diff --git a/macos/swift-bar/system-mute.30s.rb b/macos/swift-bar/system-mute.30s.rb
new file mode 100755
index 0000000..fadcafa
--- /dev/null
+++ b/macos/swift-bar/system-mute.30s.rb
@@ -0,0 +1,26 @@
+#!/usr/bin/env ruby
+
+# <swiftbar.hideAbout>true</swiftbar.hideAbout>
+# <swiftbar.hideRunInTerminal>true</swiftbar.hideRunInTerminal>
+# <swiftbar.hideLastUpdated>true</swiftbar.hideLastUpdated>
+# <swiftbar.hideDisablePlugin>true</swiftbar.hideDisablePlugin>
+
+require "json"
+
+muted = `osascript -e "input volume of (get volume settings)"`.to_i.zero?
+
+unless ARGV.empty?
+  vol = ARGV.shift
+  `osascript -e "set volume input volume #{vol}"`
+  name = File.basename(__FILE__).split(?.)[0..-3].join(?.)
+  `open swiftbar://refreshplugin?name=#{name}`
+end
+
+icon = [:mic, muted ? :slash : nil, :fill].compact.join(?.)
+params = {
+  symbolize: true,
+  bash: __FILE__,
+  param0: muted ? 75 : 0,
+  terminal: false,
+}
+puts ":#{icon}: | #{params.map {|k,v| "#{k}=#{v}"}.join(" ")}"