curl --request GET \
  --url https://agenticadvertising.org/api/registry/lookup/domain/{domain}

{
  "domain": "examplepub.com",
  "authorized_agents": [
    {
      "url": "<string>",
      "authorized_for": "<string>",
      "member": {
        "slug": "<string>",
        "display_name": "<string>"
      }
    }
  ],
  "sales_agents_claiming": [
    {
      "url": "<string>",
      "member": {
        "slug": "<string>",
        "display_name": "<string>"
      }
    }
  ]
}