diff --git a/config.py b/config.py
index 4b234d0..0d00585 100644
--- a/config.py
+++ b/config.py
@@ -206,6 +206,10 @@ GRIST_URL = os.getenv('GRIST_URL', '')  # Grist 資料協作連結
 HERMES_URL = os.getenv('HERMES_URL', 'http://192.168.0.111:11434')
 HERMES_TIMEOUT = int(os.getenv('HERMES_TIMEOUT', '120'))  # 秒；批量 300 筆預估 ~90s
 
+# Embedding 服務（ADR-003 對齊：embedding 走 Hermes 主機，內網免認證）
+# 預設 fallback 到 HERMES_URL；若需獨立 embedding 主機可透過 env 覆寫
+EMBEDDING_HOST = os.getenv('EMBEDDING_HOST', HERMES_URL)
+
 # SSH Jump Configuration (AIOps AutoHeal)
 SSH_JUMP_HOST = os.getenv('SSH_JUMP_HOST', '192.168.0.110')
 SSH_JUMP_USER = os.getenv('SSH_JUMP_USER', 'wooo')