diff --git a/codegen/projections/high_score_service/lib/high_score_service/config.rb b/codegen/projections/high_score_service/lib/high_score_service/config.rb
index 4c28939a9..679f09037 100644
--- a/codegen/projections/high_score_service/lib/high_score_service/config.rb
+++ b/codegen/projections/high_score_service/lib/high_score_service/config.rb
@@ -91,16 +91,16 @@ module HighScoreService
     private
 
     def validate!
-      Hearth::Validator.validate_type!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
-      Hearth::Validator.validate_type!(endpoint, String, context: 'config[:endpoint]')
-      Hearth::Validator.validate_type!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
-      Hearth::Validator.validate_type!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
-      Hearth::Validator.validate_type!(log_level, Symbol, context: 'config[:log_level]')
-      Hearth::Validator.validate_type!(logger, Logger, context: 'config[:logger]')
-      Hearth::Validator.validate_type!(plugins, Hearth::PluginList, context: 'config[:plugins]')
-      Hearth::Validator.validate_type!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
-      Hearth::Validator.validate_type!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
-      Hearth::Validator.validate_type!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
+      Hearth::Validator.validate_types!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
+      Hearth::Validator.validate_types!(endpoint, String, context: 'config[:endpoint]')
+      Hearth::Validator.validate_types!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
+      Hearth::Validator.validate_types!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
+      Hearth::Validator.validate_types!(log_level, Symbol, context: 'config[:log_level]')
+      Hearth::Validator.validate_types!(logger, Logger, context: 'config[:logger]')
+      Hearth::Validator.validate_types!(plugins, Hearth::PluginList, context: 'config[:plugins]')
+      Hearth::Validator.validate_types!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
+      Hearth::Validator.validate_types!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
+      Hearth::Validator.validate_types!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
     end
 
     def self.defaults
diff --git a/codegen/projections/rails_json/lib/rails_json/config.rb b/codegen/projections/rails_json/lib/rails_json/config.rb
index 94a2072ea..70ce3a1ad 100644
--- a/codegen/projections/rails_json/lib/rails_json/config.rb
+++ b/codegen/projections/rails_json/lib/rails_json/config.rb
@@ -91,16 +91,16 @@ module RailsJson
     private
 
     def validate!
-      Hearth::Validator.validate_type!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
-      Hearth::Validator.validate_type!(endpoint, String, context: 'config[:endpoint]')
-      Hearth::Validator.validate_type!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
-      Hearth::Validator.validate_type!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
-      Hearth::Validator.validate_type!(log_level, Symbol, context: 'config[:log_level]')
-      Hearth::Validator.validate_type!(logger, Logger, context: 'config[:logger]')
-      Hearth::Validator.validate_type!(plugins, Hearth::PluginList, context: 'config[:plugins]')
-      Hearth::Validator.validate_type!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
-      Hearth::Validator.validate_type!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
-      Hearth::Validator.validate_type!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
+      Hearth::Validator.validate_types!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
+      Hearth::Validator.validate_types!(endpoint, String, context: 'config[:endpoint]')
+      Hearth::Validator.validate_types!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
+      Hearth::Validator.validate_types!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
+      Hearth::Validator.validate_types!(log_level, Symbol, context: 'config[:log_level]')
+      Hearth::Validator.validate_types!(logger, Logger, context: 'config[:logger]')
+      Hearth::Validator.validate_types!(plugins, Hearth::PluginList, context: 'config[:plugins]')
+      Hearth::Validator.validate_types!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
+      Hearth::Validator.validate_types!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
+      Hearth::Validator.validate_types!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
     end
 
     def self.defaults
diff --git a/codegen/projections/weather/lib/weather/config.rb b/codegen/projections/weather/lib/weather/config.rb
index 00d0158a9..c03441e6e 100644
--- a/codegen/projections/weather/lib/weather/config.rb
+++ b/codegen/projections/weather/lib/weather/config.rb
@@ -91,16 +91,16 @@ module Weather
     private
 
     def validate!
-      Hearth::Validator.validate_type!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
-      Hearth::Validator.validate_type!(endpoint, String, context: 'config[:endpoint]')
-      Hearth::Validator.validate_type!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
-      Hearth::Validator.validate_type!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
-      Hearth::Validator.validate_type!(log_level, Symbol, context: 'config[:log_level]')
-      Hearth::Validator.validate_type!(logger, Logger, context: 'config[:logger]')
-      Hearth::Validator.validate_type!(plugins, Hearth::PluginList, context: 'config[:plugins]')
-      Hearth::Validator.validate_type!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
-      Hearth::Validator.validate_type!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
-      Hearth::Validator.validate_type!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
+      Hearth::Validator.validate_types!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
+      Hearth::Validator.validate_types!(endpoint, String, context: 'config[:endpoint]')
+      Hearth::Validator.validate_types!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
+      Hearth::Validator.validate_types!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
+      Hearth::Validator.validate_types!(log_level, Symbol, context: 'config[:log_level]')
+      Hearth::Validator.validate_types!(logger, Logger, context: 'config[:logger]')
+      Hearth::Validator.validate_types!(plugins, Hearth::PluginList, context: 'config[:plugins]')
+      Hearth::Validator.validate_types!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
+      Hearth::Validator.validate_types!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
+      Hearth::Validator.validate_types!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
     end
 
     def self.defaults
diff --git a/codegen/projections/white_label/lib/white_label/config.rb b/codegen/projections/white_label/lib/white_label/config.rb
index 8dcc88c79..bba64ae88 100644
--- a/codegen/projections/white_label/lib/white_label/config.rb
+++ b/codegen/projections/white_label/lib/white_label/config.rb
@@ -113,20 +113,20 @@ module WhiteLabel
     private
 
     def validate!
-      Hearth::Validator.validate_type!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
-      Hearth::Validator.validate_type!(disable_request_compression, TrueClass, FalseClass, context: 'config[:disable_request_compression]')
-      Hearth::Validator.validate_type!(endpoint, String, context: 'config[:endpoint]')
-      Hearth::Validator.validate_type!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
-      Hearth::Validator.validate_type!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
-      Hearth::Validator.validate_type!(log_level, Symbol, context: 'config[:log_level]')
-      Hearth::Validator.validate_type!(logger, Logger, context: 'config[:logger]')
-      Hearth::Validator.validate_type!(plugins, Hearth::PluginList, context: 'config[:plugins]')
-      Hearth::Validator.validate_type!(request_min_compression_size_bytes, Integer, context: 'config[:request_min_compression_size_bytes]')
+      Hearth::Validator.validate_types!(disable_host_prefix, TrueClass, FalseClass, context: 'config[:disable_host_prefix]')
+      Hearth::Validator.validate_types!(disable_request_compression, TrueClass, FalseClass, context: 'config[:disable_request_compression]')
+      Hearth::Validator.validate_types!(endpoint, String, context: 'config[:endpoint]')
+      Hearth::Validator.validate_types!(http_client, Hearth::HTTP::Client, context: 'config[:http_client]')
+      Hearth::Validator.validate_types!(interceptors, Hearth::InterceptorList, context: 'config[:interceptors]')
+      Hearth::Validator.validate_types!(log_level, Symbol, context: 'config[:log_level]')
+      Hearth::Validator.validate_types!(logger, Logger, context: 'config[:logger]')
+      Hearth::Validator.validate_types!(plugins, Hearth::PluginList, context: 'config[:plugins]')
+      Hearth::Validator.validate_types!(request_min_compression_size_bytes, Integer, context: 'config[:request_min_compression_size_bytes]')
       Hearth::Validator.validate_range!(request_min_compression_size_bytes, min: 0, max: 10485760, context: 'config[:request_min_compression_size_bytes]')
-      Hearth::Validator.validate_type!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
-      Hearth::Validator.validate_type!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
-      Hearth::Validator.validate_type!(test_config, String, context: 'config[:test_config]')
-      Hearth::Validator.validate_type!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
+      Hearth::Validator.validate_types!(retry_strategy, Hearth::Retry::Strategy, context: 'config[:retry_strategy]')
+      Hearth::Validator.validate_types!(stub_responses, TrueClass, FalseClass, context: 'config[:stub_responses]')
+      Hearth::Validator.validate_types!(test_config, String, context: 'config[:test_config]')
+      Hearth::Validator.validate_types!(validate_input, TrueClass, FalseClass, context: 'config[:validate_input]')
     end
 
     def self.defaults