diff --git a/hack/whatApi.sh b/hack/whatApi.sh
index eb035d3a6..d81e06f70 100755
--- a/hack/whatApi.sh
+++ b/hack/whatApi.sh
@@ -6,14 +6,21 @@
 
 function whatApi {
   echo "==== begin $1 =================================="
-  find $1 -name "*.go" |\
+    find $1 -name "*.go" |\
     xargs grep \"sigs.k8s.io/kustomize/api/ |\
     sed 's|:\s"|: dummy "|'   |\
     sed 's|:\s\w\+\s"|  |'    |\
     sed 's|"$||'              |\
     awk '{ printf "%60s  %s\n", $2, $1 }' |\
     sed 's|sigs.k8s.io/kustomize/api/||' |\
-    sort | uniq
+    sort |\
+    uniq |\
+    grep -v " filesys " |\
+    grep -v " resource " |\
+    grep -v " resid " |\
+    grep -v " resmap " |\
+    grep -v " testutils/" |\
+    grep -v "types "
   echo "==== end $1 =================================="
 }