diff --git a/core b/core
new file mode 100644
index 0000000..910b61a
Binary files /dev/null and b/core differ
diff --git a/src/util.jl b/src/util.jl
index 6124405..1e6835c 100644
--- a/src/util.jl
+++ b/src/util.jl
@@ -43,13 +43,13 @@ julia> YiemAgent.addNewMessage(a, "user", "hello")
 julia> YiemAgent.clearhistory(a)
 ```
 
+# TODO
+  - [PENDING] clear memory
+
 # Signature
 """
 function clearhistory(a::T)  where {T<:agent}
   empty!(a.chathistory)
-  empty!(a.mctstree)
-  empty!(a.plan[:activeplan])
-  empty!(a.plan[:currenttrajectory])
 end