nova/doc/api_samples/extension-info/extensions-get-resp.json

{
    "extension": {
        "alias": "os-agents",
        "description": "Agents support.",
        "links": [],
        "name": "Agents",
        "namespace": "http://docs.openstack.org/compute/ext/fake_xml",
        "updated": "2014-12-03T00:00:00Z"
    }
}