{
  "ok": true,
  "service": "feednews",
  "price_usd": "0.01",
  "free": [
    "/sources",
    "/health"
  ],
  "paid": [
    "/digest?sources=cat:ai,cat:security&q=openai&limit=25&since_hours=72"
  ],
  "note": "sources accepts category names (ai, tech, security, finance, science, world, dev), cat:<name>, or explicit http(s) RSS/Atom/JSON feed URLs, comma-separated."
}