If the given site supports the JSON Keys protocol, you can work with it as a tree in Origami using the explore: protocol.
The Web Origami documentation site supports JSON Keys, so as a trivial example, you can get a list of the resources available at any route:
$ ori keys explore://weborigami.org/samples/greetings/
- Alice
- Bob
- Carol
Note: an explore: URL for a site area like this requires a trailing slash!
You can also copy such a site area locally:
$ ori copy explore://weborigami.org/samples/greetings/, files:snapshot
$ ls snapshot
Alice Bob Carol
$ cat snapshot/Alice
Hello, Alice.
$