diff --git a/pkg/arvo/gen/gall-nonces.hoon b/pkg/arvo/gen/gall-nonces.hoon
new file mode 100644
index 0000000000..d0bdd1ee91
--- /dev/null
+++ b/pkg/arvo/gen/gall-nonces.hoon
@@ -0,0 +1,10 @@
+::  +gall-nonces: print %gall agent subscription nonces, highest-last
+::
+:-  %say
+|=  [[now=@da eny=@uvJ bec=beak] ~ ~]
+:-  %noun
+^-  (list [dude:gall @ud])
+%+  sort
+  %~  tap  by
+  .^((map dude:gall @ud) %gf /(scot %p p.bec)//(scot %da now))
+|=([[* a=@ud] [* b=@ud]] (lth a b))