+                },
             ],
             "temperature": 0.1,
             "max_tokens": max_tokens,
@@ -129,15 +134,19 @@ def call_fast_json(
         )
         elapsed = time.time() - t0
         if resp.status_code != 200:
-            logger.warning("[vision.v2] fast_json HTTP %d elapsed=%.1fs body=%s", resp.status_code, elapsed, resp.text[:200])
+            logger.warning(
+                "[vision.v2] fast_json HTTP %d elapsed=%.1fs body=%s", resp.status_code, elapsed, resp.text[:200]
+            )
             # 如果400说明不支持thinking参数，降级重试一次
             if resp.status_code == 400 and "thinking" in resp.text.lower():
                 payload.pop("thinking", None)
                 payload.pop("reasoning_effort", None)
-                t1 = time.time()
-                resp = httpx.post(url,
+                time.time()
+                resp = httpx.post(
+                    url,
                     headers={"Authorization": f"Bearer {api_key}", "Content-Type": "application/json"},
-                    json=payload, timeout=timeout,
+                    json=payload,
+                    timeout=timeout,
                 )
                 elapsed = time.time() - t0
                 if resp.status_code != 200:
@@ -151,9 +160,14 @@ def call_fast_json(
             logger.warning("[vision.v2] fast_json 返回 None elapsed=%.1fs", elapsed)
             return None
         usage = data.get("usage") or {}
-        logger.info("[vision.v2] fast_json 直连完成 model=%s elapsed=%.1fs in=%d out=%d reasoning=%d",
-            use_model, elapsed, usage.get("prompt_tokens",0), usage.get("completion_tokens",0),
-            usage.get("reasoning_tokens",0))
+        logger.info(
+            "[vision.v2] fast_json 直连完成 model=%s elapsed=%.1fs in=%d out=%d reasoning=%d",
+            use_model,
+            elapsed,
+            usage.get("prompt_tokens", 0),
+            usage.get("completion_tokens", 0),
+            usage.get("reasoning_tokens", 0),
+        )
         elapsed = time.time() - t0
         if raw is None:
             logger.warning("[vision.v2] fast_json 返回 None elapsed=%.1fs model=%s", elapsed, use_model)