diff --git a/pipeline_platform/platform_ability.py b/pipeline_platform/platform_ability.py
index b5d8ba9..34e3c71 100644
--- a/pipeline_platform/platform_ability.py
+++ b/pipeline_platform/platform_ability.py
@@ -255,10 +255,13 @@ async def _h_extract_llm_api_spec(sor, params, ctx):
         return "文档文本太短（<100字符），无法提取配置——先用 fetch_model_doc 抓取"
     try:
         from pipeline_service.llm_bridge import llm_call_msgs
+        # purpose='utility'：辅助任务走辅助模型链（机构策略配置则优先，便宜快）
+        # timeout=300：长文档提取慢，端点默认 60 秒实测跑不完（2026-09-04 根因）
         raw = await llm_call_msgs(
             [{"role": "system", "content": _EXTRACT_PROMPT},
              {"role": "user", "content": doc_text[:48000]}],
-            temperature=0.1, org_id="0", user_id=ctx.get("user_id", ""))
+            temperature=0.1, org_id="0", user_id=ctx.get("user_id", ""),
+            purpose="utility", timeout=300)
     except Exception as e:
         return "LLM 提取失败：%s" % str(e)[:200]
     txt = (raw or "").strip()