Spree's Rest API add authentication API.
$ /api/users/sign_up.json
$ /api/users/sign_in.json
$ curl -v -H "Accept: application/json" -H "Content-type: application/json" -X POST -d ' {"user":{"email":"camelmasa@gmail.com", "password":"camelmasa", "password_confirmation":"camelmasa"}}' http://localhost:3000/api/users/sign_up.json
$ curl -v -H "Accept: application/json" -H "Content-type: application/json" -X POST -d ' {"user":{"email":"camelmasa@gmail.com", "password":"camelmasa"}}' http://localhost:3000/api/users/sign_in.json
Coding now.
Copyright (c) 2012 Masahiro Saito, released under the New BSD License