diff --git a/pipeline_service/capability_tools.py b/pipeline_service/capability_tools.py
index b7d72f1..68b0ef5 100644
--- a/pipeline_service/capability_tools.py
+++ b/pipeline_service/capability_tools.py
@@ -311,8 +311,12 @@ async def exec_capability_tool(tool_name, params, ctx):
                 return "(空)"
             lines = []
             for item in result[:50]:
-                if hasattr(item, "keys"):
-                    lines.append(str({k: getattr(item, k, "") for k in item.keys()}))
+                # dict 的键必须 item[k] 取（getattr(dict, k) 永远落默认值 →
+                # 2026-08-31 测试机实测：list_features 返回全空值，QC 功能落库核对失效）。
+                if isinstance(item, dict):
+                    lines.append(str(item))
+                elif hasattr(item, "keys"):
+                    lines.append(str({k: item[k] for k in item.keys()}))
                 else:
                     lines.append(str(item))
             return "\n".join(lines)