from oauthost.toolbox import register_client

...

# Define some scopes to restrict our client to (if required).
my_scopes = ['polls:vote']

# `user` might be `request.user` if in a view.
register_client('My OAuth Client', 'my_client',
                'http://someurl.com/myclient/', user, scopes_list=my_scopes)

...

from oauthost.decorators import oauth_required

@oauth_required(scope_auto=True)
def vote(request, poll_id, variant_id):
    ...

from oauthost.urls import urlpatterns as oauthost_urlpatterns

urlpatterns = ...  # Your actual urlpatterns are ommited.

urlpatterns += oauthost_urlpatterns