diff --git a/lib/public/repositories/base.rb b/lib/public/repositories/base.rb
index 3afbb75..182e0fb 100644
--- a/lib/public/repositories/base.rb
+++ b/lib/public/repositories/base.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: true
+# frozen_string_literal: strict
 # typed: false
 
 require_relative '../../runtime_generic'
@@ -17,7 +17,7 @@ module Base
 
       abstract!
 
-      Entity = type_member
+      Entity = type_member(:out)
 
       sig { returns(T.untyped) }
       def self.entity
diff --git a/lib/public/serializer.rb b/lib/public/serializer.rb
new file mode 100644
index 0000000..e7df035
--- /dev/null
+++ b/lib/public/serializer.rb
@@ -0,0 +1,51 @@
+# typed: true
+
+module ResourceRegistry
+  class Serializer
+    extend T::Sig
+
+    # Maybe this should be a generic?
+    sig { params(resource: Resource).void }
+    def initialize(resource:)
+      @resource = resource
+    end
+
+    sig { params(entity: T::Struct, tags: T::Set[Symbol]).returns(T::Hash[Symbol, T.untyped]) }
+    def serialize(entity:, tags:)
+      entity_methods = Set.new(entity.methods)
+
+      resource_schema
+        .properties
+        .each_with_object({}) do |property, acc|
+          # If property has serialization groups and they are not included in the tags this property is skipped
+          next if property.serialization_groups.any? && (property.serialization_groups & tags).none?
+
+          property_value =
+            if entity_methods.include?(property.name.to_sym)
+              entity.send(property.name)
+            elsif property.resolvable && (property.resolver&.values&.size || 0) > 1
+              # Review all this mess with resolvers
+              property.resolver&.map { |_, value| entity.send(value) }&.join(' ')
+            else
+              next
+            end
+
+          acc[property.name.to_sym] = recursive_serialization(property_value)
+        end
+    end
+
+    private
+
+    sig { params(property_value: T.untyped).returns(T.untyped) }
+    def recursive_serialization(property_value)
+      return property_value.map { |pv| recursive_serialization(pv) } if property_value.is_a?(Array)
+
+      property_value.respond_to?(:serialize, false) ? property_value.serialize : property_value
+    end
+
+    sig { returns(SchemaRegistry::Schema) }
+    def resource_schema
+      @resource.schema
+    end
+  end
+end
diff --git a/sorbet/rbi/todo.rbi b/sorbet/rbi/todo.rbi
index 5b27742..17cba7e 100644
--- a/sorbet/rbi/todo.rbi
+++ b/sorbet/rbi/todo.rbi
@@ -4,7 +4,6 @@
 
 # typed: false
 
-module ::Employees::Repositories::Employees; end
 module ::Rails; end
 module ::Rails::Engine; end
 module ::Repositories::Base; end
@@ -23,7 +22,6 @@ module ResourceRegistry::Oas::ParameterMapper; end
 module ResourceRegistry::Oas::PayloadMapper; end
 module ResourceRegistry::OpenapiSpecificationGenerator::Oas::SchemaMapper; end
 module ResourceRegistry::Relationship::Rails; end
-module ResourceRegistry::Repositories::Base::Outcome; end
 module ResourceRegistry::Repositories::Base::Permissions::Target; end
 module ResourceRegistry::Repositories::Base::SerializationTags; end
 module ResourceRegistry::Repositories::OutputContexts::Filter; end
@@ -31,9 +29,7 @@ module ResourceRegistry::Repositories::OutputContexts::PaginateCursor; end
 module ResourceRegistry::Repositories::OutputContexts::PaginateOffset; end
 module ResourceRegistry::Repositories::OutputContexts::Sort; end
 module ResourceRegistry::Repositories::ReadOutputContext; end
-module ResourceRegistry::Repositories::ReadResult::Outcome; end
 module ResourceRegistry::Repositories::ReadResult::OutputContexts::PageInfoDto; end
-module ResourceRegistry::Serializer; end
 module ResourceRegistry::Tracer::Telemetry::Tracer; end
 module SchemaRegistry::GenerateFromStruct::ActionDispatch::Http::UploadedFile; end
 module T::CompatibilityPatches::RSpecCompatibility::MethodDoubleExtensions; end
diff --git a/spec/public/registry_spec.rb b/spec/public/registry_spec.rb
index 47fa5e7..5d5c76d 100644
--- a/spec/public/registry_spec.rb
+++ b/spec/public/registry_spec.rb
@@ -20,13 +20,12 @@
   end
   let(:resource) do
     ResourceRegistry::Resource.new(
-      repository_raw: Employees::Repositories::Employees.to_s,
+      repository_raw: DummyRepo.to_s,
       capabilities: {
         rest: ResourceRegistry::Capabilities::Rest.new,
         power_bi: ResourceRegistry::Capabilities::PowerBi.new
       },
-      verbs: {
-      },
+      verbs: {},
       schema: schema
     )
   end
@@ -50,7 +49,7 @@
 
   describe '#fetch_for_repository' do
     it do
-      expect(registry.fetch_for_repository(Employees::Repositories::Employees)).to(eq(resource))
+      expect(registry.fetch_for_repository(DummyRepo)).to(eq(resource))
     end
   end