diff --git a/plugin/pending.lua b/plugin/pending.lua
index d246fba..e456f09 100644
--- a/plugin/pending.lua
+++ b/plugin/pending.lua
@@ -213,6 +213,21 @@ end, {
     if cmd_line:match('^Pending%s+edit') then
       return complete_edit(arg_lead, cmd_line)
     end
+    if cmd_line:match('^Pending%s+auth') then
+      local after_auth = cmd_line:match('^Pending%s+auth%s+(.*)') or ''
+      local parts = {}
+      for w in after_auth:gmatch('%S+') do
+        table.insert(parts, w)
+      end
+      local trailing = after_auth:match('%s$')
+      if #parts == 0 or (#parts == 1 and not trailing) then
+        return filter_candidates(arg_lead, { 'gcal', 'gtasks', 'clear', 'reset' })
+      end
+      if #parts == 1 or (#parts == 2 and not trailing) then
+        return filter_candidates(arg_lead, { 'clear', 'reset' })
+      end
+      return {}
+    end
     local backend_set = pending.sync_backend_set()
     local matched_backend = cmd_line:match('^Pending%s+(%S+)')
     if matched_backend and backend_set[matched_backend] then