diff --git a/docs/jsonapi/schema.md b/docs/jsonapi/schema.md
index ba718ec0..586fd8cd 100644
--- a/docs/jsonapi/schema.md
+++ b/docs/jsonapi/schema.md
@@ -81,7 +81,7 @@ Example supported requests
 | linkage               | String(type), String(id), meta                                                                     | type, id | AMS::Adapter::JsonApi#primary_data_for
 | pagination            | pageObject(first), pageObject(last),<br>pageObject(prev), pageObject(next)                            |          | AMS::Adapter::JsonApi::PaginationLinks#serializable_hash
 | pagination.pageObject | oneOf(Uri, null)                                                                                   |          |
-| jsonapi               | String(version), meta                                                                              |          | AMS::Adapter::JsonApi::ApiObjects::JsonApi#as_json
+| jsonapi               | String(version), meta                                                                              |          | AMS::Adapter::JsonApi::Jsonapi#as_json
 | error                 | String(id), links, String(status),<br>String(code), String(title),<br>String(detail), error.source, meta |          | AM::S::ErrorSerializer, AMS::Adapter::JsonApi::Error.resource_errors
 | error.source          | String(pointer), String(parameter)                                                                 |          | AMS::Adapter::JsonApi::Error.error_source
 | pointer               | [JSON Pointer RFC6901](https://tools.ietf.org/html/rfc6901)                                        |          | AMS::JsonPointer
diff --git a/lib/active_model/serializer/configuration.rb b/lib/active_model/serializer/configuration.rb
index 94dc80e0..b347958c 100644
--- a/lib/active_model/serializer/configuration.rb
+++ b/lib/active_model/serializer/configuration.rb
@@ -21,6 +21,12 @@ module ActiveModel
 
         config.adapter = :attributes
         config.jsonapi_resource_type = :plural
+        config.jsonapi_version = '1.0'
+        config.jsonapi_toplevel_meta = {}
+        # Make JSON API top-level jsonapi member opt-in
+        # ref: http://jsonapi.org/format/#document-top-level
+        config.jsonapi_include_toplevel_object = false
+
         config.schema_path = 'test/support/schemas'
       end
     end
diff --git a/lib/active_model_serializers/adapter/json_api.rb b/lib/active_model_serializers/adapter/json_api.rb
index dfb387bf..f06a69e9 100644
--- a/lib/active_model_serializers/adapter/json_api.rb
+++ b/lib/active_model_serializers/adapter/json_api.rb
@@ -2,51 +2,16 @@ module ActiveModelSerializers
   module Adapter
     class JsonApi < Base
       extend ActiveSupport::Autoload
-      autoload :PaginationLinks
       autoload :FragmentCache
-      autoload :Link
-      autoload :Meta
+      autoload :Jsonapi
       autoload :ResourceIdentifier
       autoload :Relationship
+      autoload :Link
+      autoload :PaginationLinks
+      autoload :Meta
       autoload :Error
       autoload :Deserialization
 
-      # TODO: if we like this abstraction and other API objects to it,
-      # then extract to its own file and require it.
-      module ApiObjects
-        # {http://jsonapi.org/format/#document-jsonapi-object Jsonapi Object}
-        module Jsonapi
-          ActiveModelSerializers.config.jsonapi_version = '1.0'
-          ActiveModelSerializers.config.jsonapi_toplevel_meta = {}
-          # Make JSON API top-level jsonapi member opt-in
-          # ref: http://jsonapi.org/format/#document-top-level
-          ActiveModelSerializers.config.jsonapi_include_toplevel_object = false
-
-          module_function
-
-          def add!(hash)
-            hash.merge!(object) if include_object?
-          end
-
-          def include_object?
-            ActiveModelSerializers.config.jsonapi_include_toplevel_object
-          end
-
-          # TODO: see if we can cache this
-          def object
-            object = {
-              jsonapi: {
-                version: ActiveModelSerializers.config.jsonapi_version,
-                meta: ActiveModelSerializers.config.jsonapi_toplevel_meta
-              }
-            }
-            object[:jsonapi].reject! { |_, v| v.blank? }
-
-            object
-          end
-        end
-      end
-
       def initialize(serializer, options = {})
         super
         @include_tree = ActiveModel::Serializer::IncludeTree.from_include_args(options[:include])
@@ -74,7 +39,7 @@ module ActiveModelSerializers
         hash[:data] = is_collection ? primary_data : primary_data[0]
         hash[:included] = included if included.any?
 
-        ApiObjects::Jsonapi.add!(hash)
+        Jsonapi.add!(hash)
 
         if instance_options[:links]
           hash[:links] ||= {}
@@ -100,7 +65,7 @@ module ActiveModelSerializers
       def failure_document
         hash = {}
         # PR Please :)
-        # ApiObjects::Jsonapi.add!(hash)
+        # Jsonapi.add!(hash)
 
         if serializer.respond_to?(:each)
           hash[:errors] = serializer.flat_map do |error_serializer|
@@ -114,7 +79,7 @@ module ActiveModelSerializers
 
       def fragment_cache(cached_hash, non_cached_hash)
         root = false if instance_options.include?(:include)
-        ActiveModelSerializers::Adapter::JsonApi::FragmentCache.new.fragment_cache(root, cached_hash, non_cached_hash)
+        FragmentCache.new.fragment_cache(root, cached_hash, non_cached_hash)
       end
 
       protected
@@ -217,7 +182,7 @@ module ActiveModelSerializers
 
       # {http://jsonapi.org/format/#fetching-pagination Pagination Links}
       def pagination_links_for(serializer, options)
-        JsonApi::PaginationLinks.new(serializer.object, options[:serialization_context]).serializable_hash(options)
+        PaginationLinks.new(serializer.object, options[:serialization_context]).serializable_hash(options)
       end
 
       # {http://jsonapi.org/format/#document-meta Docment Meta}
diff --git a/lib/active_model_serializers/adapter/json_api/jsonapi.rb b/lib/active_model_serializers/adapter/json_api/jsonapi.rb
new file mode 100644
index 00000000..8df1ae96
--- /dev/null
+++ b/lib/active_model_serializers/adapter/json_api/jsonapi.rb
@@ -0,0 +1,31 @@
+module ActiveModelSerializers
+  module Adapter
+    class JsonApi < Base
+      # {http://jsonapi.org/format/#document-jsonapi-object Jsonapi Object}
+      module Jsonapi
+        module_function
+
+        def add!(hash)
+          hash.merge!(object) if include_object?
+        end
+
+        def include_object?
+          ActiveModelSerializers.config.jsonapi_include_toplevel_object
+        end
+
+        # TODO: see if we can cache this
+        def object
+          object = {
+            jsonapi: {
+              version: ActiveModelSerializers.config.jsonapi_version,
+              meta: ActiveModelSerializers.config.jsonapi_toplevel_meta
+            }
+          }
+          object[:jsonapi].reject! { |_, v| v.blank? }
+
+          object
+        end
+      end
+    end
+  end
+end