diff --git a/interface/generate-grant-execute.rb b/interface/generate-grant-execute.rb
new file mode 100644
index 0000000..3f7f8bf
--- /dev/null
+++ b/interface/generate-grant-execute.rb
@@ -0,0 +1,32 @@
+#!/usr/bin/env ruby
+
+# A script to automatically generate SQL files from an interface definition.
+
+require 'csv'
+require 'erb'
+
+GEOCODER_CLIENT_SCHEMA = 'cdb_geocoder_client'
+INTERFACE_SOURCE_FILE = 'interface.csv'
+
+class GrantExecute
+  TEMPLATE=<<-END
+GRANT EXECUTE ON FUNCTION <%= GEOCODER_CLIENT_SCHEMA %>.<%= function_signature['function_name'] %>(<%= function_signature['argument_data_types'] %>) TO publicuser;
+END
+
+  attr_reader :function_signature
+
+  def initialize(function_signature)
+    @function_signature = function_signature
+  end
+
+  def render
+    ERB.new(TEMPLATE).result(binding)
+  end  
+end
+
+
+
+CSV.foreach(INTERFACE_SOURCE_FILE, {headers: true}) do |function_signature|
+  grant = GrantExecute.new(function_signature).render
+  puts grant
+end