This small plugin includes support for RESTjQuery script. Once installed your site can use the RESTjQuery script.
A security key is set for you and will be needed to enable logged in users to access certain endpoints such as posting a new post.
To enable access you need to use the nonce parameter like so.
restjQuery({
nonce: restjquery_params.nonce
});
See the documentation for a guide on using RESTjQuery.