OAuth is used by many online services (Twitter, Etsy are but two) to provide secure authentication for requests. The above scheme allows such authenticated requests in REBOL.
target: 'get ; http method
key: make key [
consumer-key: <a consumer key>
consumer-secret: <a consumer secret>
user: make user [
token: <a user key>
secret: <a user secret>
For a more comprehensive HTTP protocol geared toward REST transactions, see the REST Protocol.