diff --git a/.env.example b/.env.example
index 6d150409..2b08b790 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,4 @@
 AGENT_NAME=mini-agi
 REPORT_LOCATION="reports/mini-agi"
 OPENAI_API_KEY="sk-" # for LLM eval
+BUILD_SKILL_TREE=false # set to true to build the skill tree.