diff --git a/metagpt/const.py b/metagpt/const.py
index fbc2c928a..e9fa118d7 100644
--- a/metagpt/const.py
+++ b/metagpt/const.py
@@ -57,3 +57,6 @@ METAGPT_API_VERSION = "METAGPT_API_VERSION"
 
 # format
 BASE64_FORMAT = "base64"
+
+# REDIS
+REDIS_KEY = "REDIS_KEY"