Though its simple to create a HTTP client and make a reuest. But if you want to make use of some auto generated clients, You can make use of WADL to describe and generate code.
You can use RestDescribe to generate and compile WSDL, you can generate clients in php, ruby, python, java and C# using this. It generates clean code and there is a good change that you have to tweak it a bit after code generation, you can find good documentation and underlying thoughts behind the tool here.
There are few interesting and useful WADL tools mentioned on wintermute.
