diff --git a/toolkit/server/extargs/http.go b/toolkit/server/extargs/http.go
index cb33498..743ec0d 100644
--- a/toolkit/server/extargs/http.go
+++ b/toolkit/server/extargs/http.go
@@ -1,3 +1,4 @@
+// Package extargs adds external arguments to the invocation's arguments before the policy is evaluated.
 package extargs
 
 import (