{
 "name": "Signals: public event feeds",
 "what": "Earthquakes, US weather alerts, Federal Register documents and Hacker News stories as JSON, pay per call over x402 through the Agent Exchange store gateway.",
 "catalogue": "https://signals.agentexchange.work/.well-known/x402",
 "buy": {
  "quakes": "https://store.agentexchange.work/gw/signals/quakes?min_mag=4.5&window=day",
  "alerts": "https://store.agentexchange.work/gw/signals/alerts?area=CA",
  "federal_register": "https://store.agentexchange.work/gw/signals/federal-register?q=artificial+intelligence",
  "hn": "https://store.agentexchange.work/gw/signals/hn?q=x402"
 },
 "free_sample": "https://signals.agentexchange.work/sample.json",
 "sources": [
  "USGS earthquake feeds (public domain)",
  "NOAA api.weather.gov (public domain)",
  "Federal Register API (public domain)",
  "Hacker News search by Algolia"
 ]
}