diff --git a/README.rst b/README.rst
index 27f8a2c..6362a27 100644
--- a/README.rst
+++ b/README.rst
@@ -35,6 +35,27 @@ Alternatively you can download the code and install from the repository:
 
    $ pip install -e git+https://github.com/p1c2u/openapi-core.git#egg=openapi_core
 
+
+Usage
+=====
+
+Firstly create your specification:
+
+.. code-block:: python
+
+   from openapi_core import create_spec
+
+   spec = create_spec(spec_dict)
+
+Now you can use it to validate and unmarshal requests
+
+.. code-block:: python
+
+   from openapi_core import request_parameters_factory, request_body_factory
+
+   parameters = request_parameters_factory.create(request, spec)
+   body = request_body_factory.create(request, spec)
+
 Related projects
 ================
 * `openapi-spec-validator <https://github.com/p1c2u/openapi-spec-validator>`__
diff --git a/openapi_core/__init__.py b/openapi_core/__init__.py
index 5909c4a..235d5ed 100644
--- a/openapi_core/__init__.py
+++ b/openapi_core/__init__.py
@@ -1,5 +1,6 @@
 """OpenAPI core module"""
 from openapi_core.shortcuts import create_spec
+from openapi_core.wrappers import RequestParametersFactory, RequestBodyFactory
 
 __author__ = 'Artur Maciąg'
 __email__ = 'maciag.artur@gmail.com'
@@ -7,4 +8,7 @@ __version__ = '0.0.1'
 __url__ = 'https://github.com/p1c2u/openapi-core'
 __license__ = 'BSD 3-Clause License'
 
-__all__ = ['create_spec', ]
+__all__ = ['create_spec', 'request_parameters_factory', 'request_body_factory']
+
+request_parameters_factory = RequestParametersFactory()
+request_body_factory = RequestBodyFactory()